Universal Trailer Coupler Lock
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MASTER LOCKUniversal Trailer Coupler Lock


Limited availability.
Only 1 in stock!
Model # 19764315 | Mfg # 389DATUPC # 71649263019


Universal Trailer Coupler Lock

Name Value
Compatibility 1 7/8 Inch Couplers
2 Inch Couplers
2 5/16 Inch Couplers
Material Steel
Type Coupler Lock

Product Overview

The Master Lock No. 389DAT features a universal trailer coupler lock, designed to fit most 1 7/8" (48 mm), 2" (51 mm) and, 2 5/16" (59 mm) couplers. The advanced locking mechanism provides resistance to picking and prying. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.


  • Universal trailer coupler lock fits most 1 7/8" (48 mm), 2" (51 mm) and 2 5/16" (59 mm) couplers
  • Guards against trailer tow-away theft
  • Advance locking mechanism resists picking and prying
  • Easy to install and remove
  • Resists rust and corrosion


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