8hp resources

use the images below to quickly jump to each section!

8hp change fluid, pan filter procedure jpeg.jpg

8hp fluid fill & break in procedure JPEG.jpg

WHich TRANSMISSION DO I HAVE?

The year, make and model of your vehicle will narrow down what potential transmissions you have but the Stamping/Engraving/Embossing on the rear section of the case will tell you EXACTLY what transmission you have!

You will be able to see this area with the transmission still in the vehicle but of course it will be much easier to read once the transmission is out of the vehicle!

If you are still unsure of your transmission model, send us a photo of the section shown as well as multiple angles of the complete transmission and we will help you identify exactly what you have.

the dIFFERENT 8hp vARIATIONS

BMW 8HP45 (Generation 1)

There are four different 8HP45 variants:

- 8HP45 from N55 engine

- 8HP45 from N20 engine

- 8HP45 from N13 engine

- 8HP45 from N47 engine

BMW 8HP45 : N55 F-series

The N55 8hp45 transmission has the N20/N55 bellhousing bolt pattern.

A smaller converter with a flat mounting face, fastened with 6x M10 bolts & 32mm guiding nose.

-It has 18.5mm oil cooler ports, uses a M8 mounting bolt for the oil cooler adapter.

-Output flange is 105.0mm PCD and insert size of 22mm.

BMW 8HP45 : N20 F-series

The N20 8hp45 transmission has the N20/N55 bellhousing bolt pattern.

This 8hp45 uses a smaller converter with a C-shaped mounting face, fastened with 6x M10 bolts & 32mm guiding nose.

-It has 18.5mm oil cooler ports, uses a M8 mounting bolt for the oil cooler adapter.

-Output flange is 105.0mm PCD and insert size of 22mm.

BMW 8HP45 : N13 F-series

The N13 8hp45 transmission has a unique bellhousing bolt pattern only available on N13 engine.

This 8hp45 uses a smaller converter with a flat mounting face, fastened with 4x M10 bolts & 16mm guiding nose.

-It has 18.5mm oil cooler ports, uses a M6 mounting bolt for the oil cooler adapter.

-Output flange is 96.0mm PCD and has a flat mounting surface (No insert size).

BMW 8HP45 : N47 F-series

The N47 8hp45 transmission has N47/B48/N57/B58/B57/S58 bolt pattern, which is normally referred to as “N57” bolt pattern.

This 8hp45 uses a smaller converter with a flat mounting face, fastened with 4x M10 bolts & 32mm guiding nose.

-It has 18.5mm oil cooler ports, uses a M6 mounting bolt for the oil cooler adapter.

-Output flange is 105.0mm PCD and insert size of 22mm.

BMW 8HP50/51 (Gen 2 / Gen 3)

Seven different 8HP50 / 51 Transmissions.

- 8HP50 from B37 engine F-series

- 8HP50 from B38 engine F-series

- 8HP50 from B47 engine F-series

- 8HP50 from B48 engine F-series

- 8HP50 from B58 engine F-series

- 8HP51 from B47 engine G-series

- 8HP51 from B58 engine G-series

All of the transmissions listed above share the same bellhousing pattern (N57 pattern).
This 8hp50/51 uses a converter with a flat mounting face, fastened with 6x M10 bolts & 32mm guiding nose.
The F-series variants use the same oil cooler ports size: 17.0mm and M6 thread size.
The G-series variants use larger oil cooler ports: 18.5mm and M6 thread size.

BMW 8HP70/75/76 Small Bellhousing (Gen 1 / Gen 2 / Gen 3)

Five different 8HP70 / 8HP75 / 8HP76 Transmissions with a small bellhousing pattern (N57).

- 8HP70 from N57 engine F-series

- 8HP75 from N57 engine F-series (X5 X6 AWD)

- 8HP75 from B57 engine G-series

- 8HP76 from B57 engine G-series

- 8HP76 from S58 engine G-series

All of the transmissions listed above share the same bellhousing pattern (N57 pattern).
This 8HP70/75/76 uses a converter with a flat mounting face, fastened with 6x M10 bolts & 32mm guiding nose.
Output flange is normally 105.0mm PCD with 22mm inserts for both F- and G-series.
The F-series variants use the same oil cooler ports size: 17.0mm and M6 thread size.
The G-series variants use larger oil cooler ports: 18.5mm and M6 thread size.

BMW 8HP70 / 75 Big Bellhousing (Gen 1 / Gen 2)

Two different 8HP70 / 75 Transmissions with big bellhousing pattern (N63)

- 8HP70 from N63 engine F-series

- 8HP75 from N63 engine G-series (AWD)

All of the transmissions listed above share the same bellhousing pattern (N63 pattern).
This 8HP70/75 uses a converter with a C-shaped mounting face, fastened with 6x M10 bolts & 32mm guiding nose.
8HP70 F-series has an output flange PCD of 110.0mm and 18.0mm insert size.
Larger oil cooler ports measuring 18.5mm and mounting thread size is M8.

BMW 8HP90 / 95 (Gen 1 / Gen 2)

Two different 8HP90 / 95 Transmissions

- 8HP90 from N74 engine F-series

- 8HP95 from N74 engine G-series (AWD)

All of the transmissions listed above share the same bellhousing pattern (N74 pattern).
This 8HP90/95 uses a converter with a C-shaped mounting face, fastened with 6x M10 bolts & 32mm guiding nose.
8HP90 F-series has an output flange PCD of 110.0mm and 18.0mm insert size.
Larger oil cooler ports measuring 18.5mm and mounting thread size is M8.

C6X STEELS

THE INDUSTRY LEADING STEELS MANUFACTURED BY PDS.

LEARN MORE ABOUT THE C6X STEELS!
FSR FRICTIONS

THE INDUSTRY LEADING FRICTIONS MANUFACTURED BY PDS.

LEARN MORE ABOUT THE FSR FRICTIONS!

8HP FIRST GENERATION

1st Generation of the 8HP Transmission: 8HP45, 8HP55, 8HP70, 8HP90.

ZF8HP45

The 8-speed automatic transmission ZF 8HP45 has been produced by the German concern since 2010 and is installed on a number of popular rear-wheel drive or all-wheel drive BMW models such as the GA8HP45Z. This transmission is also installed on Chrysler, Dodge and Jeep, but under its own designation 845RE.

Specifications

Production years: since 2010
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, L: up to 3.6
Torque output, Nm: up to 450 (500)
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 60,000 km
Replacing the filter: every 60,000 km
Gearbox lifespan, km: ~300,000
Weight, lbs.: 170

In 2010, the ZF concern introduced an 8-speed gearbox to replace the popular 6-speed automatic transmission 6HP21, designed for rear-wheel drive and all-wheel drive models with a longitudinal engine arrangement. Automatic transmissions were combined with gasoline units up to 450 Nm and diesel engines up to 500 Nm.

The design of 8-speed hydromechanical transmissions has changed in comparison with 6-speed ones, and the Lepelletier planetary gear system in this transmission has given way to a Simpson gearbox. The valve body is new, but it is also combined with the control unit into a single mechatronics unit. To save fuel, all modern automatic transmissions are equipped with a built-in Start-Stop system.

Gear Ratio Chart: ZF 8HP45

Using the example of a BMW 335i 2014 with a 3.0 liter engine:

Main: 3.154
1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

The Gen.1 8hp45 Transmission was installed on:

BMW: 1-Series F20 in 2011 – 2015; 2-Series F22 in 2013 – 2017; 3-Series F30 in 2011 – 2015; 4-Series F32 in 2013 – 2017; 5-Series F10 in 2010 – 2014; 6-Series F12 in 2011 – 2018; 7-Series F01 in 2012 – 2015; X1-Series E84 in 2011 – 2015; X3-Series F25 in 2010 – 2017; X4-Series F26 in 2014 – 2018; X5-Series E70 in 2010 – 2013; X5-Series F15 in 2013 – 2018; X6-Series E71 in 2010 – 2014; X6-Series F16 in 2014 – 2018; Z4-Series E89 in 2011 – 2016;
Chrysler: 300C 2 (LD) in 2011 – 2018;
Dodge: Challenger 3 (LC) in 2014 – 2018; Charger 2 (LD) in 2011 – 2018; Durango 3 (WD) in 2014 – 2017; Ram 4 (DS) in 2013 – 2018;
Jeep: Grand Cherokee 4 (WK2) in 2013 – 2017;
Jaguar: F-Pace 1 (X761) since 2016; XE 1 (X760) in 2015 – 2021;
Lancia: Thema II (LD) in 2011 – 2014;
Land Rover:Discovery 4 (L319) in 2013 – 2017; Discovery 5 (L462) since 2017;
Volkswagen: Amarok 1 (2H) since 2011.

Disadvantages of the ZF 8HP45 Transmission/Gearbox

Although this automatic transmission has a very durable torque converter locking clutch, with overly aggressive use it still wears out quite quickly and its wear products clog the valve body solenoids, and then the automatic transmission begins to push.
If you don’t pay attention to vibrations from a worn locking clutch for long, the oil pump bearing will break, and then the housing and you’ll have to replace the whole thing.
To save weight, many parts in such a transmission are made of aluminum, which does not support high loads and breakdowns in planetary gears are common.
As in the previous generation gearboxes, metal bushings and many rubber parts of the transmission require frequent replacement, or the lubricant pressure in the system will drop significantly.

ZF8HP55

The 8-speed automatic transmission ZF 8HP55 was produced by the concern from 2009 to 2018 and was installed on powerful Audi models under the symbol 0BK, sometimes it is designated 8HP55A and 8HP55AF. There is a version of this gearbox for hybrid cars with the index 0BW or 8HP55AH.

Specifications

Production years: 2009 – 2018
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel
Engine volume, l: up to 4.2
Torque output, Nm: up to 700
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 9.0
Replacing the oil: every 60,000 km
Replacing the filter: every 60,000 km
Gearbox lifespan, km: ~300,000
Weight, lbs.:310

Gear Ratio Chart: ZF 8HP55

Using the example of a Audi A6 Quattro 2012 with a 3.0 TDi engine:

Main: 2.375
1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

The Gen.1 8hp55 Transmission was installed on:

Audi A4 B8 (8K) in 2011 – 2015;
Audi A5 1 (8T) in 2011 – 2016;
Audi A6 C7 (4G) in 2011 – 2018;
Audi A7 C7 (4G) in 2011 – 2018;
Audi A8 D4 (4H) in 2009 – 2017;
Audi Q5 1 (8R) in 2012 – 2017.

Disadvantages of the ZF 8HP55 Transmission/Gearbox

This is a very reliable gearbox, but is often coupled with particularly powerful engines.
When driving aggressively, the solenoids quickly become clogged with friction wear products.
Vibrations from burnt clutches gradually break down the oil pump bearings.
Aluminum pistons and drums do not withstand constant sudden acceleration from a standstill.
Bushings and rubber gaskets in all automatic transmissions in the line require regular updating.

ZF8HP70

The 8-speed automatic transmission ZF 8HP70 has been produced by the German company since 2009 and is installed on rear or all-wheel drive BMW models under the indexes GA8HP70Z and GA8HP70X. This automatic transmission is also installed on Jaguar and Land Rover, as well as Chrysler, Dodge and Jeep as the 870RE.

Specifications

Production years: since 2009
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, l: up to 5.5
Torque output, Nm: up to 700
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 60,000 km
Replacing the filter: every 60,000 km
Gearbox lifespan, km: ~300,000
Weight, lbs.: 192

In 2009, the German company ZF introduced an 8-speed automatic transmission to replace the 6-speed automatic transmission 6HP26, which was intended for rear-wheel drive and all-wheel drive cars with a longitudinal engine. This automatic transmission is installed with powerful V6 and V8 engines, as well as diesel engines with torque up to 700 Nm.

Compared to the old 6-speed gearboxes, the design of the mechanical part has changed and instead of the Lepelletier planetary gear system, a so-called Simpson gearbox has appeared. Also, according to modern tradition, this automatic transmission is equipped with a built-in Start-Stop system. The valve body is new here, but as before, it is combined with the control unit into a single mechatronics unit.

Gear Ratio Chart: ZF 8HP70

Using the example of a BMW 550i 2015 with a 4.4 liter engine:

Main: 2.813
1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

The Gen.1 8hp70 Transmission was installed on:

Aston Martin: Rapide 1 in 2014 – 2020; Vanquish 2 in 2014 – 2018;
BMW: 3-Series F30 in 2012 – 2018; 4-Series F32 in 2013 – 2020; 5-Series F07 in 2009 – 2017; 5-Series F10 in 2010 – 2017; 6-Series F12 in 2011 – 2018; 7-Series F01 in 2009 – 2015; X3-Series F25 in 2011 – 2017; X4-Series F26 in 2014 – 2018; X5-Series E70 in 2010 – 2013; X5-Series F15 in 2013 – 2018; X6-Series E71 in 2010 – 2014; X6-Series F16 in 2014 – 2019;
Chrysler: 300C 2 (LD) since 2014;
Dodge: Challenger 3 (LC) since 2014; Charger 2 (LD) since 2014; Durango 3 (WD) since 2014;
Great Wall: Poer 1 (P06) since 2019;
Haval: H8 I in 2017 – 2018; H9 I since 2017;
Jeep: Grand Cherokee 4 (WK2) in 2013 – 2016;
Jaguar: F-Type 1 (X152) since 2013; F-Pace 1 (X761) since 2016; XE 1 (X760) since 2015; XJ 8 (X351) in 2012 – 2019; XF 1 (X250) in 2011 – 2015; XF 2 (X260) since 2015;
Land Rover: Discovery 4 (L319) in 2012 – 2017; Discovery 5 (L462) since 2017; Range Rover 4 (L405) in 2012 – 2021; Range Rover Sport 2 (L494) since 2013; Velar 1 (L560) since 2017;
Maserati: Ghibli 1 (M157) since 2013; Levante 1 (M161) since 2016; Quattroporte 6 (M156) since 2013;
Rolls-Royce: Phantom 7 (RR1) in 2012 – 2017; Phantom 7 Drophead (RR2) in 2012 – 2017; Phantom 7 Coupe (RR3) in 2012 – 2017;
Volkswagen: Amarok 1 (2H) since 2016.

Disadvantages of the ZF 8HP70 Transmission/Gearbox

This is a reliable and durable automatic transmission, it is installed on very powerful cars, and their owners are prone to overly aggressive driving, which is why the torque converter lock-up clutch quickly wears out, the solenoids become clogged with this dirt, and the gearbox begins to push.
Severe wear of the torque converter locking clutch leads to vibration of the shaft and destruction of the oil pump bearing, and then complete damage to its housing.
There are a lot of aluminum parts in this gearbox and they cannot withstand high loads, so with very active use, burst pistons or drums are not uncommon.
A known weak point of automatic transmissions of this line are short-lived bushings and oil seals, which quickly wear out, which leads to a drop in lubricant pressure in the system

ZF8HP90

The 8-speed automatic transmission ZF 8HP90 has been produced by the German concern since 2009 and is installed on particularly powerful BMW and Rolls-Royce models under its GA8HP90Z index. The modification of this gearbox for Audi A8, RS6, RS7 has many differences and is known as 0BL.

Specifications

Production years: since 2009
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, l: up to 6.4
Torque output, Nm: up to 1000
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 50,000 km
Replacing the filter: every 50,000 km
Gearbox lifespan, km: ~250,000
Weight, lbs.: 207 (321 – Audi 0BL modification)

Gear Ratio Chart: ZF 8HP90

Using the example of a BMW 760Li 2014 with a 6.0 liter engine:

Main: 2.813
1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

The Gen.1 8hp90 Transmission was installed on:

Audi A6 C7 (4G) in 2013 – 2018;
Audi A7 C7 (4G) in 2013 – 2018;
Audi A8 D4 (4H) in 2009 – 2017;
Bentley Continental GT 2 (3W) in 2011 – 2018;
Bentley Flying Spur 2 (4W) in 2013 – 2019;
Bentley Mulsanne 1 (3Y) in 2010 – 2020;
BMW 7-Series F01 in 2009 – 2015;
Dodge Challenger 3 (LC) since 2014;
Dodge Charger 2 (LD) since 2014;
Rolls-Royce Dawn 1 (RR6) in 2015 – 2022;
Rolls-Royce Ghost 1 (RR4) in 2009 – 2020;
Rolls-Royce Wraith 1 (RR5) in 2013 – 2022.

Disadvantages of the ZF 8HP90 Transmission/Gearbox

This is a reliable and durable automatic transmission, but it comes with very powerful engines.
With aggressive driving, the solenoids quickly become clogged with friction wear products.
Wear of the torque converter clutches causes vibration and destruction of the oil pump bearing.
With frequent acceleration, the aluminum parts of the mechanical part of the gearbox cannot withstand.
Another weak point of the automatic transmission of this line is the rubber gaskets and bushings.

8HP SECOND GENERATION

2nd Generation of the 8HP Transmission: 8HP50, 8HP65, 8HP75, 8HP95.

ZF8HP50

The ZF 8HP50 8-speed automatic transmission has been assembled at a plant in Germany since 2014 and is installed on rear-wheel drive BMW models as the GA8HP50Z and all-wheel drive as the GA8HP50X. This gearbox is also installed on Chrysler, Dodge and Jeep under its own designation 850RE.

Specifications

Production years: since 2014
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, l: up to 3.6
Torque output, Nm: up to 500
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 60,000 km
Replacing the filter: every 60,000 km
Gearbox lifespan, km: ~300,000
Weight, lbs.: 167

Gear Ratio Chart: ZF 8HP50

Using the example of a BMW 1-Series 2017 with a 2.0 liter engine:

Main: 2.813
1st: 5.000
2nd: 3.200
3rd: 2.143
4th: 1.720
5th: 1.314
6th: 1.000
7th: 0.822
8th: 0.640
Reverse: 3.456

The Gen.2 8hp50 Transmission was installed on:

Alfa Romeo Giulia I (Type 952) since 2015;
Alfa Romeo Stelvio I (Type 949) since 2016;
BMW 1-Series F20 in 2014 – 2019;
BMW 2-Series F22 in 2014 – 2021;
BMW 3-Series F30 in 2015 – 2019;
BMW 4-Series F32 in 2015 – 2021;
BMW 5-Series F10 in 2014 – 2017; 5-Series G30 in 2017 – 2020;
BMW 6-Series G32 in 2017 – 2020;
BMW 7-Series G11 in 2015 – 2019;
BMW X3-Series G01 in 2017 – 2021;
BMW X4-Series G02 in 2018 – 2021;
BMW X5-Series F15 in 2015 – 2018;
BMW X6-Series F16 in 2015 – 2018;
Chrysler 300C 2 (LD) since 2018;
Dodge Challenger 3 (LC) since 2018;
Dodge Charger 2 (LD) since 2018;
Dodge Durango 3 (WD) since 2017;
Great Wall Poer 1 (P06) since 2019;
Jeep Grand Cherokee 4 (WK2) in 2017 – 2021; Grand Cherokee 5 (WL) since 2021;
Jeep Gladiator 2 (JT) since 2019;
Jeep Wrangler 4 (JL) since 2017;
Maserati Grecale 1 (M182) since 2022;
Tank 300 I since 2021.

Disadvantages of the ZF 8HP50 Transmission/Gearbox

The main problem is clogging of the solenoids with friction wear products.
Due to dirt-clogged solenoids, oil pressure decreases and the gearbox begins to push.
If you do not pay attention to the vibrations of the automatic transmission, the oil pump bearing will break.
During aggressive driving, aluminum drums often fail and burst.
The weak point of the gearbox is the bushings and rubber gaskets.

ZF8HP65

The 8-speed automatic transmission ZF 8HP65 has been produced by the German concern since 2015 and is installed on powerful Audi and Porsche models under the symbol 0D5, sometimes it is designated 8HP65A. There is a modification of this gearbox for hybrid cars with its own index 0D7.

Specifications

Production years: since 2015
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel
Engine volume, l: up to 4.0
Torque output, Nm: up to 700
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 9.2
Replacing the oil: every 50,000 km
Replacing the filter: every 50,000 km
Gearbox lifespan, km: ~250,000
Weight, lbs.: 310

Gear Ratio Chart: ZF 8HP65

Using the example of a Audi Q7 2017 with a 3.0 TDi engine:

Main: 2.848
1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

The Gen.2 8hp65 Transmission was installed on:

Audi A4 B9 (8W) since 2015;
Audi A5 2 (F5) since 2016;
Audi A6 C8 (4K) since 2018;
Audi A7 C8 (4K) since 2018;
Audi A8 D5 (4N) since 2017;
Audi Q5 2 (FY) since 2017;
Audi Q7 2 (4M) since 2015;
Audi Q8 1 (4M) since 2018;
Porsche Cayenne 3 (9YA) since 2017;
Porsche Cayenne 3 Coupe (9YB) since 2019;
Volkswagen Touareg 3 (CR) since 2018.

Disadvantages of the ZF 8HP65 Transmission/Gearbox

This is a reliable and durable gearbox, but it is often installed with very powerful engines.
With frequent and sudden acceleration, the solenoids become clogged with friction wear products.
Burnt clutches cause vibrations, and they break the oil pump bearing.
Aluminum pistons and drums often do not withstand overly aggressive driving.
All automatic transmissions in this line require regular updating of bushings and rubber gaskets.

ZF8HP75

The 8-speed automatic transmission ZF 8HP75 has been assembled at a plant in Germany since 2015 and is installed on all-wheel drive BMW models as GA8HP75X or rear-wheel drive as GA8HP75Z. This gearbox is also installed on Alfa Romeo, Aston Martin, as well as Jeep under the symbol 875RE.

Specifications

Production years: since 2015
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, l: up to 6.2
Torque output, Nm: up to 750
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 50,000 km
Replacing the filter: every 50,000 km
Gearbox lifespan, km: ~250,000
Weight, lbs.: 194

Gear Ratio Chart: ZF 8HP75

Using the example of a BMW X5 M50d 2017 with a 3.0 diesel engine:

Main: 3.154
1st: 4.714
2nd: 3.143
3rd: 2.106
4th: 1.667
5th: 1.285
6th: 1.000
7th: 0.839
8th: 0.667
Reverse: 3.317

The Gen.2 8hp75 Transmission was installed on:

Alfa Romeo Giulia I (Type 952) since 2015;
Alfa Romeo Stelvio I (Type 949) since 2016;
Aston Martin DB11 1 (AM5) since 2016;
Aston Martin Vantage 3 (AM6) since 2018;
BMW 5-Series G30 in 2017 – 2020;
BMW 7-Series G11 in 2015 – 2019;
BMW X3-Series G01 in 2017 – 2021;
BMW X4-Series G02 in 2018 – 2021;
BMW X5-Series F15 in 2015 – 2018;
BMW X6-Series F16 in 2015 – 2019;
Dodge Ram 5 (DT) since 2019;
Jeep Grand Cherokee 4 (WK2) in 2016 – 2021; Grand Cherokee 5 (WL) since 2021;
Jeep Gladiator 2 (JT) since 2019;
Jeep Wrangler 4 (JL) since 2019;
Maserati Grecale 1 (M182) since 2022.

Disadvantages of the ZF 8HP75 Transmission/Gearbox

This is a reliable automatic transmission but service life is greatly reduced by aggressive driving.
As always, the main problem is contamination of the solenoids with wear products.
Dirty Valve Body passages clog the valve body valves and shocks appear when switching gears.
With frequent acceleration, the aluminum parts of the mechanical part of the gearbox cannot withstand.
Known weak automatic transmissions of this family are bushings and rubber gaskets.

ZF8HP95

The 8-speed automatic transmission ZF 8HP95 has been produced by the German company since 2015 and is installed on particularly powerful BMW and Rolls-Royce models under its own index GA8HP95Z. The version of this automatic transmission for the Audi RS6, SQ7 and Bentley Bentayga has many differences and is known as 0D6.

Specifications

Production years: since 2015

Type: automatic transmission

Number of gears: 8

Type of drive: all wheel / rear

Engine volume, l: up to 6.6

Torque output, Nm: up to 1100

Recommended oil: ZF Lifeguard Fluid 8

Oil capacity, liter: 8.8

Replacing the oil: every 50,000 km

Replacing the filter: every 50,000 km

Gearbox lifespan, km: ~250,000

Weight, lbs.: 209 (Audi 0D6 modification – 330)

Gear Ratio Chart: ZF 8HP95

Using the example of a BMW M760Li xDrive 2020 with a 6.6 liter engine:

Main: 2.813

1st: 5.000

2nd: 3.200

3rd: 2.143

4th: 1.720

5th: 1.314

6th: 1.000

7th: 0.822

8th: 0.640

Reverse: 3.456

The Gen.2 8hp95 Transmission was installed on:

Aston Martin DBS 1 (AM7) since 2018;
Audi A6 C8 (4K) since 2019;
Audi A7 C8 (4K) since 2019;
Audi A8 D5 (4N) since 2019;
Audi Q7 2 (4M) in 2016 – 2020;
Audi Q8 1 (4M) in 2019 – 2020;
Bentley Bentayga 1 (4V) since 2016;
BMW 7-Series G11 since 2016;
Dodge Durango 3 (WD) in 2020 – 2021;
Dodge Ram 5 (DT) since 2019;
Jeep Grand Cherokee 4 (WK2) in 2017 – 2021;
Lamborghini Urus 1 since 2018;
Rolls-Royce Cullinan 1 (RR31) since 2018;
Rolls-Royce Dawn 1 (RR6) in 2016 – 2022;
Rolls-Royce Ghost 2 (RR21) since 2020;
Rolls-Royce Phantom 8 (RR11) since 2017;
Rolls-Royce Wraith 1 (RR5) in 2016 – 2022;
Rolls-Royce Touareg 3 (CR) in 2019 – 2020.

Disadvantages of the ZF 8HP95 Transmission/Gearbox

This reliable and durable gearbox has to work with very powerful engines.
During aggressive driving, the solenoids will quickly become clogged with friction wear products.
Worn clutches cause vibrations and break the oil pump bearing.
Frequent acceleration can cause aluminum parts in the mechanical part of the automatic transmission to burst.
The weak points of all gearboxes in this series are rubber gaskets and bushings.

8HP THIRD GENERATION

3rd Generation of the 8HP Transmission: 8HP51, 8HP76.

ZF8HP51

The 8-speed automatic transmission ZF 8HP51 has been produced by the German concern since 2018 and is installed on all-wheel drive BMW models as GA8HP51X and rear-wheel drive as GA8HP51Z. This gearbox is installed on the restyled version of the first generation Jaguar XE sedans.

Specifications

Production years: since 2018
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, l: up to 3.0
Torque output, Nm: up to 560
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 60,000 km
Replacing the filter: every 60,000 km
Gearbox lifespan, km: ~300,000
Weight, lbs.: 170

Gear Ratio Chart: ZF 8HP51

Using the example of a BMW 330i 2020 with a 2.0 liter engine:

Main: 2.813
1st: 5.250
2nd: 3.360
3rd: 2.172
4th: 1.720
5th: 1.316
6th: 1.000
7th: 0.822
8th: 0.640
Reverse: 3.712

The Gen.3 8hp51 Transmission was installed on:

BMW 2-Series G42 since 2021;
BMW 3-Series G20 since 2018;
BMW 4-Series G22 since 2020;
BMW 4-Series G26 since 2021;
BMW 5-Series G30 since 2020;
BMW 6-Series G32 since 2020;
BMW 7-Series G11 since 2019;
BMW 8-Series G15 since 2018;
BMW X3-Series G01 since 2021;
BMW X4-Series G02 since 2021;
BMW X5-Series G05 since 2018;
BMW X6-Series G06 since 2019;
BMW X7-Series G07 since 2019;
BMW Z4-Series G29 since 2018;
Jaguar XE 1 (X760) since 2019;
Toyota Supra MKV (A90) since 2019.

Disadvantages of the ZF 8HP51 Transmission/Gearbox

There are already cases of destruction of the spring torsional vibration damper.
Also, when driving too aggressively, aluminum pistons and drums can burst.
The remaining problems here are related to contamination of the solenoids with wear products.
As before, the weakest point of the automatic transmission is the bushings and rubber gaskets.

ZF8HP76

The 8-speed automatic transmission ZF 8HP76 has been produced by the German company since 2018 and is installed on rear- and all-wheel drive BMW models under its index GA8HP76X and GA8X76AZ. This gearbox is also installed on the most powerful versions of the Land Rover Defender in the L663 body.

Specifications

Production years: since 2018
Type: automatic transmission
Number of gears: 8
Type of drive: all wheel / rear
Engine volume, l: up to 4.8
Torque output, Nm: up to 800
Recommended oil: ZF Lifeguard Fluid 8
Oil capacity, liter: 8.8
Replacing the oil: every 50,000 km
Replacing the filter: every 50,000 km
Gearbox lifespan, km: ~250,000
Weight, lbs.: 192

Gear Ratio Chart: ZF 8HP76

Using the example of a BMW X7 xDrive40d 2020 with a 3.0 liter engine:

Main: 3.154
1st: 5.500
2nd: 3.520
3rd: 2.200
4th: 1.720
5th: 1.317
6th: 1.000
7th: 0.826
8th: 0.640
Reverse: 3.593

The Gen.3 8hp76 Transmission was installed on:

BMW 3-Series G20 since 2019;
BMW 4-Series G22 since 2021;
BMW 5-Series G30 since 2020;
BMW 6-Series G32 since 2020;
BMW 7-Series G11 since 2019;
BMW 8-Series G15 since 2018;
BMW X3-Series G01 since 2019;
BMW X4-Series G02 since 2019;
BMW X5-Series G05 since 2018;
BMW X6-Series G06 since 2019;
BMW X7-Series G07 since 2019;
Land Rover Defender 2 (L663) since 2019.

Disadvantages of the ZF 8HP76 Transmission/Gearbox

As before, the service life of your gearbox will greatly depend on the operating mode.
During active driving, the solenoids quickly become clogged with friction wear products.
Frequent acceleration causes the aluminum parts of the mechanical part of the gearbox to burst.
The weakest point of the automatic transmission is the bushings and rubber gaskets.

8HPXX ADAPTATION

TRANSMISSION CONTROL MODULE (TCM) ADAPTATION

The TCM or Transmission Control Module Assembly (TCMA) controls the fluid pressure and fill time of each clutch pack to give optimal shift quality. As the clutches wear, the TCM or TCMA will adapt and make adjustments to keep the shift quality consistent over the life of the vehicle. The initial clutch filling pressure and fill times are set at the factory. When a transmission assembly or transmission component is replaced, or when the adaptation values are reset, the adaptation values must be relearned. This procedure should also be followed when it is suspected that a vehicle has not been driven in a manner that encourages clutch adaptation learning in highway or city driving conditions.

NOTE: The scan tool, for many 8-Speed Transmissions now has a QUICK LEARN or STATIC ADAPTATION (STADA) routine that should be performed if the customer has any shift quality concerns or after any internal repairs are performed on the transmission. If the QUICK LEARN or STATIC ADAPTATION routine is not available on the scan tool for the application you are working on or the shift quality concern is not corrected by performing the QUICK LEARN or STATIC ADAPTATION routine then the TCM ADAPTATION PROCEDURES below need to be performed.

QUICK LEARN PROCEDURE

NOTE: 2015 model year vehicles equipped with the 845RE (Sales Code DFL) already contain software in the TCM to enable the Quick Learn procedure. However, 2014 model year vehicles with the 845RE require the Transmission Control Module to be updated to the latest software.

NOTE: The scan tool software must be at the newest revision to perform this procedure

NOTE: Quick Learn Procedure requires the transmission fluid temperature is at least 55°C (131°F).

Drive the vehicle briefly to ensure all clutches have been engaged at least twice. Keep the engine running throughout the remainder of this procedure.
With the scan tool, activate the RESET ADAPTIVE VALUES routine.
With the scan tool, activate the QUICK LEARN routine and follow the on-screen instructions. This procedure requires about 2-5 minutes to complete.

TCM ADAPTATION PROCEDURES

The two procedures to relearn these values are called Fast Filling Adaptation and Standard Clutch Filling Adaptation. Depending on the repair or complaint, one or both procedures must be performed as described below.

NOTE: Performing a reset of the Transmission Adaptation values does not automatically trigger the TCM to relearn the Adaptation values. If a reset is performed, both procedures must be performed to restore optimal shift quality. Do not reset these values unless specifically instructed to do so.

NOTE: This procedure does not need to be performed if the existing TCM or TCMA is re-flashed and that was the only repair performed.

One or both TCM Adaptation procedures should be performed depending on the situation. Failure to perform these procedures when required could cause shift quality issues.

FAST FILLING ADAPTATION PROCEDURE (8 STEPS)

Perform the following procedure when the TCM or TCMA, or Transmission assembly (with TCMA) has been replaced, or when the adaptation values have been reset. This procedure should be performed before performing the Standard Clutch Filling Adaptation Procedure when these components are replaced.

NOTE: Perform this procedure on a smooth road surface. The TCM or TCMA will abort the adaptation process if it senses rough road conditions. The road should be clear of traffic due to the start, stop, and slow vehicle speeds required during this procedure.

With the Scan Tool, erase Diagnostic Trouble Codes (DTCs).
Setup the scan tool to display the Transmission Oil Temperature, Torque, Turbine (Input) Speed Sensor rpm, and Clutch 'X' - Filling Counter for each clutch.
Drive the vehicle until the Transmission Oil Temperature is above 30° C (86° F).
Stop the vehicle.
Drive the vehicle to perform upshifts for all gears under the following conditions:

Light to medium throttle position
Turbine (Input) Speed between 1,250 - 2,000 rpm
Torque between 100 N⋅m and 150 N⋅m (74 ft. lbs. and 111 ft. lbs.)

6. Release the throttle (0% position) to coast and allow a 6-5 down-shift.

7. Perform steps 4-6 until the Filling Counters for each clutch displays 10 counts.

The tables below may be used as an alternate reference for the optimal conditions required to learn the Fast Filling Adaptations.

FAST FILLING ADAPTATION CONDITIONS CHART

CLUTCH VS SHIFT CHART

8. Perform the Standard Clutch Filling Adaptation Procedure.

STANDARD CLUTCH FILLING ADAPTATION PROCEDURE (9 STEPS)

Perform the following procedure when a Transmission internal component, Torque Converter, TCM or TCMA, or Transmission has been replaced, or when the adaptation values have been reset. This procedure should also be performed if it is suspected that the vehicle has not been driven in a manner that encourages clutch adaptation learning in highway or city driving conditions.

NOTE: The TCM learns the Standard Clutch Filling Adaptation values when the applicable clutch is not applied.

1. With the Scan Tool, erase DTCs.
2. Setup the scan tool to display the Transmission Oil Temperature, Torque, Turbine (Input) Speed Sensor rpm, and Clutch 'X' - Fast Filling Counter for each clutch.
3. Drive the vehicle until the Transmission Oil Temperature is above 50° C (122° F).

NOTE: Adaptation learning will be aborted if the Transmission Oil Temperature is above 100° C (212°F).
4. Stop the vehicle.
5. Drive the vehicle using the paddle shifters or Gear +/- buttons on the steering wheel in order to hold the transmission in the desired gear.

NOTE: First and second gears do not require a Standard Clutch Filling Adaptation procedure.

NOTE: If attempting to resolve a specific shift quality issue, use the Gear vs Clutch Table below to see which clutches require further adaptation. For instance, if a rough 2-1 downshift is noted, note that clutch C and clutch E are applying and releasing. Then use the Clutch vs Shift Table above to note that clutch C and clutch E require the adaptation procedure performed in 4th and 7th gear.

6. In 3rd gear, drive the vehicle within the following conditions until the Clutch D - Fast Filling Counter increments by one count:

Vehicle speed between 32-56 km/h (20-35 mph)
Turbine (Input) speed between 950 - 1750 rpm
Torque between 25 N⋅m - 180 N⋅m (18 ft. lbs. - 133 ft. lbs.)

7. In fourth gear, drive the vehicle within the following conditions until the Clutch C - Fast Filling Counter increments by one count:

Vehicle speed between 32-56 km/h (20-35 mph)
Turbine (Input) speed between 950 - 1750 rpm
Torque between 25 N⋅m - 120 N⋅m (18 ft. lbs. - 89ft. lbs.)

NOTE: Fifth gear does not require a Standard Clutch Filling Adaptation procedure.

8. In sixth gear, drive the vehicle within the following conditions until the Clutch A - Fast Filling Counter increments by one count:

Vehicle speed between 73-81 km/h (45-50 mph)
Turbine (Input) speed between 950 - 1750 rpm
Torque between 50 N⋅m - 120 N⋅m (37 ft. lbs. - 89ft. lbs.)

9. In seventh gear, drive the vehicle within the following conditions until the Clutch B- Filling Counter and Clutch E Fast Filling Counter each increment by one count:

Vehicle speed between 73-81 km/h (45-50 mph)
Turbine (Input) speed between 950-1750 rpm
Torque between 50 N⋅m-120 N⋅m (37 ft. lbs.-89ft. lbs.)

The Standard Clutch Filling Adaptation Conditions Table below may be used as an alternate reference for the optimal conditions required to learn the Standard Clutch Filling Adaptations.

STANDARD CLUTCH FILLING ADAPTATION CONDITIONS TABLE

10. Perform steps 4-9 until the Fast Filling Counters for each clutch has incriminated by at least five counts.
11. Evaluate shift performance for all gears. If the shift quality for any gear is insufficient, execute the appropriate driving conditions until shift quality improves. Incrementing the Fast Filling Counters by 12 counts for each clutch may be necessary to properly learn the adaptation values.

The following table Controller Area Network (CAN) be used to determine which clutches are involved in a specific up-shift or down-shift quality issue. 'X' indicates when a clutch is applied. The Standard Clutch Filling Adaptation learning occurs when the applicable clutch is not applied and the transmission is in a steady state (not shifting).

GEAR VS CLUTCH TABLE

READING CLUTCH ADAPTATION DATA

The Clutch Packs will each have 4 scan tool data labels to observe under the TCM section. Using Clutch A as an example, the data labels are:

CLUTCH A- FAST FILLING COUNTER: This data label displays the number of Clutch Filling Pressure adaptations that have been performed. These adaptations are the first learned values on a new transmission or after clutch adaptation values are reset. You will need to allow 5 to 12 fast filling counts per clutch to properly learn the clutch adaptations. If the shift quality is sufficient after 5 counts, no further adaptation learning procedures for that clutch are necessary.
CLUTCH A- FILLING COUNTER: This data label displays the number of Clutch Filling Time adaptations that have been performed. You will need to allow 5 to 12 filling counts per clutch to properly learn the clutch adaptations. If the shift quality is sufficient after 5 counts, no further adaptation learning procedures for that clutch are necessary.
CLUTCH A- FILLING PRESSURE: This data label displays the clutch filling pressure value that is learned during the TCM Adaptation procedure. The TCM adaptation software will increase or decrease the clutch fluid filling pressure to improve shift performance. The clutch Filling Pressure value will change over the life of the transmission based first on initial transmission build variation and then due to normal clutch wear.
CLUTCH A- FILLING TIME: This data label displays the clutch filling time value that is learned during the TCM Adaptation procedure. The TCM adaptation software will increase or decrease the Clutch Filling Time to improve shift performance. The clutch Filling Time value will change over the life of the transmission based first on initial transmission build variation and then due to normal clutch wear.

VIDEOS

Want to learn more about transmissions, servicing them, upgrading and more, check out these awesome and informative videos from FCP EURO!

The ZF 8-Speed transmission, known as the 8HP45, is a revolutionary automatic transmission. While we show it commonly in many different BMWs such as this F30, the ZF 8HP can be found in vehicles from over 21 different manufacturers worldwide. In this guide, Gareth Foley, FCP Euro's BMW Catalog Manager, covers: ZF 8-Speed Applications & Manufacturers ZF 8-Speed Service Intervals ZF 8-Speed Component Overview ZF 8-Speed Common Problems & Leaks

The ZF 8HP Automatic Transmission, or 8HP45, is used by manufacturers all across the automotive industry. In fact, there are over 21 different manufactures that have used this transmission. The ZF 8-Speed transmission is a workhorse and is very reliable; however, almost none of the manufacturers have a recommended service interval, despite ZF recommending that it be serviced every 8 years or 80,000 kilometers (50,000 miles).