Arnott Industries Suspension Strut and Coil Spring Assembly P/N:SK-3978
$291.99
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Restore a smooth, controlled front ride on your Mercedes-Benz SUV with the Arnott Suspension Strut and Coil Spring Assembly SK-3978 (also written SK3978). This pre-assembled front unit drops in as a direct-fit replacement for the listed applications: the 2006-2011 Mercedes-Benz ML500, 2007-2009 ML320, 2007-2011 ML350, and 2008-2011 ML550 — see the Buyer's Guide tab for engine-level details.
Delivered as a complete strut and coil spring assembly, it combines the shock, coil spring, and mounting components into one bolt-in package for convenient installation.
Coil-over design: Arnott's exclusive coil-over strut is engineered and tested to mimic the stability, handling, control, and comfort of the original OE strut, without any external commands from the vehicle.
Active-to-passive conversion: converts an electronic/active shock to a custom-valved passive shock adapted to the driving style.
Improved seals: designed to help prevent leaks.
Engineered and assembled in the USA.
Arnott recommends replacing these struts in pairs for best results and balanced ride quality.
Interchange: 1643200130 · 164320013064
This part cross-references / interchanges with the following part numbers:
1643200130, 164320013064
Frequently Asked Questions
What vehicles does the Arnott SK-3978 fit?
It is a direct-fit front replacement for the 2007-2009 Mercedes-Benz ML320, 2007-2011 ML350, 2006-2011 ML500, and 2008-2011 ML550. Check the Buyer's Guide tab to confirm your vehicle.
Is this a complete strut and coil spring assembly?
Yes. It ships as a pre-assembled unit with the shock, coil spring, and mounting components combined, so no separate spring compression is needed during installation.
Does this convert my electronic suspension to passive?
Yes. The SK-3978 uses a custom-valved shock that converts an active/electronic setup to a passive shock adapted to the driving style, engineered to mimic the OE strut's feel.
Should I replace both front struts at the same time?
Arnott recommends replacing these struts in pairs for best results, which helps keep the ride balanced side to side. This listing covers one assembly.
What numbers does the SK-3978 cross-reference?
It interchanges with 1643200130 and 164320013064. Match one of these numbers or your vehicle in the Buyer's Guide tab to confirm the correct application.
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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.
