Details

• Brand:

  

  

• SKU:

  W520415-S442

• Positions: Left Upper, Right Upper, Lower Upper
• Other Names:

  Knuckle Nut, Upper Mount Nut, Mount Bracket Nut, Trans Mount Nut, Wheel Bearing Nut, Reinforced Plate Nut, Nut

• Description:

  This is a genuine Ford standardized service nut carrying the W520415-S442 service number, an M12 by 1.75 hex nut on the HN1 base most often cataloged as an automatic or manual transmission mount nut. Depending on the catalog you will also see it listed against a control arm, a steering knuckle or a wheel bearing. Real applications that share this exact service number include the Ford Escape, Fusion and F-350 Super Duty along with the Lincoln MKC and MKZ and the C-Max, and it appears on other bodies because Ford consolidates common threaded hardware under one number. This is a single-use fastener that Ford specifies cannot be reused or reinstalled once loosened, and a fresh one should be fitted on reassembly. A mount or suspension nut like this that is loose, missing or reused past its clamp load lets the transmission mount or joint shift, which can present as a clunk on shifts, a vibration, alignment that drifts or a driveline that moves more than it should. Because one service number is listed against many model years and configurations, confirm the exact fit for your vehicle against your VIN before ordering so the thread size matches the stud you are servicing.

• Notes: Part cannot be reused/reinstalled.

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