Bilstein 3B0-513-031 R B4 OE Replacement Rear Shock Absorber

The Bilstein 3B0-513-031 R is a B4 Series OE Replacement rear shock absorber engineered to restore factory ride quality and handling precision. Designed as a direct-fit replacement, this unit matches original equipment specifications for a straightforward, no-modification installation.

Part of Bilstein's renowned B4 Series, this shock absorber utilizes a proven twin-tube design with gas pressure damping technology, delivering consistent, fade-resistant performance over the life of the part. The B4 line is built to OE standards — making it the trusted choice for restoring worn or failed factory suspension components.

Key Features:

• B4 OE Replacement Series — engineered to match original factory specifications
• Twin-tube gas pressure construction for consistent damping performance
• Rear axle application — telescopic shock absorber, spring-bearing damper style
• Black painted finish for corrosion resistance
• Stem upper mount / Eye lower mount for direct OE-style fitment
• No boot included — direct replacement for original equipment

OEM Cross-Reference Numbers: 3B0 513 031 R, 3B0513031R, 3B0 513 031 N, 3B5 513 031 D, 3B7 513 031 A, 3B9 513 031 L, 3B9 513 031 K, 4B3 513 031 G, 4B3 513 031 H, 4B5 513 031 M, 4B9 513 031 A, 4B9 513 031 E, 4B9 513 031 K, 4B9 513 031 M, 4B9 513 031 N, 4B0 513 031 Q, 4A5 513 031, 4A9 513 031 C

Bilstein's B4 shock absorbers are a benchmark in OE-quality replacement suspension, trusted by professional technicians and enthusiasts alike for their consistent fit, reliable durability, and factory-matched ride characteristics.