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Your cart is empty.The Master Lock 377KA Trailer Hitch Lock features a trailer coupler lock, designed to fit 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers. The advanced locking mechanism provides resistance to picking and prying..
Richard Williams
2025-08-29 17:15:26
Bought my first one 15 years ago and it still works great, you can push it shut in a ratching fashion without even having the key in it. Fits trailers with 1 7/8" , 2" and 2 5/16" ball socket. Bought another for a second trailer. The design would make it difficult to pry it saw off. Much better than the u-bolt over the top design which only locks on one side and could be sawed quickly with a saws all of pryed in the non-locking side. For extra security use one of these and a lock through the latch and it isn't going anywhere.
Twiggy
2025-08-08 13:20:00
This was a perfect buy. Love it and feel a bit safer with it.
Hankenstein
2025-07-31 20:59:28
Use this on my boat trailer
Donnie
2025-07-30 16:03:01
Easy to use great easy to use
Clan Bacon
2025-06-16 19:52:54
As others have stated, this is a good lock that fits most trailer hitches. Master has switched from a stainless steel to aluminum housing for this lock which does make it a little lighter in weight and does limit the potential for corrosion (although the older one we have had for 20-ish years is still not corroded). Good lock for the money to protect a much larger investment.
Ryan
2025-05-18 16:23:16
Great lock easy to use. Fast to install. Very happy with this product
Marilyn S Kincaid
2025-05-10 14:04:15
Just what the hubby wanted but I don't know anything about this product.
David
2025-04-16 16:32:27
Very good and strong lock
Rick S.
2025-02-09 18:11:06
Works well, decent weight to it. Won't cut through it too quickly. Fits the trailer hitch well and gives the hitch cover a place to go when a trailer is on.
E H
2025-01-07 09:43:55
Muy buen producto quedo perfecto en mi remolque y la entrega súper puntual.
Bushra
2024-12-25 12:04:08
مثل المتوقع شكرا لكم
Stuart Serediuk
2024-12-19 14:47:30
The quality is of what I expected from a master lock. Sturdy and the locking mechanism is smooth.
Brian E Duguay
2024-12-14 17:40:28
Does the job and easy to use.
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