Arnott MR-3852 Suspension Strut - Front

Arnott MR-3852 Front Magnetic Strut

The Arnott MR-3852 is a front magnetic suspension strut for select Audi performance sedans and hatchbacks with electronic suspension. It is built as a universal left or right front unit for the Audi A3 and S3 8V platform, including hybrid applications, and connects to the vehicle ECU without modification.

For drivers searching for a front magnetic strut for a 2017-2020 Audi A3 or a 2015-2020 Audi S3 with electronic suspension, this OES-style replacement restores the adaptive ride control expected from the factory system.

Key Features

• Front magnetic strut for Audi A3, Audi S3, and RS3 applications with electronic suspension
• Universal fitment for left or right front side
• Monotube damper construction for consistent suspension response
• Magnetorheological fluid changes damping stiffness through electromagnetic control
• Adjustable damping function built into the magnetic ride system
• New suspension strut with a standard-grade design
• Upper stud mount and lower base cup mount configuration
• Spring seat included; boot and mounting hardware not included

Product Details

The Arnott Magnetic Strut line is engineered for vehicles equipped with electronically controlled suspension. The MR-3852 uses a monotube damper filled with magnetorheological fluid, allowing the suspension to change damping characteristics when the control system activates the internal electromagnetic coils. That means the strut responds to the vehicle’s electronic commands to maintain the adaptive ride behavior associated with the OE setup. This part number, MR-3852, is a direct front replacement for the left or right side on the Audi A3 and Audi S3 8V platform, and it also serves RS3 front applications listed below.

This part cross-references 8V0413029K and 8V0413029P for the same application.

What It Helps Fix

• Front suspension noise from a worn magnetic strut
• Loss of adaptive damping response
• Uneven or harsh ride quality at the front axle
• Electronic suspension fault conditions tied to a failing strut
• Ride control issues on Audi A3, Audi S3, and RS3 front suspension systems

Installation Notes and Tips

Compatible With 2017-2020 Audi RS3, front, w/Electronic Suspension; Magnetic Strut. Compatible With 2015-2020 Audi S3, front, w/Electronic Suspension; Magnetic Strut. The MR-3852 connects to the vehicle ECU with no modifications. Verify the front left or front right location before installation, since this universal unit serves either side. Transfer or reuse any required components not supplied with the strut, and confirm the suspension system is equipped with electronic magnetic ride control before ordering.

Quality Assurance

Arnott manufactures the MR-3852 as a new magnetic suspension strut for OE-style electronic ride control applications. The design follows the factory magnetic suspension concept used on the Audi A3 and Audi S3 platform, with direct ECU integration and no vehicle-side modification required.