Gearbox ZF 6HP28

The 6-speed automatic transmission ZF 6HP28 was produced by the concern from 2007 to 2014 and was installed on rear-wheel drive or all-wheel drive BMW models under the designations GA6HP28Z and GA6HP28X. A modification of such an automatic transmission for Audi is known as 0B6 or 6HP28A and has many differences.

6HP family: 6HP19, 6HP26, 6HP32, 6HP21, 6HP28.

Specifications

Production years 2007 – 2014
Type automatic transmission
Number of gears 6
Type of drive all wheel / rear
Engine volume, l up to 6.2
Torque output, Nm up to 700
Recommended oil ZF Lifeguard Fluid 6
Oil capacity, liter 9.5
Replacing the oil every 60,000 km
Replacing the filter every 60,000 km
Gearbox lifespan, km ~300 000
Weight, kg 90 (Audi 0B6 – 136)

Gear ratios ZF 6HP28

Using the example of a BMW 750i 2009 with a 4.4 liter engine:

Main 3.462
1st 4.171
2nd 2.340
3rd 1.521
4th 1.143
5th 0.867
6th 0.691
Reverse 3.403

The transmission was installed on:

  • Audi A4 B8 (8K) in 2007 – 2011;
  • Audi A5 1 (8T) in 2007 – 2011;
  • Audi Q5 1 (8R) in 2008 – 2012;
  • BMW 3-Series E90 in 2008 – 2013;
  • BMW 5-Series E60 in 2007 – 2010;
  • BMW 7-Series F01 in 2008 – 2012;
  • BMW X3-Series E83 in 2008 – 2010;
  • BMW X5-Series E70 in 2008 – 2013;
  • BMW X6-Series E71 in 2008 – 2014;
  • Jaguar XF 1 (X250) in 2009 – 2012;
  • Jaguar XK 2 (X150) in 2009 – 2014;
  • Jaguar XJ 8 (X351) in 2009 – 2013;
  • Land Rover Discovery 4 (L319) in 2009 – 2013;
  • Land Rover Range Rover 3 (L322) in 2009 – 2012;
  • Land Rover Range Rover Sport 1 (L320) in 2009 – 2013.

Disadvantages of the ZF 6HP28 gearbox

  • The main problems of the gearbox are related to the rapid wear of the torque converter lock-up clutch;
  • The solenoids of the valve body become clogged with wear products and the automatic transmission begins to push;
  • Ignoring shocks and vibrations leads to destruction of the oil pump bearing;
  • The weak points of automatic transmissions of this family include short-lived metal bushings;
  • Also, all rubber and plastic parts do not have the greatest resource.

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