Bilstein 24-178488 Suspension Shock Absorber - Front Left

Bilstein B6 Front Left Shock Absorber

The Bilstein B6 Performance shock absorber, part number 24-178488, is a front left suspension upgrade for select BMW models with standard or non-electronic suspension. It uses a monotube design and application-specific valving to improve control while working with the OE factory spring.

Built for BMW 528i, 535i, 535d, 550i, ActiveHybrid 5, 640i, and 650i applications, this Bilstein shock absorber is finished in yellow paint and uses a stem upper mount with a clevis lower mount. The B6 Performance line focuses on restoring and refining handling response without changing the factory spring setup.

Key Features

• Bilstein B6 Performance series front left shock absorber
• Monotube internal design for consistent damping response
• Application-specific valve settings matched to OE spring use
• Yellow paint finish
• Upper stem mount and lower clevis mount
• No boot included
• Part number 24-178488

Detailed Description

Bilstein B6 Performance dampers are engineered as an OE-style performance upgrade for vehicles retaining the factory spring. For BMW 528i, 535i, 535d, 550i, ActiveHybrid 5, 640i, and 650i front left suspension service, this shock absorber is built to improve handling precision and safety while maintaining factory ride-height compatibility. The monotube construction helps deliver stable damping performance, and each unit is tested to meet or exceed OE standards. If you are replacing a worn front left shock on a BMW 640i Gran Coupe or 650i Gran Coupe without electronic suspension, part number 24-178488 provides a direct-fit solution for the listed applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive front-end bounce or oscillation
• Reduced steering response on BMW 528i, 535i, and 550i models
• Uneven damping feel from a worn front left shock absorber
• Loss of control during braking, cornering, or lane changes
• Ride quality decline on standard-suspension BMW applications

Installation Notes

Compatible with front left positions only for the listed BMW applications. Verify whether the vehicle has electronic suspension before ordering, since the fitment notes specify non-electronic suspension or standard suspension without electronic suspension. Confirm mount style, suspension configuration, and model year before installation. This shock absorber is intended for use with the OE factory spring.

Quality Assurance

Bilstein B6 Performance dampers are individually tested and built to meet or exceed OE standards. The monotube design and application-specific valving support consistent performance across the listed BMW fitments, including 2011-2019 BMW 528i, 535i, 535d, 550i, ActiveHybrid 5, 640i, and 650i front left applications.