Bilstein 19-138381 Suspension Shock Absorber - Rear

Overview of Bilstein B4 OE Replacement Shock Absorber

The Bilstein shock absorber 19-138381 is designed to restore the original driving comfort and handling of your BMW 525i, 528i, 530i, 535i, 545i, or 550i. Engineered with a twintube internal design and finished in durable black paint, this suspension shock absorber offers reliable performance for daily driving conditions.

• Brand: Bilstein
• Brand Line: B4 OE Replacement
• Part Number: 19-138381
• Internal Design: Twintube
• Finish: Black paint
• Lower Mount Type: Eye 22mm
• Upper Mount Type: Stem
• Boot Included: No

About the B4 OE Replacement Product Line

The Bilstein B4 OE Replacement line is engineered to meet or exceed original equipment specifications, providing a direct replacement for worn or damaged shock absorbers. This product line focuses on restoring the factory ride quality and handling characteristics of your BMW, ensuring consistent performance and safety without modifying the vehicle’s suspension setup.

Product Details and Specifications

The Bilstein 19-138381 shock absorber features a twintube internal design that balances comfort and control, making it suitable for everyday driving on a variety of road surfaces. The black paint finish offers corrosion resistance, extending the service life of the shock absorber. The lower mount uses a 22mm eye, while the upper mount is a stem type, matching the original mounting points on compatible BMW models. Note that this shock absorber does not include a protective boot.

Compatible BMW Models and Applications

• BMW 525i
• BMW 528i
• BMW 530i
• BMW 535i
• BMW 545i
• BMW 550i

This shock absorber is designed specifically for these BMW models, ensuring proper fitment and function when replacing worn suspension components.

Common Issues Addressed by This Shock Absorber

• Reduced ride comfort due to worn shocks
• Excessive body roll or instability during cornering
• Uneven tire wear caused by poor suspension damping
• Increased braking distances from compromised suspension
• Noise or vibration from damaged or leaking shock absorbers

Installation Notes and Tips

When installing the Bilstein 19-138381 shock absorber, ensure the vehicle is securely lifted and supported. Verify that the upper stem and lower 22mm eye mount align correctly with the vehicle’s mounting points. Since this part does not include a boot, inspect the existing protective components and replace if necessary to prevent premature wear. It is recommended to replace shocks in pairs to maintain balanced suspension performance.

Quality Assurance and Warranty

Bilstein manufactures the 19-138381 shock absorber to meet OE standards, ensuring durability and consistent performance. The B4 OE Replacement series is backed by Bilstein’s quality control processes. Please refer to Bilstein’s official warranty policy for specific coverage details.