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Master Lock 2-5/16" Trailer Coupler Lock

378DAT

Quantity in Cart: None
Code: 378DAT
Price: $39.95
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Shipping Weight: 5 pounds
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Master Lock 2-5/16 Inch Trailer Coupler Lock Review - Video

Trailer Coupler Lock Guards against trailer towaway theft.

  • Fits 2-5/16" (48 mm) ball diameter couplers of the following brands:
    • Atwood
      • Will not fit Flat Nose style couplers
    • Reese
    • Fulton
    • Shelby
    • Valley
    • Dutton-Lainson
    • Putnam
    • Acme
    • Ideal
  • Advanced Locking Mechanism Resists Picking and Prying
  • Easy to Install and Remove
  • Lifetime Guarantee

Lock can be keyed alike so that the same key will work on multiple 378DAT locks. Simply select the keyed alike option above and then enter the number of locks needed.

Note: Cannot key the locks to match other styles of locks. Keyed alike option will only match other 378DAT locks.


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If you need help selecting a product or have questions, you can contact our Customer Service Team at 1-800-298-8924.

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