We use cookies to enhance the security, performance, functionality and for analytical and promotional activities. We use cookies to personalize ads for you. By continuing to browse this site you're agreeing to our Privacy PolicyWe use cookies to enhance your experience and personalize ads. By using the site, you agree to that. Privacy Policy

10 bestBoat Trailer Lockof July 2025

112M consumers helped this year.

1

Rhino USA Trailer Hitch Coupler Lock Kit (Includes 2" & 1/4" Couplers) Heavy Duty Anti-Theft Tongue Locks for Boat, RV, Travel Trailers & More - Reinforced Solid Steel for Ultimate Peace of Mind!
Rhino USA Trailer Hitch Coupler Lock Kit (Includes 2" & 1/4" Couplers) Heavy Duty Anti-Theft Tongue Locks for Boat, RV, Travel Trailers & More - Reinforced Solid Steel for Ultimate Peace of Mind!

Rhino USA

Editor’s Choice

9.9

View Product
Buy it on Amazon

2

PEAKTOW PTS0002 Heavy Duty Universal Adjustable Coupler Lock Trailer Hitch Storage Security Lock Fits 1-7/8, 2, 2-5/16 Inches Couplers
PEAKTOW PTS0002 Heavy Duty Universal Adjustable Coupler Lock Trailer Hitch Storage Security Lock Fits 1-7/8, 2, 2-5/16 Inches Couplers

PEAKTOW

9.8

View Product
Buy it on Amazon

3

AMPLOCK BRP2516 RV/Trailer Coupler Lock - Secure Your 2 5/16'' Ball Coupler with Straight Lip - North American Craftsmanship for Ultimate Trailer Protection with a Push and Lock System I Made in Canada
AMPLOCK BRP2516 RV/Trailer Coupler Lock - Secure Your 2 5/16'' Ball Coupler with Straight Lip - North American Craftsmanship for Ultimate Trailer Protection with a Push and Lock System I Made in Canada

AMPLock

9.7

View Product
Buy it on Amazon

5% off

4

AMPLOCK BRP2 Boat Trailer Lock/Trailer Lock/RV Lock (fits on 2 inches Coupler) I Made in Canada
AMPLOCK BRP2 Boat Trailer Lock/Trailer Lock/RV Lock (fits on 2 inches Coupler) I Made in Canada

AMPLock

9.5

View Product
Buy it on Amazon

5% off

5

Master Lock 379ATPY Universal Trailer Coupler Lock
Master Lock 379ATPY Universal Trailer Coupler Lock

Master Lock

9.3

View Product
Buy it on Amazon

6

RETRUE Universal Coupler Lock Heavy-Duty Trailer Coupler Locks Ball Hitch Tow Hitch Lock for 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers, Grey
RETRUE Universal Coupler Lock Heavy-Duty Trailer Coupler Locks Ball Hitch Tow Hitch Lock for 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers, Grey

RETRUE

9.0

View Product
Buy it on Amazon

7

PEAKTOW PTS0003 Deluxe Keyed Alike Trailer Towing Lock Set Includes One Coupler Lock One Dual Bent Pins Trailer Receiver Lock and One Brass Coupler Latch Lock
PEAKTOW PTS0003 Deluxe Keyed Alike Trailer Towing Lock Set Includes One Coupler Lock One Dual Bent Pins Trailer Receiver Lock and One Brass Coupler Latch Lock

PEAKTOW

8.7

View Product
Buy it on Amazon

8

AMPLock TLS2: 2'' RV Lock/Trailer Coupler Lock/Boat Trailer Lock - Secure Your 2'' Coupler with Flat Lip - Ultimate Protection for Trailers and RVs - Push and Lock System for Effortless Security
AMPLock TLS2: 2'' RV Lock/Trailer Coupler Lock/Boat Trailer Lock - Secure Your 2'' Coupler with Flat Lip - Ultimate Protection for Trailers and RVs - Push and Lock System for Effortless Security

AMPLock

8.5

View Product
Buy it on Amazon

9

AMPLock TLS2516: 2-5/16'' RV Lock/Trailer Coupler Lock/Boat Trailer Lock - Secure Your 2-5/16'' Coupler with Flat Lip - Push and Lock System for Effortless Security I Made in Canada
AMPLock TLS2516: 2-5/16'' RV Lock/Trailer Coupler Lock/Boat Trailer Lock - Secure Your 2-5/16'' Coupler with Flat Lip - Push and Lock System for Effortless Security I Made in Canada

AMPLock

8.2

View Product
Buy it on Amazon

10

TRIMAX UMAX50D Deluxe Universal Dual Purpose Trailer Coupler Lock with Integrated U-Lock
TRIMAX UMAX50D Deluxe Universal Dual Purpose Trailer Coupler Lock with Integrated U-Lock

TRIMAX

7.9

View Product
Buy it on Amazon

Related Reviews You Might Like

A Guide to Selecting the Best Boat Trailer Lock

Choosing the right boat trailer lock is essential for protecting your boat and trailer from theft. With so many options available, it’s important to understand the key features that make a lock effective and suitable for your needs. The best approach is to consider where and how you’ll use the lock, the level of security you require, and how convenient it is for you to use regularly. By focusing on the main specifications, you can confidently select a lock that balances security, ease of use, and durability.

Lock Type

The lock type refers to the design and mechanism used to secure your trailer, such as coupler locks, hitch pin locks, or wheel locks. This is important because different types offer varying levels of security and convenience. Coupler locks fit over the trailer hitch, hitch pin locks secure the hitch to the tow vehicle, and wheel locks clamp onto the trailer wheel. If you want a quick and visible deterrent, a wheel lock might be best. For long-term storage, a coupler lock can be more secure. Consider how and where you park your trailer to decide which type fits your needs.

Material and Build Quality

Material and build quality determine how resistant the lock is to tampering, cutting, or weather damage. Most locks are made from hardened steel, aluminum, or alloys. Hardened steel offers the best resistance to cutting and prying, while aluminum is lighter but less secure. If you store your trailer outdoors or in high-risk areas, prioritize heavy-duty, weather-resistant materials. For occasional use in safer environments, lighter materials may suffice.

Locking Mechanism

The locking mechanism is how the lock secures and releases, such as key, combination, or push-button systems. This matters because some mechanisms are easier to use or more resistant to picking. Keyed locks are common and reliable, but you need to keep track of the key. Combination locks remove the need for a key but can be less secure if the code is simple. Choose a mechanism that matches your preference for convenience and your need for security.

Size and Fit

Size and fit refer to how well the lock matches your trailer’s specific dimensions, such as the coupler size or wheel width. This is crucial because a lock that doesn’t fit properly won’t secure your trailer effectively. Locks often come in different sizes or adjustable models. Measure your trailer’s hitch or wheel before buying, and check the lock’s compatibility to ensure a snug, secure fit.

Weather Resistance

Weather resistance indicates how well the lock can withstand exposure to rain, snow, and sun without rusting or seizing up. This is important if your trailer is stored outdoors. Look for locks with rustproof coatings, sealed keyways, or weatherproof covers. If you live in a wet or coastal area, prioritize high weather resistance to ensure the lock remains functional over time.

Visibility and Deterrence

Visibility and deterrence refer to how noticeable the lock is to potential thieves. Brightly colored or bulky locks can discourage theft simply by being obvious and hard to remove. If you want to prevent theft before it starts, choose a lock that stands out and looks difficult to defeat. For added peace of mind, combine visible deterrence with strong security features.

subscribe-icon

Best Reviews Guide Newsletter

Get exclusive articles, recommendations, shopping tips, and sales alerts

By submitting your email address you agree to our Terms and Conditions and Privacy Policy