Gearbox ZF 7DT-45

The 7-speed preselective robotic gearbox ZF 7DT-45 or Porsche PDK has been produced since 2008 and is installed on such popular models as the Boxster, Cayman and basic modifications of the 911. There are three different versions of this robotic gearbox: 7DT45FL, 7DT45HL, 7DT45HLA.

7DT family: 7DT-45, 7DT-70, 7DT-75.

Specifications

Production years since 2008
Type robotic transmission
Number of gears 7
Type of drive all wheel / rear
Engine volume, l up to 4.0
Torque output, Nm up to 500
Recommended oil Pentosin FFL-3 + PTX 75W-90
Oil capacity, liter 5.4 + 3.5
Replacing the oil every 60,000 km
Replacing the filter every 60,000 km
Gearbox lifespan, km ~300 000
Weight, kg 112

Gear ratios ZF 7DT-45

Using the example of a Porsche Cayman 2014 with a 3.4 liter engine:

Main 3.25
1st 3.91
2nd 2.29
3rd 1.65
4th 1.30
5th 1.08
6th 0.88
7th 0.62
Reverse 3.55

The transmission was installed on:

  • Porsche 911 VI (997) in 2008 – 2012; 911 VII (991) in 2011 – 2019;
  • Porsche Boxster 2 (987) in 2008 – 2012; Boxster 3 (981) in 2012 – 2016; Boxster 4 (982) since 2016;
  • Porsche Cayman 1 (987) in 2008 – 2012; Cayman 2 (981) in 2012 – 2016; Cayman 3 (982) since 2016.

Disadvantages of the ZF 7DT-45 gearbox

  • In the early years there were complaints about jerky switching, but the firmware corrected everything.
  • Now the main problems are related to wear of the solenoids and contamination of the valve body.
  • In second place are failures of sensors and especially fluid pressure and temperature.
  • Speed and gear position sensors also fail quite often.
  • Overly active owners change the clutch unit at mileages of less than 50,000 km.

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