Unity 13-512800 Shock Absorber - Rear

OEM-Style Rear Air Suspension Shock

Unity 13-512800 is an OEM-style electronic air suspension shock absorber built to match factory dimensions and suspension geometry. It is specified with OEM collapsed length, extended length, and shock stroke for a direct-fit replacement on select Mercedes-Benz R-Class rear applications.

Compatible With 2006-2013 Mercedes-Benz R350, rear; 2007-2009 Mercedes-Benz R320, rear; and 2006-2008 Mercedes-Benz R500, rear. This part number, 13-512800, is a practical choice when replacing a worn rear shock on vehicles equipped with Adaptive Damping Suspension (ADS) and OEM electronic gas shock configurations.

Key Features

• OEM-style electronic air suspension shock absorber
• Factory-matched collapsed length, extended length, and stroke
• Rear position application for select Mercedes-Benz R-Class models
• Supports vehicles with Adaptive Damping Suspension (ADS)
• Unity aftermarket suspension part for OE-style replacement needs

Product Details

Unity Automotive has more than 40 years of aftermarket suspension manufacturing experience and offers broad coverage across suspension applications. The 13-512800 is part of Unity’s OEM Style Electronic Air Suspension Shock Absorber line, focused on restoring factory-like fitment and suspension response for Mercedes-Benz R350, Mercedes-Benz R320, and Mercedes-Benz R500 rear applications. If you are searching for a rear air shock absorber for 2006-2013 Mercedes-Benz R350 or a replacement electronic gas shock for 2007-2009 Mercedes-Benz R320, this part number provides an OE-style solution built around the original suspension dimensions.

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

Common Problems This Part Addresses

• Rear suspension sag or uneven ride height
• Excessive bouncing or reduced damping control
• Warning lights related to electronic suspension performance
• Noisy or worn rear shock operation
• Loss of factory ride quality on ADS-equipped vehicles

Installation Notes and Tips

Verify rear fitment by year, model, and suspension system before ordering. This shock absorber is specified for Mercedes-Benz R-Class rear applications with Adaptive Damping Suspension (ADS) and OEM electronic gas shock configuration. Compare the original shock dimensions and connector style to confirm match before installation. Professional installation is recommended for electronic air suspension components.

Quality Assurance

Unity Automotive manufactures suspension parts with a focus on OE-style fit and application coverage. The 13-512800 is built to OEM length and stroke specifications to support proper suspension geometry on the listed Mercedes-Benz R350, R320, and R500 rear applications.