When the 997 Turbo debuted in 2006, Porsche stated the spark plugs should be changed every 40,000 miles, where some service technicians told their clients as far as 60,000+ miles. We have found over the years that the 997 Turbo, especially when modified, should probably have the spark plugs changed every 15,000 to 20,000 miles, depending on usage.
Changing the plugs is not an easy job - it can take an amateur technician 4-hours or longer. And "while in there", a pesky pair of sensors can easily be accessed that also tend to fail around 40,000 miles: the camshaft position sensors.
There's no set interval we're aware of on these sensors, but since it's a big job to reach them, and we have seen them fail many times in the past, we recommend changing them every time you change the spark plugs (for the cautious) or every other time you change the spark plugs if you're comfortable with that.
We sell these as a pair (2X units), all you need for one vehicle.
- When servicing the coolant system, we recommend replacing all rubber hoses on vehicles 10+ years old to ensure there are no leaks later. We offer these sets for the 997 Turbo (Manual here / Tiptronic here), 996 GT3, 997 GT3 & RS, and 997.2 GT3 & RS.
- On 997 Turbo / GT2 and 997/997.2 GT3 & RS models, we also reocommend replacing the plastic oil cooler tubes with our stainless steel pipes (Turbo version link, GT3 version link) to ensure there are no failures later due to the weak construction of this original part.
- We also recommend inspecting and possibly replacing the Thermostat, Coolant Expansion Tank, Water Pump, Camshaft Position Sensors, and Spark Plugs while working on the coolant system.
- Check the condition of your engine mounts (we often replace worn ones with semi-solid RSS upgraded ones)
- Replace the worn-out/cracked Auxiliary Recirculation Turbo Pump
- If your Turbo has the P0021 code and Camshaft issue you can perform this fix at the same time