Shop Master Lock 379DAT trailer coupler lock with universal fit for 1-7/8in, 2in and most 2-5/16in couplers. Helps deter trailer theft and resists corrosion.
124 in stock
124 in stock
The Master Lock 379DAT Universal Trailer Coupler Lock is designed to secure unattended trailers by blocking access to the coupler and preventing unauthorized hookup. Its universal-fit design accommodates 1-7/8 inch, 2 inch, and most 2-5/16 inch trailer couplers, making it suitable for utility, boat, cargo, and equipment trailers. The laminated riveted steel body provides added strength, while the advanced locking mechanism helps resist picking and prying. || The adjustable center section fits a wide range of coupler styles, including straight lip, rolled lip, surge brake, and hydraulic couplers. An integrated weather-resistant keyway cover helps protect internal components from dirt and moisture, making it suitable for outdoor storage and towing environments. || Finished in a corrosion-resistant silver coating, the 379DAT includes two keys and installs quickly without special tools. Backed by Master Lock’s Limited Lifetime Warranty, it offers a visible theft deterrent for trailers stored at job sites, marinas, campgrounds, and residential properties.
| Brand | Master Lock |
|---|---|
| Model | 379DAT |
| MPN | 379DAT |
| Product Type | Trailer Coupler Lock |
| Material | Laminated Steel |
| Finish Color | Silver |
| Dimensions | 7.5 x 6.56 x 2.68 in |
| Weight (lb) | 1 lb |
| Load Capacity | Not Published |
| Drawer Count | Not Published |
| Drawer Type | Not Published |
| Lock Type | Keyed Different |
| Mount Type | Coupler Mounted |
| Installation | Tool-Free |
| Compatibility | 1-7/8in-2-5/16in Couplers |
| Use Case | Trailer security |
| Warranty | Limited lifetime |
| Country of Origin | Not Published |
| Series | Universal Lock |
| UPC | 71649116162 |
Deliver in 3-5 business days
30 days return policy
Secure Payment at checkout
We are always here.
© 2026 Sports and Wheels
Reviews
There are no reviews yet.