Porsche Engine Water Pump and Thermostat Kit - Pierburg/Wahler 9X7WTRPMKT

This kit from the Porsche team at FCP Euro includes everything you need to refresh the cooling system on your M96/7 powered Porsche.

In this kit, we've opted to include an OE Pierburg water pump featuring a composite impeller, paired with a low temp OE thermostat from Wahler. For the Porsche enthusiast that enjoys a canyon carve, a backroads blast, or a track day, the low temp thermostat is a great choice to keep engine temperatures under control.

We recommend using an OE-style water pump, featuring a composite impeller for most M96/7 applications. The clearance between the aluminum block and the impeller blades on these motors is very small. If there were to be any misalignment pertaining to installation or bearing failure, metal impeller blades would do significantly more damage to your engine than a composite impeller blade.

Plastic impeller blades present their own issues of degradation, leading to pieces of impeller to be sent through your car's cooling system. In the worst case scenario, this impeller blade can make it through the cooling jackets in the head, causing a hotspot and potential cracking. To solve for this, we recommend a service interval of 3-4 years, or 50,000-60,000 miles (whichever comes first) for a composite impeller water pump.

M96/7 engines are plagued by higher temperatures in cylinders 5 and 6 due to a lack of fresh coolant flow to that section of the engine. If not addressed, this often results in localized , causing excessive wear to the cylinder walls from oil film breakdown. A lower temp thermostat starts circulating coolant through the system earlier, beginning at a lower temperature, leading to a lower propensity to overheat in the first place.

If bore score and cylinder temperatures concern you as an M96/7 owner, we recommend using Liqui-Moly MoS2 with your choice of our high quality oils to protect that thrust side cylinder wall.

Please note that in 40-50 degree F conditions, the car may take slightly longer to warm up. Please be conscious of engine operating temperature before operating the engine above 4 thousand RPMs.