Top 5 Best Trailer Hitch Locks

Best Trailer Hitch Locks 2026

Here are the 5 Best Trailer Hitch Locks on the Market:

Best Trailer Hitch Locks

Master Lock 389DAT Universal Trailer Hitch Lock

This lock is a great all-around option that is compatible with most trailers. It is made of durable steel and has a weather-resistant coating.

The Master Lock 389DAT Universal Trailer Hitch Lock is a durable and secure way to protect your trailer hitch from theft. It is made of heavy-duty steel and features a 5/8-inch diameter shackle that is resistant to cutting and prying. The lock also has a weather-resistant coating that will protect it from the elements.

The 389DAT is a universal lock, which means it can be used with most trailer hitches. It comes with two keys, so you can keep one in your vehicle and one in a safe place.

Features:

  • Heavy-duty steel construction
  • 5/8-inch diameter shackle
  • Weather-resistant coating
  • Universal fit for most trailer hitches
  • Two keys included

Benefits:

  • Deters theft
  • Durable and damage-resistant
  • Easy to use and install
  • Includes two keys

Best Trailer Hitch Locks

Reese Towpower Coupler Lock

This lock is specifically designed for Reese couplers. It is made of heavy-duty steel and has a secure locking mechanism.

The Reese Towpower Coupler Lock is a high-security lock designed to protect your trailer coupler from theft. It features a 1-inch diameter shackle and a weather-resistant coating.

Pros:

  • Heavy-duty steel construction
  • 1-inch diameter shackle
  • Weather-resistant coating
  • Compatible with most 2" and 2-5/16" couplers
  • Two keys included
  • Easy to use
  • Affordable

Cons:

  • Can be difficult to insert into some couplers
  • Shorter shackle compared to some competitors

REESE Towpower 72783 Coupler Lock

CURT 5/8-Inch Pin Trailer Hitch Lock

This lock is a simple and affordable option that is easy to use. It is made of steel and has a durable locking mechanism.

Pros:

  • Heavy-duty steel construction
  • 5/8-inch pin
  • Weather-resistant coating
  • Simple design
  • Easy installation
  • Affordable

Cons:

  • Less secure than high-end locks
  • Shorter shackle length

CURT 23518 Trailer Hitch Lock

Proven Industries 2516-GP Trailer Hitch Lock

This is one of the most secure options available, made of hardened steel with a unique anti-theft locking system.

Pros:

  • Heavy-duty steel
  • 1-inch diameter shackle
  • Weather-resistant coating
  • Universal fit
  • Lifetime warranty
  • High security rating

Cons:

  • Can be tight to insert into some hitches
  • Shorter shackle

Proven Industries 2516-GP Lock

Altor SAF Trailer Hitch Lock

This weatherproof stainless steel lock also includes a high-security design and optional alarm.

Features:

  • Heavy-duty steel
  • 1.25-inch shackle
  • Weather-resistant
  • Universal fit
  • High security rating
  • Lifetime warranty
  • Two keys included

Altor SAF Trailer Lock

When choosing a trailer hitch lock, consider:

  • Compatibility: Ensure the lock fits your trailer.
  • Security: Look for durable materials and strong locking mechanisms.
  • Price: Options range from budget to premium—choose what fits your needs.

No lock is 100% theft-proof, but a quality hitch lock significantly reduces your risk.