Home / Product Review / Product Review: Master Lock 379DAT Universal Trailer Coupler Lock

Product Review: Master Lock 379DAT Universal Trailer Coupler Lock

Screen Shot 2015-06-09 at 8.40.30 AM*Disclosure: I did receive product to facilitate my review. These opinions are my own and were in no way influenced by another person.

If you do any summer travels with a trailer of any kind, then you might appreciate this product review! *This also might be a great Father’s Day gift idea!!

Master Lock 379DAT Universal Trailer Coupler Lock: A trailer lock that combines durability to resist rust and corrosion with an advanced locking mechanism to resist picking and prying.

Product details: The Master Lock No. 379DAT features a universal trailer coupler lock, designed to fit 1-7/8in (48mm), 2in (51mm) and most 2-5/16in (59mm) 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.

Where to purchase?

You can purchase the Master Lock 379DAT Universal Trailer Coupler Lock on the Master Lock site OR on Amazon where it is on sale right now for $21.30!


Product Features

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


Our thoughts? My hubby was really excited to check out this trailer lock! We are big Master Lock fans and one thing that I love about their products is that they back them up. This lock has limited lifetime warranty which is just one of the reasons that we trust this brand so much. This lock is WAY less expensive than the ones that they try to sell you at the trailer dealerships, and it is also nice that it fits a wide variety of trailer sizes. This lock is easy to attach and will protect your trailer from being hauled off and it’s really easy to tuck in for your travels because it is so compact!


Meet the author – Keri Lyn

The creative and frugal mind behind She Saved for over 12 years now, Keri Lyn shares her adventures in parenting along with her love for family travel, country living and brand marketing. A self-proclaimed “brand loyalist”, Keri Lyn is known for her strong and enthusiastic voice when it comes to the products and brands that she loves. She Saved has become a community for like-minded consumers who appreciate saving money, time and sanity by getting the best deals on quality products and experiences.

Find Out More About Me

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *