Arnott AS-3523 Air Suspension Strut - Front Left

Front Left Air Suspension Strut for GLC-Class

The Arnott AS-3523 is a new aftermarket air suspension strut for the front left corner of select Mercedes-Benz GLC-Class models. It replaces the OE air strut with a fresh assembly that combines air spring support, ride-height control, and a custom-tuned shock absorber for stable road feel.

Built for the 2016-2023 Mercedes-Benz GLC300 and other listed GLC variants, this front left air suspension strut is assembled in the USA and uses new sealing components, a new air fitting, and a replacement top mount that follows the original design.

Key Features

• Arnott AS-3523 aftermarket air suspension strut for the front left position
• Fits 2016-2023 Mercedes-Benz GLC300, front left
• Fits 2017-2023 Mercedes-Benz GLC43 AMG, front left
• Fits 2021-2022 Mercedes-Benz GLC300e, front left
• Fits 2018-2021 Mercedes-Benz GLC63 AMG and GLC63 AMG S, front left
• Fits 2018-2020 Mercedes-Benz GLC350e, front left
• Fits 2017-2018 Mercedes-Benz GLC250, front left
• New multi-ply air bladder for air ride suspension performance
• Custom-tuned hydraulic shock absorber with gas-charged construction
• Progressive spring rate and air-adjustable design
• New top mount, bearing plate, boot, bump stop, seals, O-rings, and air fitting
• Heavy-duty crimping rings included for bladder retention

Product Details

The Arnott AS-3523 is engineered as a direct replacement for the front left air strut on the Mercedes-Benz GLC-Class X253 platform. It is designed to restore the luxury ride characteristics of air suspension while replacing the aging original shock with a new, calibrated damper for controlled response and consistent leveling. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

For buyers searching for a Mercedes-Benz GLC300 front left air suspension strut, GLC43 AMG air strut replacement, or AS-3523 front left suspension assembly, this unit provides a new build with OE-style mounting points and air suspension functionality. The upper mount uses a stud design, the lower mount uses a clevis design, and the assembly includes a black boot and upper mounting isolator.

Common Problems This Part Can Address

• Front-left air strut leakage causing ride-height loss
• Uneven stance or sagging on the driver-side front corner
• Excessive bounce, harshness, or reduced damping control
• Air suspension warning messages related to strut performance
• Wear in the original air bladder, seals, or top mount components

Installation Notes and Tips

Install AS-3523 on the front left side only and verify vehicle fitment by model, year, and suspension configuration before ordering. Transfer or inspect related suspension components as needed, and confirm air line routing and fitting condition during installation. Because this is a pressurized air suspension component, proper system depressurization and calibration procedures should be followed during service.

Quality Assurance

Arnott designs and assembles this air suspension strut in the USA using new seals, O-rings, bump stop components, and heavy-duty crimping rings. The assembly is built as a new replacement for aging air suspension systems on Mercedes-Benz GLC-Class models, with a focus on restoring OE-style comfort, leveling, and control.