10 Best Fifth Wheel Locks 2026 in the United States

The Andersen Ultimate 5th Wheel Connection Lock is built with ultra-high security in mind, featuring a proprietary design that fits all versions of the Andersen Ultimate 5th Wheel connection. Its heavy-duty construction utilizes 3/16-inch fully welded cold rolled steel, making it highly resistant to bolt cutters and crowbars. The bright yellow powder coat finish serves as a deterrent to potential thieves.

The Trimax puck lock included is a hidden-shackle padlock designed to prevent theft, emphasizing the lock's security aspect. This product is particularly suitable for users looking to secure their fifth-wheel trailer with a robust and visible lock mechanism.

Its dimensions of 11.5 x 4.5 x 7 inches ensure compatibility with most fifth-wheel connections, and the steel construction guarantees durability and strength. The included components, such as the Trimax puck lock and two keys, add convenience and value to the purchase. If you need a sturdy and secure lock for your Andersen Ultimate 5th Wheel connection and prioritize security above all, this product is a worthy consideration.

The Andersen Ultimate 5th Wheel Connection Lock is designed for high security with its robust construction. Made from fully welded cold rolled steel, this lock is both bolt cutter and crowbar proof, ensuring it stands up to potential theft attempts. Its bright yellow powder coat finish not only provides a layer of weather resistance but also acts as a deterrent for thieves.

The lock fits all versions of the Andersen Ultimate 5th Wheel connection, including the new funnel and eye bolt applications, making it versatile for different setups. The use of a hasp that accepts most 'puck' style locks (though not included) adds an extra layer of security. However, at 18 pounds, it is relatively heavy, which might make it less portable.

Additionally, while the lock is highly secure, some users might find the need for a separate puck lock inconvenient. The bright yellow finish is excellent for visibility but may not appeal to those looking for a more discreet option. This lock is a solid choice for those needing heavy-duty protection and are willing to manage its weight and the requirement for an additional puck lock.

The AMPLock U-LPCVR Heavy Duty 5th Wheel Lock is a robust security solution for travel trailers. It's constructed from high-quality stainless steel and cast iron, making it extremely durable and resistant to tampering. The lock features a patented cylinder lock and a unique conical design that prevents traction with chains and modified hitches, enhancing security when your trailer is unhitched.

Weighing in at 10 pounds, it acts as a significant deterrent to theft through cutting or other tampering methods. The lock is designed for easy use with a push-and-lock system that simplifies installation and removal, which is handy for frequent use. The product dimensions (7 x 6 x 8.5 inches) suggest it should be compatible with most fifth wheel setups, although checking specific compatibility is recommended.

One drawback could be its weight, which might make it cumbersome for some users to handle. Additionally, while it is highly resistant and durable, there's no specific mention of weather resistance, which might be a consideration for outdoor storage. With a strong customer rating of 4.6 out of 5 stars, it is well-regarded for its reliability and security. This lock is particularly suitable for those needing heavy-duty protection for commercial trailers and semi-trailers.