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10 Best Fifth Wheel Locks 2026 in the United States
#1
Winner
GenY Adapt 5th Wheel Lock (GenY Adapt 5th Wheel Lock W/Trimax Puck Lock)
The GenY Adapt 5th Wheel Lock is built to provide strong security for 5th wheel trailer connections, especially the GenY Executive 5th Wheel hitch. Made from 3/16" alloy steel with fully welded construction, it’s designed to resist common break-in attempts like bolt cutters and crowbars, making it a tough physical barrier. Its bright yellow powder-coated finish is not only weather resistant but also acts as a visible deterrent to potential thieves. The lock encloses the trailer coupler, offering a snug fit to prevent tampering.
Rating
10.0
Chosen by1,111
Material
Locking Mechanism
Size and Fit
Most important from
8 reviews
#2
WAR-LOK TKP-10 5th Wheel King Pin Lock, Anti-Theft Trailer, Heavy Duty Steel
The WAR-LOK TKP-10 5th Wheel King Pin Lock is a robust option for securing fifth-wheel trailers, especially those left untethered. Constructed from durable cast steel, it offers a formidable barrier against theft. The solid steel construction makes it nearly impenetrable, deterring any thief attempting to access your trailer. It uses a key lock system with rotating disk lock technology, which enhances its security by making it difficult to pick. For users worried about losing keys, the manufacturer offers a replacement service if the key is registered.
Rating
8.8
Material
Locking Mechanism
Size and Fit
Most important from
222 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
8.5
Material
Locking Mechanism
Size and Fit
Most important from
2992 reviews
Top 10 Best Fifth Wheel Locks 2026 in the United States
#1
Winner
GenY Adapt 5th Wheel Lock (GenY Adapt 5th Wheel Lock W/Trimax Puck Lock)
GenY Adapt 5th Wheel Lock (GenY Adapt 5th Wheel Lock W/Trimax Puck Lock)
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
Chosen by 1111 this week
WAR-LOK TKP-10 5th Wheel King Pin Lock, Anti-Theft Trailer, Heavy Duty Steel
WAR-LOK TKP-10 5th Wheel King Pin Lock, Anti-Theft Trailer, Heavy Duty Steel
Material: Steel
Locking Mechanism: Key Lock with rotating disk
Size and Fit: 12 x 9 x 2.875 inches
Ease of Use: Convenient handle
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
Andersen Ultimate 5th Wheel Conversion Coupler Lock
Andersen Ultimate 5th Wheel Conversion Coupler Lock
Material: Steel
Locking Mechanism: Andersen Ultimate 5th Wheel
Size and Fit: 11.5 x 4.5 x 7 inches
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
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Up to 14% off
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
Andersen Ultimate 5th Wheel Connection Lock W/O a Puck Lock
Andersen Ultimate 5th Wheel Connection Lock W/O a Puck Lock
Material: Steel
Locking Mechanism: Coupler Lock, Hasp for puck locks
Size and Fit: Fits all Andersen Ultimate 5th Wheel
Weather Resistance: Powder coat finish
CURT 16515 E16 5th Wheel Hitch Head Only, Legs or Roller Required, 16,000 lbs
CURT 16515 E16 5th Wheel Hitch Head Only, Legs or Roller Required, 16,000 lbs
Material: carbide
Locking Mechanism: automatic locking system
Size and Fit: fairly standard
Weather Resistance: powder-coated finish
Ease of Use: auto-lock and anti-rattle features
AMPLock - U-LPCVR 1-Cylinder Heavy Duty King Pin Lock for Semi-Trailer and 5th Wheel - Anti Theft Trailer Hitch Lock, Patented Keyed Alike Commercial & Travel Trailer Hitch Locks with Keys
AMPLock - U-LPCVR 1-Cylinder Heavy Duty King Pin Lock for Semi-Trailer and 5th Wheel - Anti Theft Trailer Hitch Lock, Patented Keyed Alike Commercial & Travel Trailer Hitch Locks with Keys
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
#10
AMPLock - U-LPCF Heavy Duty Trailer Kingpin Lock, Patented Cylinder Lock, Commercial Trailer Security Conical King Pin Lock, Reliable Heavy Duty Kingpin Lock for Enhanced Trailer Protection & Security
AMPLock - U-LPCF Heavy Duty Trailer Kingpin Lock, Patented Cylinder Lock, Commercial Trailer Security Conical King Pin Lock, Reliable Heavy Duty Kingpin Lock for Enhanced Trailer Protection & Security
Material: Stainless Steel
Locking Mechanism: Key Lock
Size and Fit: 7 x 6 x 8.5 inches; fits kingpins
Weather Resistance: Weather Resistant
Ease of Use: Patented push-and-lock system
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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.