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Master Lock® Coupler Lock

Item # WX2-83745

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Master Lock® Coupler Locks provide reliable theft protection for your unattended trailer.

Install one and rest easy... these babies make it almost impossible for anyone to drive off with your trailer while you're away. Fits on front of trailer coupler to prevent hitch ball access. Rugged, die-cast zinc body resists corrosion. 4-pin cylinder tumbler.

State Size, as available in the Shopping Cart. 

Size 33:

  • Fits: Acme, Big Boy, Fulton, Hammer Blow, Ideal and Lainson 1 7/8" couplers
Size 34:
  • Fits: Valley 1 7/8" couplers, Acme, Big Boy, Fulton, Dico, Ideal, Lainson and Valley 2" couplers
Size 35:
  • Fits: Marvel MC-683, MC-883, MC-939, MC-970, Lainson 2" and 2 5/16" couplers
Size 36:
  • Fits: Fulton 33-305, 34-300, 34-308, Valley 5125, 5135, 5136
Size 39:
  • Fits: Hammer Blow 1B, 2B, Lainson 76

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