Harbor Freight Tools


Universal Trailer Coupler Lock

Deter theft and protect your unattended trailer with this coupler lock

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Ensure that your trailer stays safe with this easy-to-use coupler lock. Made from corrosion-resistant aluminum with a steel lock bar, this trailer coupler lock deters theft and resists picking, prying, or drill-outs. Features eleven locking positions and comes with two keys.

  • Universal design fits 1-7/8 in., 2 in., and most 2-5/16 in. trailer couplers
  • Deters theft and resists picking, prying, or drill-outs
  • Eleven locking positions
  • Corrosion-resistant aluminum body with heavy duty steel lock bar

Important Information

  • The coupler needs to be in the unlocked position and the lock may need to be rotated 180° for correct fit.

Coupler/Ball Size
1-7/8 in., 2 in., and most 2-5/16 in.
Aluminum body, steel lock bar
Shipping Weight
1.56 lb.
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.