Bilstein 26-320502 B4 OE Replacement DampTronic Rear Left Shock Absorber

The Bilstein 26-320502 is a B4 Series OE Replacement DampTronic shock absorber designed as a direct, plug-and-play replacement for the electronically adjustable dampers found on BMW vehicles equipped with active suspension systems. Engineered to match original equipment specifications in both quality and functionality, this rear left monotube gas-pressure shock absorber restores the ride comfort, handling precision, and safety your vehicle had from the factory.

Unlike many remanufactured alternatives, the Bilstein B4 DampTronic unit retains full compatibility with the vehicle's active suspension control system — no reprogramming or additional modifications required. It installs exactly like the original part and communicates seamlessly with factory suspension electronics.

Key Features:

• DampTronic Technology: Full plug-and-play compatibility with active and electronically adjustable suspension systems
• Monotube Gas-Pressure Design: Delivers consistent damping force under any load condition for stable, predictable handling
• OE-Spec Engineering: Manufactured to original equipment standards — same quality as factory-fitted components
• Position: Rear Left
• Internal Design: Monotube
• Collapsed Length: 14.87 in (377.8 mm)
• Extended Length: 20.14 in (511.8 mm)
• Lower Mount Type: Eye 12.1mm
• Upper Mount Type: Stem
• Finish: Black Paint
• Boot Included: No
• Spring Seat Included: No
• Country of Origin: Germany

OEM Cross-Reference Part Numbers: BMW 33 50 8 091 379 / 8 091 383 | Corresponding Bilstein Part: 26-345901

The Bilstein B4 DampTronic shock absorber is the ideal solution for drivers who want to restore their BMW's original suspension performance with a cost-effective, factory-quality replacement that requires no compromises on ride dynamics or active suspension functionality.