Safety & Security

The Best Towing Hitch Locks

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

A towing hitch lock is a crucial accessory for securing your trailer and preventing theft. Investing in a quality lock ensures peace of mind, protecting your valuable equipment whether it's parked at home or on a job site. Choosing the right one means balancing security, durability, and ease of use.

No. 1
METOWARE Trailer Coupler Lock, Fit 1-7/8", 2", 2-5/16" Coupler, Yellow
  • HEAVY DUTY TOW BALL COUPLER LOCK – It's a newly upgraded trailer coupler lock with all metal construction. The use of a bright, deterrent yellow color provide durable, highly visible protection for trailers.
  • UNIVERSAL COMPATIBILITY – This universal trailer hitch security adjustable lock fits 1-7/8”,2”,2-5/16” couplers and ratchet is adjustable with 11 locking positions.
  • EASY TO USE – Metoware trailer lock set Ratchet design is adjustable with 11 locking positions. It is easy and quick for you to install and remove
  • SAFETY & HIGH QUALITY – The core of the lock is made of premium zinc alloy tubular and combines with the last anti-theft technology. The new design of the lock core makes it lock more secure.
  • All-WEATHER PROTECTION – Built for all-weather reliability, our trailer locks is shielded by durable rubber caps that protect the locking mechanisms from rain, snow, dirt, and debris. Their longevity and security are further enhanced by anti-corrosion...
No. 2
Rhino USA Trailer Coupler Lock Kit (2in Trailers) - Anti-Theft Steel
  • AMERICAN OWNED, FAMILY OPERATED - Join the Rhino USA Family and Support a Father/Son Business With the Best USA-Based Customer Support.
  • PROTECTED FROM THE ELEMENTS - Heavy Duty Powder Coated Finish Shields Against Rust, Corrosion, and Harsh Weather, Ensuring Long-Lasting Protection for Your Trailer Hitch Coupler Lock.
  • COMPATIBLE COUPLER SIZES - Fits Select 50×50, 50×60 Couplers, and 2" A-Frame Couplers. Not Compatible With Adjustable, Bulldog, Lock Trailer, 50mm, Ring/Pintle, or 1-7/8" Couplers.
  • CONFIDENCE & PEACE OF MIND - Knowing your Boat, Toy Hauler, or Trailer is Securely Protected From Theft With a Durable, Tamper-Resistant Lock Designed for Maximum Security.
  • REAL LIFETIME REPLACEMENT - Hitch Trailer Locks Come With a Lifetime Replacement. If you Encounter any Issues, We'll Ensure You're 100% Satisfied With a Replacement or Refund.
No. 3
JUSTTOP Trailer Hitch Receiver Pin Lock,5/8" Dia 3-1/2" Long Pin Trailer Lock for Class III IV 2" and...
  • NIVERSAL COMPATIBILITY:The trailer hitch lock is designed with a 5/8"diameter hitch pin and a length of 3-1/2"of effective pin length,fits most class III IV 2" and 2-1/2" hitch receivers for towing, trailer, boat, RVs, truck, car and tractors
  • DURABLE ANTI-THEFT HITCH LOCK:The hitch lock feature black electrophoretic-painted carbon steel, this exceptionally rigid hitch lock resists bending. Security is enhanced by an upgraded tamper-resistant tubular key system with a durable zinc-alloy...
  • DEPENDABLE SECURITY:Engineered with theft-deterring high-strength steel, this locking pin delivers dependable security for your entire trailer hitch assembly
  • PREVENT RATTLING NOISE:Eliminate trailer hitch rattling noise with our specialized lock pin—equipped with four integrated rubber O-rings that actively absorb vibrations during towing, preventing disruptive shaking sounds while maintaining secure...
  • PACKAGE INCLUDED:For convenience, our trailer hitch locks come with two keys. Four integrated rubber o-rings absorb vibration during towing, as well as a 5/8" locking pin and an upgraded push-button latch
No. 4
METOWARE Heavy-Duty Universal Trailer Coupler Lock Adjustable Trailer Lock
  • UNIVERSAL COMPATIBILITY: This universal trailer hitch security adjustable lock fits 1-7/8”, 2”, and 2-5/16” couplers.
  • EASY TO USE: The METOWARE trailer coupler lock features a ratchet design that is adjustable with 11 locking positions. It is quick and easy for you to install and remove.
  • HIGH-STRENGTH MATERIAL: This trailer hitch lock is made with an aluminum body and heavy-duty iron construction. It is durable, corrosion, and rust-resistant, providing comprehensive protection for your trailer.
  • SAFETY & HIGH QUALITY: The lock core is made of a premium zinc alloy tubular structure and combines with the latest anti-theft technology. This upgraded lock core design ensures maximum security.
  • UNIQUE DESIGN: The unique exterior design is more aesthetically pleasing and protective than traditional trailer coupler locks. This trailer coupler lock comes with an all-weather rubber cap that provides excellent protection against dust and water.
No. 5
Master Lock Trailer Hitch Coupler Lock, Keyed, RV Lock, Black 379ATPY
  • Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers
  • Trailer lock is best used for vehicles, trailers, and RVs
  • Trailer coupler lock features advanced locking mechanism to resist picking and prying
  • Trailer hitch lock is constructed from zinc to resist rust and corrosion
  • Includes one trailer coupler lock, two keys
No. 6
CZC AUTO Hitch Receiver Pin Lock, Trailer Receiver Lock with 5/8" Pin for Class III IV 2" and 2-1/2" Receiver...
  • FIT FOR 2" 2-1/2" TOW RECEIVERS: CZC AUTO dogbone style trailer hitch receiver lock uses 5/8" pin with 3-1/2" effective length perfect for Class III/IV 2", 2-1/2" hitch receiver tubes.
  • PREMIUM MATERIAL: The trailer receiver lock uses black electrophoretic painted carbon steel, solid and hard to bend. 360 degree rotating head, easy to handle. All-weather rubber key slot cap keeps the keyhole away from moisture, dust and rust. Updated...
  • FITMENT TYPE: Use a tow receiver lock to ensure the towing safety. CZC AUTO hitch pin lock is compatible with hitch rack, cargo hitch tray, bike rack, hitch ball and tow rope, perfect for 2" and 2-1/2" receivers on trailer truck RV car boat.
  • CLIENT SUPPORT: 30-day money-back for any reason, 12-month warranty for quality-related issues. Please feel free to contact us at first if there is any problem when you receive or use our products. We are always here to support you.
No. 7
Rhino USA Trailer Coupler Lock Kit (2-5/16in Trailers) - Anti-Theft Steel
  • AMERICAN OWNED, FAMILY OPERATED - Join the Rhino USA Family and Support a Father/Son Business With the Best USA-Based Customer Support.
  • PROTECTED FROM THE ELEMENTS - Heavy Duty Powder Coated Finish Shields Against Rust, Corrosion, and Harsh Weather, Ensuring Long-Lasting Protection for Your Trailer Hitch Coupler Lock.
  • COMPATIBLE COUPLER SIZES - Fits Select 50×50, 50×60 Couplers, and 2-5/16" A-Frame Couplers. Not Compatible With Adjustable, Bulldog, Lock Trailer, 50mm, Ring/Pintle, or 1-7/8" Couplers.
  • CONFIDENCE & PEACE OF MIND - Knowing your Boat, Toy Hauler, or Trailer is Securely Protected From Theft With a Durable, Tamper-Resistant Lock Designed for Maximum Security.
  • REAL LIFETIME REPLACEMENT - Hitch Trailer Locks Come With a Lifetime Replacement. If you Encounter any Issues, We'll Ensure You're 100% Satisfied With a Replacement or Refund.
No. 8
RETRUE Universal Trailer Coupler Lock, Adjustable Hitch Lock, Bright Yellow
  • Universal Fit: Reture trailer coupler lock is designed adjustable with 11 locking positions and fits 1-7/8”, 2”, and 2-5/16"couplers. 2 Keys are included
  • Upgrade Vision: In the premise of ensuring the safety of the couper hitch lock is not cut, we have upgraded the appearance of the lock, while more lightweight and flat. The use of a bright, deterrent yellow color provide durable, highly visible protection...
  • Securtiy: This trailer hitch lock is made with aluminum body and high-strength A36 steel construction, strong cut, and shear resistance. It's rustproof and weatherproof.
  • Passed QC product quality certification Enhanced Lock Cylinder: To make the tow ball coupler lock more robust, we upgrade more complex locks and thicker keys. This makes it impossible to crack the lock and increases the toughness of the key
  • Reliable after-sales service: 120 days warranty. If you encounter any problems, please feel free to contact us through the "Ask a Question" button. We are always happy to help and are committed to providing a responsive solution 24/7.
No. 9
RETRUE Heavy-Duty Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Steel...
  • Universal Fit & Adjustable Design - RETRUE trailer coupler lock features 11 locking positions, compatible with 1-7/8", 2", and 2-5/16" couplers for a versatile fit across various couplers.
  • Heavy-Duty Construction - With a wider and thicker steel U-shaped pipe and body, this lock offers enhanced resistance to external forces and theft attempts.
  • Superior Security - Crafted from an aluminum body and high-strength A36 steel, this trailer hitch lock provides robust cut and shear resistance. Rustproof, weatherproof, and QC product quality certified.
  • Upgraded Lock Cylinder - For added strength, the tow ball coupler lock features a more complex lock mechanism and thicker keys, making it virtually impossible to crack and increasing key durability.
  • Satisfaction Guaranteed - Enjoy a 120-day warranty and responsive 24/7 customer support. If you experience any issues, simply reach out via the "Ask a Question" button for assistance. We're committed to providing top-notch service.
No. 10
B&W Trailer Hitches Receiver Hitch Lock - Fits 2", 2.5" & 3" Receivers - TS51230
  • AUTOMATIC LOCKING OPERATION – Designed for ease of use, this B&W receiver hitch lock features an auto‑return spring that locks automatically when inserted into a compatible two inch receiver. No twisting or alignment is required, making it quick to...
  • DOUBLE BALL BEARING SECURITY – A dual ball bearing locking mechanism creates a tight, rattle‑reducing fit inside the receiver tube while resisting prying or forced removal. This design helps deter theft and keeps hitch‑mounted accessories secure...
  • WEATHER‑RESISTANT STAINLESS STEEL – Constructed from stainless steel, this hitch lock is built to withstand rain, road spray, and seasonal exposure. A watertight dust cap helps keep moisture and debris out of the lock cylinder, maintaining smooth...
  • INCLUDES MATCHED KEYS – The TS51230 receiver lock includes two matching keys for convenience and backup. The precision‑cut keys engage smoothly with the internal mechanism, allowing reliable locking and unlocking without binding or sticking during...
  • LIMITED LIFETIME WARRANTY – Made in America and backed by B&W’s Limited Lifetime Warranty, this receiver hitch lock reflects B&W’s commitment to quality materials and dependable security for trailer hitch owners who need lasting protection.

Last update on 2026-08-31 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Towing Hitch Locks

Hitch Size Compatibility

The first step is to determine the correct size of your trailer hitch receiver. Hitches come in standard sizes like 1.25 inches, 2 inches, 2.5 inches, and 3 inches. Ensure the lock you purchase matches your receiver's dimensions precisely to ensure a snug and secure fit. A lock that is too small will not engage properly, while one that is too large may be ineffective.

Locking Mechanism Type

Hitch locks employ various locking mechanisms. Common types include pin locks, ball coupler locks, and receiver locks. Pin locks are straightforward and insert through the hitch pinhole. Ball coupler locks physically block the trailer's coupler from being attached to another vehicle. Receiver locks often cover the entire receiver tube opening. Consider the level of security you need and how convenient each type is to operate.

Material and Durability

Look for locks constructed from robust materials like hardened steel to resist cutting and tampering. Weather resistance is also important, especially if the lock will be exposed to the elements. Many high-quality locks feature protective coatings or are made from corrosion-resistant alloys to ensure longevity and reliable performance in various conditions.

Frequently Asked Questions

What is the difference between a pin lock and a coupler lock?
A pin lock secures the hitch pin that goes through your trailer hitch receiver and ball mount. A coupler lock, on the other hand, fits directly over the trailer's coupler, preventing it from being attached to an unauthorized vehicle.
Are all hitch locks universal?
No, hitch locks are not universal. They are designed to fit specific receiver tube sizes (e.g., 2-inch, 2.5-inch) and sometimes specific coupler types. Always check the compatibility with your trailer hitch before purchasing.
How do I measure my trailer hitch receiver size?
Measure the inner diameter of the receiver tube opening on your vehicle's hitch. For example, a standard 2-inch receiver will have an opening that is 2 inches by 2 inches.
Can a hitch lock be picked?
While some basic locks might be susceptible to picking, most quality hitch locks use robust key mechanisms designed to resist tampering. Higher-security models offer enhanced protection against picking and brute-force attacks.