Arnott Industries Suspension Strut MR-3855

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Arnott Industries Suspension Strut P/N:MR-3855

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$770.99

MPN: MR-3855

Item Package Code: EA

Part Has Core (Y/N): N

Item Package Quantity: 1

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Arnott Industries Suspension Strut P/N:MR-3855

$770.99

Description

Keep the adaptive, factory-tuned ride your Audi was built around with the Arnott Industries Suspension Strut MR-3855 (also written MR3855). This front magnetic ride shock drops in as a direct-fit replacement for the 2018-2023 Audi TT RS Quattro and 2016-2023 Audi TTS Quattro (8S), delivering the same highly adaptive damping as the OE unit. It connects to the vehicle's ECU with no modifications.

OES magnetic damping: A monotube damper filled with magnetorheological fluid — a synthetic hydrocarbon oil carrying easily magnetized iron particles.
Instant response: Two internal electromagnetic coils change the bonds between the iron particles when energized, altering the fluid's viscosity and the suspension's stiffness on the fly.
Plug-and-play: Connects to the vehicle ECU with no modifications, using OES design and components to restore factory ride and handling.

Signs a strut may need replacing include a rough or bouncy ride, reduced control, uneven tire wear, or a fault flagged for the adaptive damping circuit. Diagnose the cause before replacing. Sold individually; for best results Arnott recommends replacing struts in pairs for balanced ride and handling. See the Buyer's Guide tab for full engine-level fitment.

Interchange: 8S0413029F

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

This part cross-references / interchanges with the following part numbers:

8S0413029F

Frequently Asked Questions

What vehicles does the MR-3855 strut fit?

It's a direct-fit front replacement for the 2018-2023 Audi TT RS Quattro and 2016-2023 Audi TTS Quattro (8S). Check the Buyer's Guide tab to confirm your exact application.

How does this magnetic ride strut work?

Its monotube damper is filled with magnetorheological fluid containing iron particles. Two electromagnetic coils change the bonds between those particles, instantly altering the fluid's viscosity and the suspension's stiffness.

Do I need to modify anything to install it?

No. Arnott's magnetic ride shock connects to the vehicle's ECU with no modifications, using OES design and components.

Should I replace both struts at once?

Arnott recommends replacing in pairs for best results. This listing is for one strut, so order two for balanced ride and handling across the axle.

What number does this strut interchange with?

The MR-3855 cross-references OE number 8S0413029F. Match this against your original part to confirm the correct replacement.