Fuel Pressure Regulators

TGK Motorsport High Pressure Fuel Pump Piston Upgrade Kit – Audi 3.0T Supercharged (S4 / S5 / SQ5 / A6 / A7) increases fuel system capacity by upgrading the factory high-pressure fuel pump internals with a larger precision-machined piston. This direct-replacement kit improves fuel flow by approximately 36%, raising factory fueling limits to support higher horsepower builds, ethanol blends such as E40/E85, and advanced ECU tuning. Built with hardened tool steel and a DLC-coated piston for durability and reduced friction, it delivers reliable high-pressure fuel delivery for modified Audi 3.0T supercharged engines.