Westar Suspension Coil Spring Seat P/N:ST-3978
Give the top of your rear coil spring a proper place to sit with the Westar Suspension Coil Spring Seat, MPN ST-7935. This rear upper spring seat is a direct-fit replacement for the listed applications: the 2007-2018 Ford Expedition, the 2007-2011 Ford Sport Utility, and the 2007-2021 Lincoln Navigator. See the "Vehicles it fits" section for engine details.
Westar aims to offer top-quality suspension components at a competitive price, using materials chosen specifically for each application.
The coil spring seat is the surface where the upper end of the rear coil spring rests, and it helps keep the spring located in the suspension. Signs that it may need replacing include noise from the rear suspension over bumps, a spring that looks shifted or out of position, and visible damage or wear on the seat. If a worn seat is the cause, ST-7935 replaces it. Inspect the spring and the related suspension parts at the same time.
Interchange: 707935 · SM5762 · 907935
This part cross-references / interchanges with the following part numbers:
What vehicles does the Westar ST-7935 fit?
It fits the 2007-2018 Ford Expedition, the 2007-2011 Ford Sport Utility, and the 2007-2021 Lincoln Navigator. See the "Vehicles it fits" section for engine details.
Where does this coil spring seat install?
It is the rear upper coil spring seat, which is where the top of the rear coil spring rests in the suspension.
What are signs of a worn coil spring seat?
Noise from the rear suspension over bumps, a coil spring that looks shifted, or visible damage to the seat may mean it needs replacing. Diagnose the cause before replacing parts.
Which part numbers does the ST-7935 interchange with?
The Westar ST-7935 interchanges with 707935, SM5762, and 907935.
Does this spring seat have a protective finish?
Yes. Westar applies a finish that improves the part's appearance and is designed to help extend its life.
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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.