Arnott AS-3411 Air Suspension Strut - Front Left

Arnott AS-3411 Front Left Air Strut

Arnott AS-3411 is a new aftermarket air suspension strut for the front left side of select Mercedes-Benz GL and GLS models with Airmatic and without Adaptive Damping System (ADS). It combines a model-specific shock absorber and air spring to restore controlled ride height, comfort, and handling response.

Built for the 2013-2019 Mercedes-Benz GL/GLS X166 chassis, this assembly uses Tier 1 components and is assembled in the USA. The Arnott NEW product line focuses on application-specific replacement parts engineered for direct-fit suspension service on vehicles such as the Mercedes-Benz GLS450, GLS550, and GL550.

Key Features

• New Arnott-engineered aftermarket air suspension strut
• Front left position for Mercedes-Benz GL/GLS X166 chassis applications
• Designed for vehicles with Airmatic and without ADS / Adaptive Suspension
• Model-specific shock absorber and air spring in one assembly
• Premium multi-layer cross-corded Continental ContiTech air sleeve
• Aluminum can and dust cover for added protection
• Formed steel top mount, O-rings, polyurethane bump stop, and heavy-duty crimping rings
• Includes new airline fitting and check valve
• Air adjustable, air ride suspension, progressive spring rate, and hydraulic internal damper
• Compatible with OE cross-reference numbers 1663202513 and 1663204966

Detailed Description

AS-3411 is engineered as a direct replacement air suspension strut for the front left side of the Mercedes-Benz GL and GLS platform. It is built for vehicles equipped with Airmatic and not equipped with Adaptive Suspension (ADS), making it a precise service part for common front-end ride-height and damping concerns on the X166 chassis. This part number, Arnott AS-3411, is designed to support consistent suspension performance on applications including the Mercedes-Benz GL350, GL450, GL550, GL63 AMG, GLS450, GLS550, GLS63 AMG, GLS500, and GLS350d where listed fitment applies.

The Arnott NEW line emphasizes application-specific construction, and this strut uses a Continental ContiTech air sleeve, protective aluminum can, dust cover, formed steel top mount, and integrated hardware elements such as a check valve and airline fitting. The result is a complete front left air strut assembly intended for service replacement on Mercedes-Benz GL/GLS models from 2013-2019.

What It Helps Address

• Front-left air strut leakage or loss of air pressure
• Uneven ride height at the front of the vehicle
• Excessive bouncing, harshness, or reduced damping control
• Suspension warning lights related to air spring or strut failure
• Ride quality decline on Mercedes-Benz GL and GLS Airmatic systems

Installation Notes and Tips

Fits 2017-2019 Mercedes-Benz GLS450, front left, w/o Adaptive Plus Suspension (ADS+); NEW. Fits 2019 Mercedes-Benz GLS500, front left, w/o Adaptive Plus Suspension (ADS+); NEW. Fits 2017 Mercedes-Benz GLS500, front left, w/o Adaptive Plus Suspension (ADS+); NEW. Fits 2017-2019 Mercedes-Benz GLS550, front left, w/o Adaptive Plus Suspension (ADS+); NEW. Fits 2017-2019 Mercedes-Benz GLS63 AMG, front left, w/o Adaptive Plus Suspension (ADS+); NEW. Fits 2017 Mercedes-Benz GLS350d, front left, w/o Adaptive Plus Suspension (ADS+); NEW. Fits 2013-2016 Mercedes-Benz GL350, front left, not compatible with vehicles equipped with Adaptive Suspension (ADS). Fits 2013-2016 Mercedes-Benz GL450, front left, not compatible with vehicles equipped with Adaptive Suspension (ADS). Fits 2013-2016 Mercedes-Benz GL550, front left, not compatible with vehicles equipped with Adaptive Suspension (ADS). Fits 2013-2016 Mercedes-Benz GL63 AMG, front left, not compatible with vehicles equipped with Adaptive Suspension (ADS). Fits 2013-2015 Mercedes-Benz GL500, front left, not compatible with vehicles equipped with Adaptive Suspension (ADS).

Verify the vehicle is equipped with Airmatic and does not use ADS before ordering. Confirm the front left mounting configuration and compare the OE part number to the vehicle’s original strut for proper application matching. Professional installation and system inspection are recommended after replacement.

Quality Assurance

Arnott backs this aftermarket Mercedes-Benz front air strut with its industry-leading warranty. AS-3411 is a new part, assembled in the USA, and built with Tier 1 components for consistent fitment and service life.