Arnott AS-2821 Air Suspension Strut - Rear Right

Rear Right Air Strut for Mercedes-Benz W221/W216

Arnott AS-2821 is a new rear right air suspension strut assembly for select 2007-2014 Mercedes-Benz S-Class and CL-Class models with AIRMATIC. It is built as a fully assembled replacement for the rear right corner and is designed for vehicles with or without 4MATIC.

For Mercedes-Benz S550, S600, S63 AMG, S65 AMG, CL550, and other listed applications, AS-2821 provides a direct-fit solution that plugs into the vehicle’s electronic connector and helps clear suspension-related fault codes. Arnott AS-2821 is assembled in the USA and uses new components throughout the air spring and damper assembly.

Key Features

• New, not remanufactured, rear air suspension strut assembly
• Fits rear right applications on Mercedes-Benz W221 S-Class and W216 CL-Class models with AIRMATIC
• Designed for vehicles with and without 4MATIC
• Custom-valved shock absorber with hydraulic internal damper
• Durable Continental ContiTech rubber air spring bladder
• Aluminum can and dust baffle help shield internal components from road debris
• Heavy-duty crimping rings, seals, O-rings, bumpstop, and spring isolators included in the assembly
• Direct electrical connector fitment
• Air adjustable, gas charged, progressive spring rate design

Product Details

Arnott’s NEW product line focuses on replacement air suspension components built as complete assemblies rather than repair-only parts. AS-2821 follows that approach with a new shock absorber, new air spring bladder, and protective hardware integrated into one rear strut for the Mercedes-Benz S-Class and CL-Class platform. The assembly is engineered to replace the original rear right air strut on AIRMATIC-equipped sedans while maintaining the factory-style electronic connection and ride-height function.

This part cross-references Mercedes-Benz OE numbers 2213205613 and 2213205813 for the same application. Arnott AS-2821 is a direct replacement choice for drivers searching for a rear right air suspension strut for 2007-2013 Mercedes-Benz S550, 2007-2013 S600, or 2009-2014 CL550 models.

Common Problems This Part Can Address

• Rear suspension sagging or uneven ride height
• Air leaks from a worn bladder or aging seals
• Suspension warning lights or fault codes related to the rear strut
• Noisy or harsh rear suspension operation
• Loss of damping control at the rear right corner

Installation Notes

• Fits rear right position only on the listed Mercedes-Benz applications
• Verify AIRMATIC equipment before ordering
• Mounting hardware is not included
• Professional installation is recommended for air suspension service
• After installation, clear fault codes and perform system checks as required by the vehicle

Quality Assurance

AS-2821 is a new Arnott air suspension strut assembled in the USA with a Continental ContiTech air spring bladder and reinforced sealing components. The design includes protective shielding and direct connector integration to support reliable replacement on Mercedes-Benz S-Class and CL-Class rear suspension systems.