FCS 99046 Air Suspension Strut - Rear Left

Rear Left Air Suspension Strut for Mercedes-Benz

The FCS 99046 is a rear left air suspension strut assembly for select Mercedes-Benz models equipped with Airmatic. It is built for vehicles that need controlled ride height, consistent damping response, and proper rear suspension support. This FCS air suspension strut fits 2007-2014 Mercedes-Benz CL550, 2007-2013 Mercedes-Benz CL600, and multiple S-Class and AMG applications.

Key Features

• Rear left air suspension strut assembly for Airmatic-equipped Mercedes-Benz vehicles
• Compressed length: 28.82 in.
• Extended length: 34.92 in.
• Stroke length: 6.1 in.
• Direct-fit application for select CL-Class and S-Class models
• FCS part number 99046

Product Details

FCS 99046 is an electronic air strut assembly engineered for the rear left position on select Mercedes-Benz CL550, CL600, S350, S400, S450, S500, S550, S600, S63 AMG, S65 AMG, CL63 AMG, and CL65 AMG models with Airmatic. The listed compressed length, extended length, and stroke length help identify the suspension travel range for the application. For buyers searching for a Mercedes-Benz rear left air strut or FCS 99046 replacement, this part matches the specified fitment by year, model, and position.

FCS is the brand line identified for this suspension component, and this part is cataloged as a new electronic air strut assembly for the rear left side. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Vehicle Fitment

• Fits 2007-2014 Mercedes-Benz CL550, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2007-2013 Mercedes-Benz CL600, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2012-2013 Mercedes-Benz S350, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2010-2013 Mercedes-Benz S400, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2007-2013 Mercedes-Benz S550, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2007-2013 Mercedes-Benz S600, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2008-2013 Mercedes-Benz S63 AMG, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2008-2012 Mercedes-Benz CL63 AMG, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2008-2012 Mercedes-Benz CL65 AMG, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2007-2012 Mercedes-Benz S65 AMG, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2008-2011 Mercedes-Benz S450, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS
• Fits 2007-2011 Mercedes-Benz S500, rear left, New Electronic Air Strut Assembly; w/ Airmatic; FCS

Common Issues This Part Addresses

• Rear suspension sag on the left side
• Uneven ride height on Airmatic-equipped Mercedes-Benz models
• Loss of rear suspension travel or damping control
• Air strut wear that affects handling and comfort
• Replacement need for a failed rear left electronic air strut

Installation Notes

Verify the vehicle is equipped with Airmatic and confirm the rear left position before ordering. Compare the original strut’s compressed length, extended length, and stroke length to the specifications listed for FCS 99046. After installation, the suspension system should be checked for proper ride height and electronic operation according to Mercedes-Benz service procedures.

Quality Assurance

This FCS suspension component is cataloged as a new electronic air strut assembly for the specified Mercedes-Benz applications. Use the confirmed fitment data and dimensional specifications to verify application match before installation.