5 Best Bulldog Hitch Locks 2025 in the United States

The Bulldog Round Gooseneck Coupler is designed with heavy-duty construction, offering exceptional durability and strength for reliable performance in tough conditions. Its precision connection feature, using a self-centering locking plate, ensures a secure attachment even with minor misalignments, adding an extra layer of safety.

The tight ball fit minimizes jarring during towing, providing a smoother ride on rough roads and during speed changes, which can be particularly beneficial for frequent travelers or those towing heavy loads. The easy-grip locking handle allows for convenient operation from any angle, even when wearing gloves, making it user-friendly and accessible.

The product dimensions of 28.5 x 9 x 8 inches and weight of 46.7 pounds indicate that it is quite substantial and sturdy, potentially requiring careful handling during installation. Its compatibility with various trailer coupler parts and the lack of discontinuation by the manufacturer suggest that it will be a reliable investment for a long period.

The Collar Trailer Hitch Lock is a robust solution for protecting trailers from theft and unauthorized use. Made from heavy-duty stainless steel, it is designed to resist cutting, grinding, and harsh weather conditions, making it highly durable. Its compatibility with all Bulldog and Ram latch styles adds to its versatility, ensuring it fits a broad range of couplers.

The product dimensions are 8 x 5 x 1.5 inches and it weighs 1.25 pounds, which suggests it is relatively compact and lightweight, enhancing its ease of use during installation and removal. Made in the U.S.A, it assures quality and reliability. It ranks #531,087 in Automotive, which might suggest limited visibility or popularity in the market.

While the stainless steel construction is a major strength, it might also make the lock relatively more expensive compared to those made from less durable materials. Despite these points, the Collar Trailer Hitch Lock remains a strong contender for those seeking a reliable and durable hitch lock for their Bulldog-style couplers.

The Bulldog (580402) Stainless Steel Dogbone Receiver Lock is a sturdy and reliable hitch lock designed to fit 2-inch Class III and Class IV receivers. Made from stainless steel, it offers excellent break resistance, ensuring your trailer or equipment is securely fastened. The dual self-locking design adds an extra layer of security, making it a robust choice for those needing a dependable hitch lock.

The high-security square key design is more resistant to picking compared to traditional keys, which is a significant advantage for those concerned about theft. Additionally, the lock includes a dust cap to protect the keyway from dirt and debris, enhancing its durability in various weather conditions. However, it's worth noting that while it is resistant to weather, some users have mentioned that the lock can become a bit stiff over time, potentially requiring some maintenance.

The lock's dimensions (8.5 x 1.5 x 4 inches) and weight (2.56 ounces) make it a compact and lightweight option, which is convenient for frequent use. Despite being discontinued by the manufacturer, the product still garners a solid reputation with a customer rating of 4.1 out of 5 stars from 91 reviews, indicating general satisfaction. Its best seller rank is relatively low in the automotive category, which might suggest limited popularity or niche usage. The Bulldog (580402) Receiver Lock is well-suited for users who need a durable, weather-resistant lock with high-security features, though it may require occasional upkeep to maintain smooth operation.