Bilstein Air Spring with Twintube Shock Absorber Black Paint Finish - No Spring Seat - 44-273439 round Hydraulic modifications to increase cooling

Hydraulic modifications to increase cooling and lubrication

The Stage 6 package includes a billet input shaft for increased reliability when towing heavy loads

Premium Stainless-Steel Clamps and a Silicone Coupling are used for Strength and Durability

Mounts to stock or aftermarket header

Bilstein Air Spring with Twintube Shock Absorber Black Paint Finish - No Spring Seat - 44-273439 round Hydraulic modifications to increase coolingFeatures & Benefits Restores original functionality 100% Manufactured with 100% new parts for maximum reliability and safety 100% OE quality and comfort Bilstein B4 OE Replacement (Air) dampers are designed to replace the original air suspension systems on many European brand vehicles. Bilstein is an OE supplier for air suspension systems; the quality of these products meets, and typically exceeds, the standards set forth by the vehicle's