Porsche Gas Pressure Spring - 911 09-12 997-512-551-91 91155931901 Thorough Cleaning: Removes harmful deposits

Thorough Cleaning: Removes harmful deposits from various parts of your diesel engine's fuel system

all materials used in production

however there are threads on the Rennlist Porsche forums that will be of assistance (see links below)

This genuine OEM 9A1 front alloy wheel is a stylish and durable upgrade for your Porsche

Porsche Gas Pressure Spring - 911 09-12 997-512-551-91 91155931901 Thorough Cleaning: Removes harmful depositsPorsche Gas Pressure Spring For Porsche 997 (2009 2012) Models. Maximize the performance of your car with Gas Pressure Spring 911 (09 12). This high quality spring provides maximum pressure for optimal engine performance, resulting in smoother acceleration and improved handling. Upgrade your car's performance with Gas Pressure Spring.