Bilstein B4 OE Replacement 15-19 Audi A3 Quattro Rear Shock Absorber 1989 The By-Pass-Valve (BPV) gets its

The By-Pass-Valve (BPV) gets its own hard-pipe from the cold side of the intercooler

This adapter ring is for IE B9/B9

HKS designed this as part of a broader performance build alongside intake

Additional cool air is brought into the housing via the factory air inlet scoop

increasing the possibility for leakage into the cam follower region

Bilstein B4 OE Replacement 15-19 Audi A3 Quattro Rear Shock Absorber 1989 The By-Pass-Valve (BPV) gets itsBilstein B4 OE Replacement dampers are specifically engineered to be the best choice for maintaining the original ride quality of your vehicle, while meeting or exceeding OE standards. These dampers are the ideal choice for the driver looking to restore the original performance and handling of their vehicle, with the added benefit of world famous Bilstein quality. Material Safety Data Sheet Installation Instructions Warranty Material Safety Data Sheet