Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock for Securing RV’s, Horse Trailers, Tool Trailers and More, 379ATPY
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4.6
(6,010 reviews)
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About this product
The Master Lock 379ATPY features a universal trailer coupler lock, designed to fit 1-7/8 in. (48 mm), 2 in. (51 mm) and most 2-5/16 in. (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.Price History
- Best price now: $35.99 at Amazon — the lowest price we've recorded.
- Lowest recorded: $35.99 at Amazon on Oct 12, 2026
- Highest recorded: $40.65 at Amazon on Aug 22, 2026
- Tracked since Jun 25, 2026 across 2 retailers (11 price checks)
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