Best Value
Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock for Securing RV’s, Horse Trailers, Tool Trailers and More, 379ATPY
Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers Trailer lock is best used for vehicles, trailers, and RVs
Where to buy
Current$40.42
90 days low$40.42
90 days high$40.42
Average$40.42
Current price is near its 90 days low — this is a good time to buy.
(Price history still building — check back in a few weeks for a fuller chart.)
Key features
- Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers
- Trailer lock is best used for vehicles, trailers, and RVs
- Trailer coupler lock features advanced locking mechanism to resist picking and prying
- Trailer hitch lock is constructed from zinc to resist rust and corrosion
- Includes one trailer coupler lock, two keys
About this product
The Master Lock Black Universal Size Trailer Hitch Lock is an indispensable accessory for RV owners looking to enhance their vehicle's security. Designed to fit a wide range of trailer couplers, including 1-7/8 in., 2 in., and most 2-5/16 in. sizes, this versatile lock provides peace of mind whether you're parked at a campsite or leaving your trailer unattended. With its advanced locking mechanism, the lock effectively resists picking and prying, ensuring that your RV, horse trailer, or tool trailer remains secure against theft. Constructed from durable zinc, it is also resistant to rust and corrosion, making it ideal for outdoor conditions. Picture yourself on an RV trip, confidently leaving your trailer attached while you explore a national park, or securing your horse trailer during a weekend competition. With two keys included, this trailer coupler lock offers both convenience and robust security, making it a must-have for any serious RV enthusiast.
Frequently asked questions
Leave the Noise Behind.
Reconnect Outdoors.
Our mission is to help people make well-informed RV buying decisions, so they can leave the noise and screens behind, reconnect with family, and create unforgettable memories in the great outdoors.
Free tools. No sales pressure. Just better decisions.