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Feature Breakdown: Master Lock Trailer Coupler Lock Video

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Products Featured in this Video


Master Lock Trailer Coupler Lock - 1-7/8", 2" and 2-5/16" Ball Couplers


Master Lock Trailer Tongue Lock

908 reviews


Code: ML389DAT

Price:  $36.22
  • Trailer Tongue Lock
  • Surround Lock
  • Universal Application Lock
  • Keyed Unique
  • Fits 1-7/8 Inch Ball
  • Fits 2 Inch Ball
  • Fits 2-5/16 Inch Ball
  • Master Lock



Keep your trailer safe from towaway theft with this universal coupler lock. Its tough frame fits in and around most 1-7/8", 2", and 2-5/16" ball couplers; and it has a bright red color and heavy-duty construction to deter theft.


Do you have a question about part ML389DAT?more information >     


Review of Master Lock Locks ML389DAT


Today we're going to be taking a look at the Master Lock trailer coupler lock. This is a universal lock that's designed to fit most 1 and 7/8th inch, 2 inch, and 2 and 5/16th inch ball couplers. This is a heavy duty coupler lock that's going to deter trailer theft by preventing hookup. It's got a nice large size to it as well as the heavy weight. So it's going to defend against attempts to break… see more >