Details

• Brand:

  

  

• SKU:

  W717220-S300

• Other Names:

  Nut And Washer Assembly Castle

• Description:

  This is a genuine Ford under-cover retainer nut catalogued under specification W717220-S300, used to secure the lower radiator support splash shield and under-engine cover on the Mustang. Catalogued as an Under Cover Retainer Nut and radiator support splash shield nut, this fastener threads onto the studs along the front lower fascia and belly area, holding the aerodynamic shield and engine under-cover tight against the structure so they do not vibrate, sag, or tear away at highway speed. It plays a small but important role in airflow management and in keeping road debris and water from reaching engine bay components. Owners replace this nut when a shield has come loose, when a missing fastener has let a panel droop or drag, or when the original is stripped or lost during an oil change or front-end service. The Mustang application spans the 2.3L EcoBoost, 3.7L, and 5.0L Coyote configurations, since the lower shield hardware is shared across the model. Manufactured to Ford specifications, it provides the correct thread engagement and bearing surface for the shield studs and installs in the original location without modification. Tighten to the specified value and verify the shield is fully seated and aligned so it does not contact the road. Replacing worn retainers restores proper shield fit and keeps the under-body panels secure.

WARNING: California Proposition 65

×

California Proposition 65

WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov