Details

• Brand:

  

  

• SKU:

  W520833-S439

• Positions: Right Outer, Right Rear, Left Outer, Left Rear
• Other Names:

  Rear Bracket Nut, Support Nut, Bumper U-Nut, Center Reinforced U-Nut, Outer Reinforced U-Nut, Support Bracket U-Nut, Water Valve Screw, Auxiliary Cooler Nut, Trans Cooler Nut, Rear Bracket Retainer Nut, Running Board Nut, Bumper Face Bar Nut, Bumper Face Bar Reinforcement Beam Nut, Mount Bracket Retainer Nut, Battery Tray U-Nut, ABS Hydraulic Assembly Nut, Auxiliary Pump Nut, Cooler Nut, Oil Cooler U-Nut, Valve Assembly Nut, Nut Spring

• Description:

  This is a genuine Ford mount bracket retainer nut, catalogued for a wide range of Ford vehicles built across the 09-20 production window. It is the threaded retaining nut that secures running board and lower body mount brackets to the underbody, holding the bracket firmly against the rocker or frame rail so the step bar or trim assembly stays rigid under foot load. The nut threads onto a captive stud or bolt and provides the clamp load that keeps the bracket from loosening over rough roads. Owners reach for this nut when a running board has begun to sag, rattle, or shift because the original retainer backed off, stripped, or corroded, or when a mount bracket is being replaced and fresh hardware is needed to restore the factory torque. Because it is a load-bearing fastener at an exposed underbody location, it is commonly serviced together with the bracket and any spacer washers to rebuild the joint correctly. Manufactured to Ford specifications, it matches the original thread pitch and seat so it installs in the original position without modification. Always confirm the mating bolt or stud is clean and undamaged before threading on a new nut, and torque the joint to the value listed in the applicable body or running board service section. Inspect the bracket and rocker mounting points for corrosion while the hardware is off, since a weak mounting surface will quickly loosen even a correctly torqued nut.

• Notes: Included with running board assembly.
• Replaces:

  N800538S2

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