--- product_id: 7757161 title: "Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA" price: "AED 211" currency: AED in_stock: true reviews_count: 13 url: https://www.desertcart.ae/products/7757161-master-lock-trailer-hitch-lock-fits-1-7-8-in store_origin: AE region: United Arab Emirates --- # Fits 3 common trailer coupler sizes Weather-resistant aluminum finish Advanced pick & pry resistant lock Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA **Price:** AED 211 **Availability:** βœ… In Stock ## Summary > πŸ” Lock in your trailer’s safety and never look back! ## Quick Answers - **What is this?** Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA - **How much does it cost?** AED 211 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/7757161-master-lock-trailer-hitch-lock-fits-1-7-8-in) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Next-Level Security:** Advanced locking mechanism engineered to resist picking and prying attempts. - β€’ **Trusted Peace of Mind:** Backed by Master Lock’s Limited Lifetime Warranty β€” security you can count on. - β€’ **Built to Brave the Elements:** Durable aluminum diecast finish ensures rust and corrosion resistance season after season. - β€’ **Effortless Installation & Removal:** Designed for quick, hassle-free use so you can lock up and hit the road faster. - β€’ **Universal Fit for Ultimate Versatility:** Secure your trailer with one lock that fits 1-7/8", 2", and most 2-5/16" couplers. ## Overview The Master Lock 377KA Trailer Hitch Lock offers a secure, weather-resistant solution compatible with 1-7/8", 2", and most 2-5/16" trailer couplers. Featuring an advanced locking mechanism that resists picking and prying, this aluminum diecast lock combines durability with ease of use. Trusted by thousands and backed by a Limited Lifetime Warranty, it’s the smart choice for protecting your trailer investment. ## Description The Master Lock No. 377KA features a trailer coupler lock, designed to fit 1-7/8 inch (48mm), 2 inch (51mm) and most 2-5/16 inch (59mm) trailer 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. ## Features - Fits 1-7/8 inch (48mm), 2 inch (51mm) and most 2-5/16 inch (59mm) trailer couplers - Advanced locking mechanism resists picking and prying - Easy to install and remove - Aluminum diecast finish resists rust and corrosion - Limited Lifetime Warranty provides peace of mind from a brand you can trust. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B001HATY36 | | Best Sellers Rank | #31,168 in Automotive (See Top 100 in Automotive) #70 in Towing Hitch Locks | | Brand | Master Lock | | Customer Reviews | 4.6 4.6 out of 5 stars (3,652) 4.6 out of 5 stars | | Date First Available | October 3, 2008 | | Item Model Number | 377KA | | Item Weight | 1.83 pounds | | Manufacturer | Master Lock | | Manufacturer Part Number | 377KA | | Model | Trailer Hitch Lock | | Product Dimensions | 5.6 x 4.3 x 2.8 inches | | Special Features | Weather Resistant | ## Images ![Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA - Image 1](https://m.media-amazon.com/images/I/51fclfwUssL.jpg) ![Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA - Image 2](https://m.media-amazon.com/images/I/51KcPMyCWXL.jpg) ![Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA - Image 3](https://m.media-amazon.com/images/I/51YirndBv2L.jpg) ![Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA - Image 4](https://m.media-amazon.com/images/I/51cvLErM-jL.jpg) ![Master Lock Trailer Hitch Lock, Fits 1-7/8 in., 2 in., and Most 2-5/16 in. Trailer Couplers, Weather Resistant Automotive Hitch Lock with Keys, 377KA - Image 5](https://m.media-amazon.com/images/I/51que3G4fOL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product *by on Reviewed in the United States April 21, 2026* I have used this for several years now and highly recommend. Great, especially for storage. ### ⭐⭐⭐⭐⭐ Good Lock ! *by on Reviewed in the United States March 24, 2026* first lock came without keys. Company sent a new one out, had it in a couple days. No problems , all working good. ### ⭐⭐⭐⭐⭐ Easy to use, secure and very sturdy. *by on Reviewed in the United States October 28, 2019* 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. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/7757161-master-lock-trailer-hitch-lock-fits-1-7-8-in](https://www.desertcart.ae/products/7757161-master-lock-trailer-hitch-lock-fits-1-7-8-in) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-08-22*