Bilstein 24-166980 Air Shock Absorber - Rear

Bilstein B4 OE Replacement (Air) Rear Shock

The Bilstein B4 OE Replacement (Air) rear shock absorber restores factory-style ride control for select Mercedes-Benz air suspension applications. Built for direct connection to the original vehicle connectors, this rear damper supports a modification-free replacement on ML-Class and GL-Class models.

Part number 24-166980 is part of Bilstein’s B4 OE Replacement (Air) line, a series focused on replacing original air suspension dampers with OE-style fit and function. For drivers servicing a Mercedes-Benz ML350, ML550, ML320, ML500, or GL320 rear suspension, this shock is built to match the original mounting and system layout.

Key Features

• Bilstein B4 OE Replacement (Air) rear air shock absorber
• Direct-fit design for original vehicle connectors
• Monotube internal design for consistent damping response
• Black paint finish with black straight boot
• Reservoir included
• Upper stem mount and lower clevis mount
• Built for rear suspension applications on select Mercedes-Benz models

Detailed Description

Bilstein 24-166980 is engineered as an OE replacement air damper for rear suspension service on select Mercedes-Benz vehicles. The B4 OE Replacement (Air) series is designed to restore the original feel of the vehicle while maintaining the factory air suspension connection points. This makes it a practical choice for replacing worn rear air shocks on 2006-2011 Mercedes-Benz ML350, 2008-2011 Mercedes-Benz ML550, 2007-2009 Mercedes-Benz GL320 with electronic suspension, 2007-2009 Mercedes-Benz ML320, and 2006-2007 Mercedes-Benz ML500 applications.

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

What This Part Helps Address

• Rear suspension sag from a worn air shock absorber
• Uneven ride height at the back of the vehicle
• Excessive bouncing or reduced damping control
• Loss of factory ride quality in air suspension systems
• Fitment issues caused by a damaged or leaking OE-style rear damper

Installation Notes and Tips

Compatible With rear suspension applications only. Verify the vehicle’s year, model, and suspension configuration before ordering, especially on GL320 models with electronic suspension and ML350 or ML500 models with air suspension. The shock uses a stem upper mount and clevis lower mount, and it connects directly to the original system layout for a modification-free installation.

For best results, inspect related air suspension components, mounting points, and connectors during replacement. Confirm that the vehicle matches the listed rear fitment for 2006-2011 Mercedes-Benz ML350, ML550, ML320, ML500, and GL320 applications before installation.

Quality Assurance

Bilstein supplies OE suspension components for air suspension systems, and the B4 OE Replacement (Air) line is built to meet the standards expected for original-equipment replacement on European vehicles. Part number 24-166980 is manufactured to support direct-fit service on the specified Mercedes-Benz rear applications.