Recapture factory-smooth ride control with the Arnott Industries Suspension Shock Absorber MR-3851 (also written MR3851), an OES magnetic-ride rear shock and a direct RS3 shock absorber replacement. This universal magnetic shock fits either the left or right rear of the 2017-2020 Audi RS3 and 2015-2020 Audi S3, and connects to the vehicle's ECU with no modifications.
Magnetorheological damping: a monotube damper filled with magnetorheological fluid — a synthetic hydrocarbon oil that carries easily magnetized iron particles.
Adaptive stiffness: two internal electromagnetic coils instantly change the bonds between the magnetized iron particles, altering the fluid's viscosity and the suspension's stiffness when energized.
Plug-and-play fit: the universal shock fits the left or right side and connects to the vehicle's ECU with no modifications.
OES design and components: engineered to deliver the same highly adaptive ride as the OE unit.
Because it is magnetically controlled, this damper is designed to match the OE's adaptive behavior on the listed Audi applications. For best results, Arnott recommends replacing the rear shocks in pairs so both sides deliver balanced, matched damping.
This part cross-references / interchanges with the following part numbers:
8V0513021AA, 8V0513021G, 8V0513021J, 8V0513021N
Frequently Asked Questions
What vehicles does the MR-3851 shock fit?
It is a direct-fit rear magnetic-ride shock for the 2017-2020 Audi RS3 and 2015-2020 Audi S3. See the Buyer's Guide tab to confirm your exact vehicle.
Is this an RS3 shock absorber replacement?
Yes. The MR-3851 is an OES magnetic-ride rear shock that replaces the original on the 2017-2020 Audi RS3, and it also fits the 2015-2020 Audi S3.
How does this magnetic shock work?
Its monotube damper is filled with magnetorheological fluid containing magnetized iron particles; two internal electromagnetic coils change the fluid's viscosity and the suspension's stiffness when energized.
Does it fit the left or right side?
This universal shock fits either the left or right rear side and connects to the vehicle's ECU with no modifications.
Should I replace both rear shocks together?
Arnott recommends replacing the shocks in pairs for best results, so both sides provide balanced, matched damping.
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WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
