Bilstein B4 06-10 BMW 528xi / 530xi / 535xi Front Left Twintube Strut Assembly 2013-audi-s6-esi8138659 They do this because it

They do this because it allows them to use the original seal and nut assembly

This cartridge style filter comes with a built-in seal for a hassle free installation

Complete pair for both cylinder banks

High-Performance Compatibility: Supports up to 700 horsepower setups

Tow: 3K filaments per fibre

Bilstein B4 06-10 BMW 528xi / 530xi / 535xi Front Left Twintube Strut Assembly 2013-audi-s6-esi8138659 They do this because itBilstein 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. Installation Instructions Warranty Material Safety Data Sheet Material Safety Data Sheet