BILSTEIN 19-317410 Shock Absorber B4 (R1) BMW 1 F40 mit M-Fahrwerk;H ymm_32 The transmission cooler is a

The transmission cooler is a heavy-duty high-performance 5 plate design that connects to the OEM hoses

this Alternator cover is a direct OEM replacement for easy installation

resulting in increased power and acceleration across the engine's RPM range

we added a second inlet to the airbox with a scoop pulling in air from the inner wing area

Chattering of plates are minimized in the RS Type design with consistent pressure across the radius of the friction plate surface

BILSTEIN 19-317410 Shock Absorber B4 (R1) BMW 1 F40 mit M-Fahrwerk;H ymm_32 The transmission cooler is aDescription BILSTEIN 19 317410 Rear Shock Absorber B4 OE Replacement The Bilstein B4 is designed as an ideal OE replacement shock absorber. Its specifications and function match the original equipment, and it is manufactured to the same quality standards as OE, making it suitable for reliable replacement of the original shock absorber. The Bilstein B4 restores the vehicles original handling characteristics, providing a driving experience similar to