--- product_id: 177740000 title: "Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square)" brand: "proven industries" price: "VT118718" currency: VUV in_stock: true reviews_count: 13 category: "Proven Industries" url: https://www.desertcart.vu/products/177740000-proven-industries-model-2178-trailer-lock-fits-2-inch-trailer store_origin: VU region: Vanuatu --- # Hardened steel lock body Pick-proof unique key design Power tool & hammer resistant Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) **Brand:** proven industries **Price:** VT118718 **Availability:** ✅ In Stock ## Summary > 🔐 Lock in peace of mind — because your trailer deserves the best. ## Quick Answers - **What is this?** Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) by proven industries - **How much does it cost?** VT118718 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/177740000-proven-industries-model-2178-trailer-lock-fits-2-inch-trailer) ## Best For - proven industries enthusiasts ## Why This Product - Trusted proven industries brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unbreakable Security:** Hardened steel construction resists crowbars, hammers, and power tools for ultimate trailer protection. - • **Pick-Proof Key System:** Innovative interior locking mechanism and unique key design prevent lock picking and unauthorized key duplication. - • **Proudly Made in the USA:** Crafted with precision and quality control from concept to fabrication, supporting American manufacturing. - • **Weather-Resistant Durability:** Built to withstand harsh outdoor conditions, ensuring long-lasting security wherever you park. - • **Precision Fit for 2-Inch Couplers:** Custom-designed to securely lock select 2-inch trailer couplers and standard S-hook safety chains. ## Overview The Proven Industries Model 2178 Trailer Lock is a heavy-duty, weather-resistant security device designed specifically for select 2-inch trailer couplers. Featuring a hardened steel body and a unique pick-proof key system, it offers superior protection against theft and tampering. Engineered to secure both the coupler and standard S-hook safety chains, this lock is manufactured in the USA to ensure top-tier quality and durability. ## Description desertcart.com: Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) : Automotive Review: Premium Protection for Your Trailer - ’m very impressed with this Proven Industries lock. The build quality is outstanding—heavy-duty, solid, and clearly designed to last. It fits my 2-inch coupler perfectly and gives me real peace of mind when leaving my trailer unattended. The machining and finish are top-notch, and you can immediately feel that it’s a premium product compared to cheaper alternatives. Installation is simple, the fit is tight, and the overall design shows that the company knows what they’re doing when it comes to security. Definitely worth the investment. I highly recommend it. Review: Best Trailer Lock on the Market – Built Like a Tank - This is hands-down the best trailer lock I've ever owned. The Model 2178 from Proven Industries is an absolute beast. You can tell right out of the box that it's made with serious craftsmanship — heavy-duty metal, tight tolerances, and a snug fit on the coupler. It fits my trailer perfectly and installs in seconds. I especially appreciate the high-security Cobra 7 lock core, which offers peace of mind knowing it’s not a cheap lock someone could pick or duplicate easily. What really impressed me is how well it secures the entire coupler area — it’s not just a visual deterrent, it’s physically built to stop theft. I’ve used other locks before, but they always felt like "better than nothing" solutions. The 2178 feels like a fortress. Worth every penny for the peace of mind it brings. Highly recommended if you’re serious about protecting your investment. ## Features - HEAVY-DUTY TRAILER LOCK: It’s important to do everything you can to protect your belongings and your trailer or camper from being stolen. Our strong coupler lock fits select 2-inch trailer couplers to help keep your trailer secure. - TOUGH LOCK: The locking parts on this device are constructed from hardened steel for increased security, and the exterior cover is tough enough to stop burglars from using power tools, hammers, and crowbars on your lock. - UNIQUE KEY DESIGN: Our trailer lock has a special key design that prevents anyone from picking the lock. This innovative key system also features an interior locking mechanism that stops would-be thieves from making a copy of your key. - CUSTOM TRAILER-COUPLER LOCK: This custom-tailored lock will only mount on very specific 2-inch couplers. Make sure to check the coupler sizes that are compatible with our lock hardware to ensure that the lock you select matches your trailer coupler. - PROVEN INDUSTRIES: We are dedicated to providing our customers with the most effective trailer locks on the market. We carefully research and manufacture our locking systems from conception to fabrication in the USA. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0G8TXSVP1 | | Additional Features | Weather Resistant | | Best Sellers Rank | #43,013 in Automotive ( See Top 100 in Automotive ) #117 in Towing Hitch Locks | | Brand Name | Proven Industries | | Color | Black-Square | | Customer Reviews | 4.7 4.7 out of 5 stars (763) | | Included Components | inner slide, exterior shield, puck lock | | Item Dimensions | 8.6 x 7.58 x 5.13 inches | | Item Weight | 13.6 Pounds | | Lock Type | Disc-Detainer | | Manufacturer | Proven Industries, Inc | | Manufacturer Part Number | 2178 | | Material Type | Alloy Steel | | Model Name | 2178 | | Model Number | 2 | | Number of Pieces | 1 | | Recommended Uses For Product | Trailers, RVs, Safety Chains | | Style Name | Traditional | | UPC | 810104184311 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Proven Industries - **Item dimensions L x W x H:** 8.6 x 7.58 x 5.13 inches - **Lock Type:** Disc-Detainer - **Material:** Alloy Steel - **Special Feature:** Weather Resistant ## Images ![Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) - Image 1](https://m.media-amazon.com/images/I/81eQ70SwHTL.jpg) ![Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) - Image 2](https://m.media-amazon.com/images/I/71Dr3ZLZ2lL.jpg) ![Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) - Image 3](https://m.media-amazon.com/images/I/71n3B-87YZL.jpg) ![Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) - Image 4](https://m.media-amazon.com/images/I/714MZ+URWKL.jpg) ![Proven Industries Model 2178 Trailer Lock, Fits 2-Inch Trailer Couplers, Made in The USA (Black-Square) - Image 5](https://m.media-amazon.com/images/I/716AgP1oYIL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Premium Protection for Your Trailer *by M***Z on November 30, 2025* ’m very impressed with this Proven Industries lock. The build quality is outstanding—heavy-duty, solid, and clearly designed to last. It fits my 2-inch coupler perfectly and gives me real peace of mind when leaving my trailer unattended. The machining and finish are top-notch, and you can immediately feel that it’s a premium product compared to cheaper alternatives. Installation is simple, the fit is tight, and the overall design shows that the company knows what they’re doing when it comes to security. Definitely worth the investment. I highly recommend it. ### ⭐⭐⭐⭐⭐ Best Trailer Lock on the Market – Built Like a Tank *by M***A on June 5, 2025* This is hands-down the best trailer lock I've ever owned. The Model 2178 from Proven Industries is an absolute beast. You can tell right out of the box that it's made with serious craftsmanship — heavy-duty metal, tight tolerances, and a snug fit on the coupler. It fits my trailer perfectly and installs in seconds. I especially appreciate the high-security Cobra 7 lock core, which offers peace of mind knowing it’s not a cheap lock someone could pick or duplicate easily. What really impressed me is how well it secures the entire coupler area — it’s not just a visual deterrent, it’s physically built to stop theft. I’ve used other locks before, but they always felt like "better than nothing" solutions. The 2178 feels like a fortress. Worth every penny for the peace of mind it brings. Highly recommended if you’re serious about protecting your investment. ### ⭐⭐⭐⭐⭐ Understand your application and the Proven Industries product line before you order *by T***M on December 6, 2023* The Proven Industries Model 2178 trailer coupler lock is a very well made. The welding, weight, fit, and finish were all top shelf in the example that I received. Although any lock system can be defeated with the correct tools and time, the Proven system is very robust and introduces a level of security not found in many less expensive competitors. This said, the 2" Model 2178 that I ordered through Amazon did not fit my particular application. The locking latch on my 2" hitch is equipped with an external yoke that slides over the ball receiver in the locked position. I contacted Proven Support and learned that they manufacture a Model 2178-A that is designed for my application. Proven Support did not reply to my phone call, and their chat line was initially slow to respond. However, once we made contact through chat, I found them very responsive and helpful. The fault in the product that I received from Amazon was my own. Proven Support was very helpful in getting my mistake resolved and in offering and exchange, free of restocking fees, with immediate shipment. I am awaiting receipt of Model 2178-A. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/177740000-proven-industries-model-2178-trailer-lock-fits-2-inch-trailer](https://www.desertcart.vu/products/177740000-proven-industries-model-2178-trailer-lock-fits-2-inch-trailer) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-02*