Thermostatic sandwich adapter installed between the oil filter and the engine block. Starts directing oil to the oil cooler at 71°C, and directs all flow to the cooler from 82°C.
Reinforced silicone hose connecting the throttle body to the check valve, replacing the cracked and leaking original rubber part on Audi UrS4/S6 AAN engines. Service life equivalent to the vehicle's.
Complete set of 20 titanium valve spring retainers, direct replacement for all 20V 5-cylinder engines. Weighs half as much as the original part (9-10 g vs. 20 g). Reduces valvetrain mass and prevents valve float.
Dual-rate high-pressure valve spring kit with titanium retainers, for 12-valve VR6. Titanium retainers: maximum lift higher than OEM retainers, half the weight. Sold as a complete set for one engine.
Dual high-pressure valve spring kit with spring seats and titanium retainers, for 24-valve VR6. Titanium retainers: maximum lift higher than OEM retainers, half the weight. Sold as a complete set for one engine.
