Arnott AS-3409 Air Suspension Strut - Front Left

Front Left Air Strut for Mercedes-Benz SUVs

Arnott AS-3409 is a new aftermarket air suspension strut for the front left side of select Mercedes-Benz GL, GLS, ML, and GLE models equipped with Airmatic and ADS. It combines a model-specific shock absorber and air spring to restore ride control, comfort, and height management on the X166 and W166 chassis.

Built with Tier 1 components, this Arnott air strut uses a multi-layer Continental ContiTech air sleeve, aluminum can, and dust cover, along with a formed steel top mount, polyurethane bump stop, new airline fitting, and check valve. The AS-3409 is assembled in the USA and engineered for direct replacement service on the front left corner.

Key Features

• New Arnott-engineered aftermarket air suspension strut
• Front left position for Mercedes-Benz GL/GLS and ML/GLE applications
• Designed for vehicles with Airmatic and ADS
• Model-specific shock absorber and air spring assembly
• Premium Continental ContiTech multi-layer air sleeve
• Aluminum can and dust cover for added protection
• Formed steel top mount with O-rings and upper mounting isolator
• Polyurethane bump stop, heavy-duty crimping rings, airline fitting, and check valve
• Air adjustable with progressive spring rate
• Mounting hardware included

Detailed Description

Arnott AS-3409 is designed for drivers replacing a worn front left air strut on Mercedes-Benz GL350, GL450, GL550, GL500, GLS, ML, and GLE platforms. It is a direct-fit air suspension strut for the front left side and is built to address ride-height control, damping consistency, and suspension response in vehicles using adaptive air suspension systems. This part number, AS-3409, is a practical OE-style replacement for the Mercedes-Benz front suspension corner where air spring leakage, loss of support, or degraded damping can affect drivability.

This part cross-references Mercedes-Benz OE numbers 1663201313 and 1663205166 for the same application.

Common Problems It Can Help Solve

• Front-end sagging after parking
• Air leaks from a worn air spring bladder
• Excessive bounce or reduced damping control
• Uneven ride height at the front left corner
• Suspension warning lights related to air suspension performance

Installation Notes and Tips

Verify Airmatic and ADS equipment before ordering. This front left air suspension strut is used on 2012-2018 ML/GLE and 2013-2018 GL/GLS applications, with model-specific fitment by year and trim. Confirm the chassis and body style, especially on 2016 GLE350d applications where coupe models are excluded. Inspect the airline, fittings, and related suspension components during installation to help prevent repeat leaks or uneven ride height.

• Fits 2016-2019 Mercedes-Benz GLE350, front left
• Fits 2016-2019 Mercedes-Benz GLE400, front left
• Fits 2019 Mercedes-Benz GLE450, front left
• Fits 2016-2019 Mercedes-Benz GLE500, front left
• Fits 2018-2019 Mercedes-Benz GLE500e, front left
• Fits 2016-2018 Mercedes-Benz GLE550, front left
• Fits 2016-2018 Mercedes-Benz GLE550e, front left
• Fits 2016-2017 Mercedes-Benz GLE300d, front left
• Fits 2013-2016 Mercedes-Benz GL350, front left, with Adaptive Suspension (ADS)
• Fits 2013-2016 Mercedes-Benz GL450, front left, with Adaptive Suspension (ADS)
• Fits 2013-2016 Mercedes-Benz GL550, front left, with Adaptive Suspension (ADS)
• Fits 2016 Mercedes-Benz GLE350d, front left, excluding coupe models
• Fits 2013-2015 Mercedes-Benz GL500, front left, with Adaptive Suspension (ADS)
• Fits 2015 Mercedes-Benz ML250, front left
• Fits 2012-2015 Mercedes-Benz ML350, front left
• Fits 2015 Mercedes-Benz ML400, front left
• Fits 2012-2015 Mercedes-Benz ML500, front left
• Fits 2012-2015 Mercedes-Benz ML550, front left

Quality Assurance

AS-3409 is a new Arnott part assembled in the USA using premium components and backed by Arnott’s industry-leading warranty. It is engineered for consistent fitment and dependable performance on Mercedes-Benz GL/GLS and ML/GLE front left air suspension applications.