Arnott Industries Suspension Strut and Coil Spring Assembly P/N:SK-3629

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$450.99
MPN: SK-3629
Item Package Code: EA
Part Has Core (Y/N): N
Item Package Quantity: 1
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Arnott Industries Suspension Strut and Coil Spring Assembly P/N:SK-3629
Arnott Industries Suspension Strut and Coil Spring Assembly P/N:SK-3629
$450.99

Firm up rear-corner damping and support the coil spring with the Arnott Industries Suspension Strut and Coil Spring Assembly SK-3629 (also written SK3629), a pre-assembled coil-over strut built for the rear left corner. It's a direct-fit replacement for the 2015-2017 Ford Expedition and 2015-2017 Lincoln Navigator; see the Buyer's Guide tab to confirm your exact vehicle.

This complete strut and coil spring assembly combines the damper and coil spring in one bolt-in unit, so there's no separate spring compression at install. Arnott's design converts the factory electronic (active) suspension to a passive setup, operating without any external commands from the vehicle.

  • Electronic-to-passive conversion: replaces the original active rear left unit with a self-contained passive strut.
  • Custom-valved dampers: internal settings tuned to mimic the stability, handling, control and comfort of the OE strut.
  • Pre-assembled: strut and coil spring ship together for convenient installation.
  • Engineered and assembled in the USA.

Arnott recommends replacing these struts in pairs for balanced ride and handling. Consult the vehicle service information for the correct fasteners and whether they may be reused.

Interchange: FL1418B063AC · FL1418B063AD · FL1Z18125B · FL1Z18125D

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

FL1418B063AC, FL1418B063AD, FL1Z18125B, FL1Z18125D

Frequently Asked Questions

What vehicles does the SK-3629 fit?

It's a direct-fit replacement for the 2015-2017 Ford Expedition and 2015-2017 Lincoln Navigator. Check the Buyer's Guide tab to confirm your specific vehicle.

What position does this strut assembly cover?

This is the rear left (driver's side rear) strut and coil spring assembly. Arnott recommends replacing struts in pairs for balanced ride and handling.

Does this convert the electronic suspension?

Yes. This unit converts the factory electronic (active) rear suspension to a passive setup, operating without any external commands from the vehicle.

Do I need to compress a spring to install it?

No. It ships as a pre-assembled coil-over strut with the damper and coil spring already combined in one bolt-in unit for convenient installation.

How does it compare to the original strut?

Arnott's custom-valved dampers use internal settings tuned to mimic the stability, handling, control and comfort of the OE strut. It is engineered and assembled in the USA.