Arnott AS-3154 Air Suspension Strut - Front Left

Front Left Air Strut for Mercedes-Benz SUVs

Arnott AS-3154 is a new front left air suspension strut for select Mercedes-Benz GL, GLS, ML, and GLE-Class models equipped with Airmatic and ADS. It is built for drivers who need a direct-fit replacement that restores ride height control, damping response, and everyday comfort.

Fits 2013-2019 Mercedes-Benz GL/GLS-Class, front left, and 2012-2018 Mercedes-Benz ML/GLE-Class, front left, with Airmatic and ADS, excluding AMG models.

Key Features

• New Arnott engineered aftermarket air suspension strut
• Front left-hand side application
• Premium Eibach custom-tuned hydraulic damper for a balanced ride
• Multi-ply cross-corded ContiTech air sleeve for long service life
• Aluminum can and dust cover protect the air sleeve
• CNC-machined top mount made from aircraft-quality aluminum
• Includes long-lasting O-rings, bump stop, heavy-duty crimping rings, new airline fitting, and connector valve
• Air adjustable design with progressive spring rate
• Mounting hardware included

Product Details

The Arnott AS-3154 is designed for Mercedes-Benz GL/GLS-Class (X166) and ML/GLE-Class (W166) vehicles that use Airmatic and ADS. Arnott’s NEW product line focuses on engineered replacement suspension components, and this assembly combines a tuned damper with a durable air spring structure to maintain factory-style ride control. The AS-3154 also cross-references Mercedes-Benz part numbers 1663201313 and 1663205366 for the same application.

This part number, AS-3154, is assembled in the USA and uses Tier 1 components throughout the air spring assembly. The design includes a stud upper mount, clevis lower mount, bearing plate, upper mounting isolator, spring isolators, and a black boot for added protection.

Common Problems This Part Can Address

• Front-left corner sagging or uneven ride height
• Air leaks from a worn air sleeve or cracked bladder
• Excessive bouncing, harshness, or reduced damping control
• Suspension warning lights related to air strut performance
• Noisy or unstable ride behavior from a failing strut assembly

Installation Notes and Tips

Confirm vehicle equipment before ordering: this strut is for Airmatic and ADS-equipped models and excludes AMG applications. Verify the front left position, inspect the airline connection and mounting points, and follow Mercedes-Benz suspension service procedures during installation. After installation, the system should be checked for leaks and ride height calibration should be verified.

Quality Assurance

Arnott builds this AS-3154 air suspension strut with a CNC-machined aluminum top mount, ContiTech air sleeve, and heavy-duty sealing and crimping components for consistent performance in daily driving conditions. The assembly is new, not remanufactured, and is designed to meet the demands of Mercedes-Benz GL, GLS, ML, and GLE-Class air suspension systems.