Unity 28-513601 Air Suspension Strut - Rear Left

Rear Left Air Suspension Strut for Mercedes-Benz

Restore rear suspension control with this Unity Electronic Air Suspension Strut Assembly, part number 28-513601. It is built for rear left applications on select Mercedes-Benz models with Airmatic, including S-Class and CL-Class vehicles from 2007-2014.

Unity Automotive draws on more than 40 years in the aftermarket and builds suspension components to OEM specifications for consistent fit and function. The 28-513601 rear air suspension strut is made for drivers replacing a worn or leaking electronic air strut on a Mercedes-Benz equipped with Airmatic.

Key Features

• Rear left electronic air suspension strut assembly
• Built to OEM specifications for proper fitment
• Designed for Mercedes-Benz vehicles with Airmatic
• Application-specific replacement for rear suspension service
• Unity part number 28-513601

Detailed Description

This Unity Electronic Air Suspension Strut Assembly is a direct-fit rear left replacement for select Mercedes-Benz CL550, CL600, S350, S400, S450, S500, S550, S600, S63 AMG, S65 AMG, CL63 AMG, and CL65 AMG models equipped with Airmatic. It is intended for vehicles that need a rear air strut replacement to restore ride height control, damping response, and suspension stability. This part cross-references Mercedes-Benz OE numbers 2213205513 and 2213205713 for the same application.

Unity’s Electronic Air Suspension Strut Assembly line focuses on OE-style suspension replacements engineered for modern air-suspension systems. If you are searching for a rear left air suspension strut for Mercedes-Benz S550, a rear left Airmatic strut for Mercedes-Benz CL550, or a Unity 28-513601 replacement for a Mercedes-Benz S-Class, this part matches the listed applications.

Common Problems This Part Can Address

• Rear corner sagging or uneven ride height
• Air spring leakage or loss of suspension pressure
• Excessive bouncing or reduced damping control
• Suspension warning lights related to rear air strut failure
• Ride quality changes caused by worn rear suspension components

Installation Notes and Tips

Verify the vehicle is equipped with Airmatic and confirm rear left position before ordering. Match the part number and OE cross-reference numbers to the original unit on the vehicle. After installation, inspect the air lines, electrical connections, and related suspension components for wear or leaks so the new strut can operate correctly.

Quality Assurance

Unity Automotive has over 40 years of aftermarket suspension manufacturing experience and builds this assembly to OEM specifications. The brand supports its products with a customer satisfaction guarantee and a focus on consistent, application-specific suspension performance.