10 Best Fifth Wheel Locks 2026 in the United States
#1
Winner
Fifth Wheel Lock Adjustment Tool
The BELA DOMO Fifth Wheel Lock Adjustment Tool is a sturdy iron tool designed specifically for professionals or truck owners who need to inspect and adjust the locking mechanism on fifth wheel couplings. Its iron build ensures durability, important for withstanding the tough conditions often found in commercial truck maintenance. Though the tool itself does not lock, it helps verify the lock’s performance by measuring the gap between lock jaws and the kingpin to ensure the connection is secure and within manufacturer tolerances. This feature is essential in preventing dangerous slack that could cause trailer disconnects or excessive wear.
#2
Ft. Knox Locks Andersen Ultimate Trailer 5th Wheel Lock with Trimax Puck Lock - Bolt Cutter & Crowbar Proof, Made in USA
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.
Rating
8.5
Material
Locking Mechanism
Ease of Use
Most important from
186 reviews
#3
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft for RVs, Container Trailers and Campers with Handles Warning Tag 3 Keys Black
The BOYISEN 5th Wheel King Pin Lock stands out due to its solid steel construction, which offers robust anti-theft protection for RVs, container trailers, and campers. This heavy-duty lock is designed with ease of use in mind, featuring a convenient handle and an outward-facing turn cylinder, making it simpler to lock and unlock.
Rating
7.9
Material
Locking Mechanism
Size and Fit
Most important from
3045 reviews
Top 10 Best Fifth Wheel Locks 2026 in the United States
#1
Winner
Fifth Wheel Lock Adjustment Tool
Fifth Wheel Lock Adjustment Tool
Material: Iron
Locking Mechanism: Push Button
Size and Fit: 27 x 9.5 x 5.5 inches
Ease of Use: Push Button locking and unlocking
Chosen by 1160 this week
Ft. Knox Locks Andersen Ultimate Trailer 5th Wheel Lock with Trimax Puck Lock - Bolt Cutter & Crowbar Proof, Made in USA
Ft. Knox Locks Andersen Ultimate Trailer 5th Wheel Lock with Trimax Puck Lock - Bolt Cutter & Crowbar Proof, Made in USA
Material: Steel
Locking Mechanism: Andersen Ultimate 5th Wheel
Size and Fit: 11.5 x 4.5 x 7 inches
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft for RVs, Container Trailers and Campers with Handles Warning Tag 3 Keys Black
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft for RVs, Container Trailers and Campers with Handles Warning Tag 3 Keys Black
Material: Solid steel
Locking Mechanism: Blossom lock
Size and Fit: Universal fit
Weather Resistance: Suitable for various weather
Ease of Use: Convenient handle, outward-facing cylinder
King Pin Lock LPCVR for Fifth Wheel - Heavy Duty Anti-Theft Kingpin Lock – Stainless Steel & Ductile Cast Iron by Amplock
King Pin Lock LPCVR for Fifth Wheel - Heavy Duty Anti-Theft Kingpin Lock – Stainless Steel & Ductile Cast Iron by Amplock
Material: Stainless Steel, Cast Iron
Locking Mechanism: Amplock with cylinder lock
Size and Fit: 7 x 6 x 8.5 inches
Ease of Use: push-and-lock system
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Ft. Knox Locks Andersen Ultimate Trailer 5th Wheel Lock Puck Lock Not Included - Bolt Cutter & Crowbar Proof, Made in USA
Ft. Knox Locks Andersen Ultimate Trailer 5th Wheel Lock Puck Lock Not Included - Bolt Cutter & Crowbar Proof, Made in USA
Material: Steel
Locking Mechanism: Coupler Lock, Hasp for puck locks
Size and Fit: Fits all Andersen Ultimate 5th Wheel
Weather Resistance: Powder coat finish
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock for RVs, Semi Trailers and Campers with Handles Warning Tag
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock for RVs, Semi Trailers and Campers with Handles Warning Tag
Material: Solid steel
Locking Mechanism: Outward-turning cylinder
Size and Fit: Universal fit
Weather Resistance: Withstands various weather conditions
Ease of Use: Handle for convenience
Ft. Knox Locks GenY Adapt 5th Wheel Trailer Coupler Lock with Trimax Puck Lock - Bolt Cutter & Crowbar Proof, Made in USA
Ft. Knox Locks GenY Adapt 5th Wheel Trailer Coupler Lock with Trimax Puck Lock - Bolt Cutter & Crowbar Proof, Made in USA
Material: 3/16" alloy steel
Locking Mechanism: Trimax puck lock
Size and Fit: 11.5 x 8 x 5 inches, snug fit
Weather Resistance: Yellow powder-coated, weather resistant
Ease of Use: Works with reliable Trimax puck lock
Trimax - TFW80HD - 5th Wheel King Pin Lock -Heavy Duty Anti-Theft Trailer Lock, Hardened Steel, Weatherproof, Full Collar Design, Secure Lock, Red
Trimax - TFW80HD - 5th Wheel King Pin Lock -Heavy Duty Anti-Theft Trailer Lock, Hardened Steel, Weatherproof, Full Collar Design, Secure Lock, Red
Material: Ultra-tough steel
Locking Mechanism: Easy push button lock
Size and Fit: 7.6 x 4.41 x 2.76 inches
Weather Resistance: Rugged weatherproof epoxy coat
Ease of Use: Quick hassle-free locking and unlocking
#10
Proven Industries Model PL-5 Fifth-Wheel Kingpin Lock, Heavy-Duty Coupler Lock, Made in the USA
Proven Industries Model PL-5 Fifth-Wheel Kingpin Lock, Heavy-Duty Coupler Lock, Made in the USA
Material: Solid-steel collar, 303 stainless-steel pin
Locking Mechanism: Key Lock
Size and Fit: Fits various fifth-wheel trailers
Ease of Use: Weight (4 pounds) might be cumbersome
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Buying Guide for the Best Fifth Wheel Locks
When it comes to securing your fifth-wheel trailer, choosing the right lock is crucial. A fifth-wheel lock is designed to prevent unauthorized towing of your trailer, providing peace of mind whether you're parked at a campsite or storing your trailer for the season. To make an informed decision, it's important to understand the key specifications and features that differentiate various fifth-wheel locks. This will help you select a lock that best fits your security needs and usage patterns.MaterialThe material of a fifth-wheel lock is important because it determines the lock's durability and resistance to tampering. Common materials include hardened steel and aluminum. Hardened steel is highly durable and resistant to cutting and drilling, making it a great choice for maximum security. Aluminum locks are lighter and may be easier to handle but might not offer the same level of protection. If you frequently travel through high-risk areas, a hardened steel lock is recommended. For general use, an aluminum lock may suffice.
Locking MechanismThe locking mechanism is the part of the lock that secures it in place. There are various types, including key locks, combination locks, and electronic locks. Key locks are straightforward and reliable, but you need to keep track of the key. Combination locks eliminate the need for a key but require you to remember a code. Electronic locks offer advanced security features but may require batteries. Choose a locking mechanism based on your preference for convenience and security. If you prefer simplicity, a key lock is a good choice. For added convenience, a combination or electronic lock might be better.
Size and FitThe size and fit of the lock are crucial to ensure it properly secures your fifth-wheel trailer. Locks come in various sizes to fit different king pin dimensions. It's important to measure your trailer's king pin and compare it with the lock's specifications to ensure a snug fit. A lock that is too loose can be easily tampered with, while one that is too tight may be difficult to install and remove. Make sure to choose a lock that matches your trailer's king pin size for optimal security.
Weather ResistanceWeather resistance is an important feature for a fifth-wheel lock, especially if you plan to use it in various climates. A weather-resistant lock will withstand rain, snow, and extreme temperatures without rusting or malfunctioning. Look for locks with protective coatings or those made from materials that resist corrosion. If you frequently travel or store your trailer in harsh weather conditions, a weather-resistant lock is essential to ensure long-term reliability and security.
Ease of UseEase of use refers to how simple it is to install, lock, and unlock the fifth-wheel lock. Some locks are designed with user-friendly features such as ergonomic handles or quick-release mechanisms. If you plan to frequently attach and detach the lock, look for one that offers easy operation. A lock that is difficult to use may discourage you from using it consistently, which can compromise your trailer's security. Choose a lock that you find easy to handle and operate to ensure you use it regularly.