The 7-speed preselective robotic transmission ZF 7DT-45, or Porsche PDK, has been produced since 2008 and is installed in popular models such as the Boxster, Cayman, and base 911 models. There are three different versions of this robotic transmission: 7DT45FL, 7DT45HL, and 7DT45HLA.
7DT family: 7DT-45, 7DT-70, 7DT-75.
Specifications
| Type | preselective robotic transmission |
| Number of gears | 7 |
| Type of drive | rear / all wheel |
| 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 |
| Partial replacement, liter | 5.2 + 3.2 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~300 000 km |
| Weight, kg | 112 |
Gear ratios ZF 7DT45
Using the 2014 Porsche Cayman with a 3.4-liter engine as an example:
| 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 |
Using
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) in 2016 – …;
- Porsche Cayman 1 (987) in 2008 – 2012; Cayman 2 (981) in 2012 – 2016; Cayman 3 (982) in 2016 – …
Disadvantages of the ZF 7DT45 gearbox
- In the early years, there were complaints about jerky shifting, but firmware updates fixed everything;
- Now the main problems are related to solenoid wear and contamination of the valve body;
- Secondly, sensor failures are common, especially for fluid pressure and temperature;
- Speed and gear position sensors in robotic transmissions also fail quite frequently;
- Overly active owners replace the clutch assembly at mileages under 50,000 km.
