What is a trailer hitch lock used for?

A trailer hitch lock is used to secure a trailer to the towing vehicle, preventing the trailer from being unhooked or stolen.

Are all trailer hitch locks universal?

No, trailer hitch locks are not universal. They are designed to fit specific types of hitches, so it's important to know your hitch type before purchasing.

How do I install a trailer hitch lock?

The lock is typically installed by inserting it into the hitch receiver or coupler, then securing it with a key or combination lock.

Do trailer hitch locks provide good security?

Yes, they provide a layer of security by deterring theft, but they should be used in conjunction with other security measures.

Can a trailer hitch lock withstand harsh weather?

Most trailer hitch locks are made from weather-resistant materials like hardened steel or aluminum to withstand harsh conditions.

April 3, 2026

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10 Best trailer hitch locks of 2026

Explore top picks

Best Choice

1

Wowewk

Trailer Lock, Heavy Duty Tongue LocksHeavy Duty Trailer Lock for 2 5/16-Inch Couplers - Anti-Theft, Anti-Smashing Tow Hitch Lock with Handle - Secures Safety Chains for RV, Trailer, Boat (Black)
9.6

Exceptional

Our Rating
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Value for Money

2

HONTAITUO

2-5/16" Heavy Duty Trailer Lock - Ball Coupler and Safety Chains Anti-Theft, Solid Steel Trailer Tongue Lock for RV, Boat, Camper, Cargo Trailers Trailer Hitch Locks
9.5

Excellent

Our Rating
3

Master Lock
Master Lock Trailer Coupler Lock, Universal Size Fits 1-7/8", 2", and 2-5/16", 389DAT
Main highlights

Comprehensive Security
The Master Lock 389DAT provides robust security for trailers, fitting multiple coupler sizes and preventing unauthorized access.

Ideal for Trailer Owners
Perfect for securing trailers against theft, especially in high-risk areas or for long-term parking.

Praised for Effectiveness
Customers appreciate its effectiveness in preventing theft, making it a reliable choice for trailer security.
9.3

Excellent

Our Rating

9.7
Easy installation

9.7
Simple to use

9.5
lock easily
4

Master Lock
Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock for Securing RV’s, Horse Trailers, Tool Trailers and More, 379ATPY
Main highlights

Universal Fit
Fits 1-7/8 in., 2 in., and most 2-5/16 in. trailer couplers.

Ideal for Security
Best used for securing vehicles, trailers, and RVs against theft.

Highly Praised Durability
Praised for its toughness and reliability in customer reviews.
Key specs
- material:Zinc
- lock type:Key Lock
- special features:Portable
- compatibility:Vehicles, trailers, RVs
- dimensions:5.1 x 3.5 x 4.6 inches
9.2

Excellent

Our Rating

9.9
Simple to take off

9.7
Easy installation

9.5
Simple to use
5

Rhino USA
Rhino USA Trailer Hitch Lock Kit (for 2-5/16" Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV, Camper, Trailer, Boat, Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue
Main highlights

American Owned, Family Operated
Support USA business. Powder-coated for durability, fits most 2-5/16 inch couplers. Guarantees safety and satisfaction.

Ideal Use Cases
Perfect for securing boats, toy haulers, and trailers, offering peace of mind against theft in any weather conditions.

Customer Reviews Highlight
Most praised for its robust construction and effectiveness in theft prevention, providing confidence and reliability to users.
9.1

Excellent

Our Rating

9.5
Security

9.5
lock easily

8.9
Simple to use
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6

Rhino USA
Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK
Main highlights

Secure_Weatherproof_Design
Solid forged steel with weatherproof slide cap protects against theft and elements.

Ideal_for_Towing_and_Travel
Perfect for securing trailers, trucks, boats, and bikes during long trips.

Praised_for_Durability_and_Security
Customers appreciate its robust build and ease of use.
Key specs
- material:Solid Forged Steel
- lock type:Anti-theft hitch pin
- special features:Weatherproof slide cap
- compatibility:Class III & IV hitches
- dimensions:8.82 x 3.98 x 1.85 inches
8.9

Very Good

Our Rating

9.9
Durability

9.7
lasts a long time

9.5
Waterproof
7

METOWARE

METOWARE Universal Trailer Hitch Locks, Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers with 2 Keys
8.7

Very Good

Our Rating
8

METOWARE
METOWARE Trailer Coupler Lock Universal Adjustable Heavy-Duty Steel Trailer Hitch Lock, Anti Theft Trailer Ball Lock Towing Lock for Towing Trailer Security Fits 1-7/8",2”, 2-5/16" Coupler Yellow
Main highlights

Universal Compatibility for Various Couplers
Fits 1-7/8, 2, 2-5/16 couplers with adjustable ratchet positions.

Ideal for Trailer Security Enhancement
Provides visible deterrent and added security for trailers.

Highly Visible Deterrent
Bright yellow color makes it easily noticeable and deters theft.
Key specs
- material:All metal construction
- lock type:Zinc alloy tubular
- special features:11 locking positions
- compatibility:1-7/8, 2, 2-5/16 couplers
- dimensions:5.1 x 3.3 x 6.49 inches
8.5

Good

Our Rating

9.5
Simple to use

8.9
Easy installation

8.0
Durability
9

CZC AUTO
CZC AUTO Hitch Receiver Pin Lock, Trailer Receiver Lock with 5/8" Pin for Class III IV 2" and 2-1/2" Receiver, for Hitch Bike Rack Tray Ball Tow Rope for Trailer Truck Car Boat (1 Pack, 5/8 inch pin)
Main highlights

Durable Construction
Made of black electrophoretic painted carbon steel, resists bending.

Versatile Use
Perfect for securing trailers, bikes, and cargo with 2/2-1/2 receivers.

Highly Rated Security
Customers praise its reliability and effective locking mechanism.
Key specs
- material:Black electrophoretic painted carbon steel
- lock type:Tubular key hole
- special features:360 degree rotating head
- compatibility:2 and 2-1/2 receivers
- dimensions:6.93 x 1.54 x 1.14 inches
8.4

Good

Our Rating

9.5
Easy installation

9.3
worth the money

9.3
Durability
10

Rhino USA
Rhino USA Trailer Hitch Lock Kit (for 2" Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV, Camper, Trailer, Boat, Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue
Main highlights

Key Features
USA-based family business offering a rust-resistant, powder-coated trailer lock fitting most 2-inch couplers for ultimate theft protection.

Ideal Use Cases
Perfect for securing boats, toy haulers, and trailers, ensuring peace of mind against theft in various weather conditions.

Customer Praise
Highly praised for its durability and effectiveness in preventing theft, offering customers a guaranteed 5-star experience and satisfaction.
Key specs
- material:Powder Coated
- lock type:Hitch Lock
- special features:Rust Protection
- compatibility:Most 2 Inch Couplers
- dimensions:5 x 5 x 5 inches
8.1

Good

Our Rating

9.5
Security

9.1
lock easily

8.7
Lock Feature

Frequently Asked Questions

What is a trailer hitch lock used for?
A trailer hitch lock is used to secure a trailer to the towing vehicle, preventing the trailer from being unhooked or stolen.

Are all trailer hitch locks universal?
No, trailer hitch locks are not universal. They are designed to fit specific types of hitches, so it's important to know your hitch type before purchasing.

How do I install a trailer hitch lock?
The lock is typically installed by inserting it into the hitch receiver or coupler, then securing it with a key or combination lock.

Do trailer hitch locks provide good security?
Yes, they provide a layer of security by deterring theft, but they should be used in conjunction with other security measures.

Can a trailer hitch lock withstand harsh weather?
Most trailer hitch locks are made from weather-resistant materials like hardened steel or aluminum to withstand harsh conditions.

10 Best trailer hitch locks of 2026

1

Trailer Lock, Heavy Duty Tongue LocksHeavy Duty Trailer Lock for 2 5/16-Inch Couplers - Anti-Theft, Anti-Smashing Tow Hitch Lock with Handle - Secures Safety Chains for RV, Trailer, Boat (Black)

How do we rank?

How do we rank?

Analyzing top stores

2

2-5/16" Heavy Duty Trailer Lock - Ball Coupler and Safety Chains Anti-Theft, Solid Steel Trailer Tongue Lock for RV, Boat, Camper, Cargo Trailers Trailer Hitch Locks

3

Master Lock Trailer Coupler Lock, Universal Size Fits 1-7/8", 2", and 2-5/16", 389DAT

9.7

9.7

9.5

4

Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock for Securing RV’s, Horse Trailers, Tool Trailers and More, 379ATPY

9.9

9.7

9.5

5

Rhino USA Trailer Hitch Lock Kit (for 2-5/16" Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV, Camper, Trailer, Boat, Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue

9.5

9.5

8.9

6

Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK

9.9

9.7

9.5

7

METOWARE Universal Trailer Hitch Locks, Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers with 2 Keys

8

METOWARE Trailer Coupler Lock Universal Adjustable Heavy-Duty Steel Trailer Hitch Lock, Anti Theft Trailer Ball Lock Towing Lock for Towing Trailer Security Fits 1-7/8",2”, 2-5/16" Coupler Yellow

9.5

8.9

8.0

9

CZC AUTO Hitch Receiver Pin Lock, Trailer Receiver Lock with 5/8" Pin for Class III IV 2" and 2-1/2" Receiver, for Hitch Bike Rack Tray Ball Tow Rope for Trailer Truck Car Boat (1 Pack, 5/8 inch pin)

9.5

9.3

9.3

10

Rhino USA Trailer Hitch Lock Kit (for 2" Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV, Camper, Trailer, Boat, Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue

9.5

9.1

8.7

Frequently Asked Questions

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