best trailer hitch lock

10 Best Trailer Hitch Locks To Prevent Theft

Are you concerned about the safety and security of your travel trailer? It’s understandable to worry about the valuable items inside your trailer being stolen by unscrupulous thieves. The good news is that you can take steps to protect your belongings and your trailer by using the best trailer hitch lock.

Finding the right lock for the travel trailer hitch can be challenging, but investing in a high-quality lock is crucial to prevent theft. Some travel trailer hitch locks in the market are ineffective and can be easily broken by heavy tools, putting your trailer and items at risk. However, you can find durable locks with advanced locking mechanisms that provide security against theft attempts.

trailer hitch lock
Photo: Kameleon007 / Getty Images

When choosing a lock for travel trailer hitch, you must consider several factors, such as the locking system’s effectiveness and durability. Choosing a lock that fits your specific trailer model and size is essential to ensure optimal security. Let’s find out the best theft proof trailer locks on the market.  

What Is A Trailer Hitch Lock?

A trailer hitch lock is a security device designed to prevent unauthorized access to your trailer hitch. It is typically made of heavy-duty metal and come with a weather-resistant coating to prevent rust and corrosion. Being placed over the hitch’s opening and secured with a lock, this device prevents anyone from attaching their vehicle to your trailer and driving away with it.

Trailer hitch locks can also serve as a visual deterrent, as potential thieves are less likely to attempt to steal a trailer with a visible lock. Some trailer hitch locks also have additional features, such as a built-in alarm that will sound if someone tries to tamper with the lock. Overall, a trailer hitch lock is a simple yet effective way to protect your trailer and provide peace of mind while it’s parked and unattended.

There are different types of trailer hitch locks available on the market, each with its own unique design and level of security. Here are some of the most common types of trailer hitch locks:

Coupler Locks: Coupler locks are the most common type of trailer hitch lock. They work by securing the coupler of the trailer hitch to the ball of the towing vehicle, preventing someone from hitching the trailer to another vehicle. Coupler locks come in different shapes and sizes, and some models are adjustable to fit different coupler sizes.

Receiver Locks: Receiver locks are designed to secure the trailer hitch receiver to the towing vehicle’s hitch. They are ideal for locking a ball mount or bike rack into the hitch receiver. Receiver locks come in different sizes and can be keyed alike with other locks, making it easy to use the same key for multiple locks.

Hitch Pin Locks: Hitch pin locks are designed to secure the hitch pin of the trailer to the hitch receiver of the towing vehicle. They work by inserting the hitch pin through the hitch receiver and locking it into place. Hitch pin locks are ideal for securing a ball mount or bike rack to the towing vehicle.

Latch Pin Locks: A latch pin lock is a type of trailer hitch lock that is designed to secure the latch pin of a trailer coupler. The latch pin is the component that secures the coupler onto the hitch ball of a towing vehicle. A latch pin lock works by inserting a locking pin into the latch mechanism and securing it in place with a key. This prevents the latch from opening and releasing the trailer from the hitch ball. Latch pin locks are relatively easy to install and offer a high level of security for your trailer. They are compatible with most types of trailer couplers, including those with a lever or a trigger latch mechanism.

Selecting the right type of trailer hitch lock depends on the type of trailer hitch you have and the level of security you need. Coupler locks and receiver locks are the most common types of trailer hitch locks, but there are other options available, including hitch or latch pin locks.

Consider the level of security you need, the type of trailer hitch you have, and the features of each lock to select the right one for your needs.

Why You Should Use A Trailer Hitch Lock?

Trailer hitch locks are an essential security device that can provide a variety of benefits for trailer owners. In this answer, we will discuss the various benefits of trailer hitch locks in detail.

Theft prevention: The primary benefit of a trailer hitch lock is to prevent theft. It provides an effective way to secure your trailer from theft when it’s not in use. Trailer hitch locks prevent unauthorized access to your trailer hitch, making it difficult for thieves to steal your trailer. This security device is an affordable way to deter potential thieves from stealing your trailer, and it offers peace of mind when leaving your trailer unattended.

Easy to use: Trailer hitch locks are easy to use and do not require any specialized tools or knowledge. They can be installed in a matter of seconds, making it convenient for trailer owners to secure their trailers quickly. With a simple click, your trailer hitch is locked, and your trailer is secure. This ease of use makes trailer hitch locks a popular choice for trailer owners who want to protect their trailers.

Wide range of compatibility: Trailer hitch locks come in different shapes and sizes, making them compatible with a wide range of trailers and hitches. They can be used with ball mounts, pintle hooks, and receiver hitches, among others. Therefore, regardless of the type of hitch on your trailer, there is a trailer hitch lock that can fit it. This compatibility ensures that you can always find a lock that is suitable for your trailer.

Affordable: Trailer hitch locks are an affordable way to protect your trailer from theft. Compared to other security devices, such as GPS tracking systems or alarms, trailer hitch locks are relatively inexpensive. This makes them accessible to trailer owners on a budget who still want to secure their trailers.

Deters potential thieves: Trailer hitch locks not only prevent theft but also serve as a visual deterrent to potential thieves. Thieves are less likely to attempt to steal a trailer that has a visible lock on the hitch. The lock signals to them that the trailer is secure, making it an unattractive target. This visual deterrent is an additional layer of protection for your trailer.

Built-in alarms: Some trailer hitch locks come with built-in alarms that activate when someone tries to tamper with the lock. These alarms can alert you and nearby people to potential theft attempts, making it easier to catch the thief or prevent the theft altogether. These alarms also serve as an added deterrent, as the noise they make can scare away potential thieves.

Protects trailer accessories: Trailer hitch locks not only protect the trailer but also the accessories that are attached to it. For example, a trailer hitch lock can prevent the theft of your bike rack or cargo carrier, which can be costly to replace. Therefore, trailer hitch locks provide an additional layer of security for your trailer accessories.

Best Trailer Hitch Locks: Top 10 Picks

Investing in the best trailer hitch lock is an excellent way to safeguard your trailer and belongings while on the road or parked. You can have peace of mind knowing that your trailer is secure and protected against theft attempts.

There are a lot of trailer ball hitch locks available on the market, but we’ve chosen 10 of them based on different locking mechanisms and appearances to suit your needs.

1. REESE Towpower Coupler Lock

REESE Towpower 72783 Coupler Lock

Are you searching for the best trailer coupler lock that provides reliable security for your RV? Look no further than the REESE Towpower Coupler Lock.

This high-quality RV hitch lock is constructed with a sturdy steel lock bar and lightweight aluminum body, ensuring your trailer hitch is secure and protected. Its resistance to prying, picking, and drills make it a reliable choice for preventing theft attempts.

One of the best features of the lock is its adjustable design, making it suitable for use with different coupler types and positions. You can easily install and adjust this lock to fit your needs, giving you added peace of mind while on the road.


  • Installable within seconds
  • Universal fitting design is compatible with all couplers
  • Adjustable with 11 different locking positions
  • Highly visible color in the dark
  • Heavy-duty body 


  • Thieves can easily identify where the locks located 

2. Master Trailer Lock – Universal Size

Master Lock - Universal Size Couplers Trailer Locks

This model is an excellent choice if you’re looking for a reliable camper hitch lock. It fits almost any coupler, making it a versatile choice for a range of trailers. Its simple design allows easy installation and use, so you don’t struggle with complex locking mechanisms.

While it may not be the strongest lock on the market, it still provides mid-range security for your trailer and storage. Without special equipment, the thieves cannot penetrate its thick steel exterior. 


  • Super easy to install within a minute
  • The thick steel lock can’t be broken easily
  • Good for securing storage and doors
  • Unique exterior design for added security
  • Fits almost all types of couplers


  • Can’t resist weathering effect
  • It may not fit a few coupler types

3. CURT Black Trailer Hitch Lock

CURT 23518 Black Trailer Hitch Lock

Looking for the best trailer hitch lock to secure your trailer during transportation and storage? Look no further than the CURT Black Trailer Hitch Lock. This is the best locking hitch pin that provides mid-range security and ease of use for your trailer.

The lock is compatible with most hitch types, making it a versatile option for various trailers. While it may not offer universal fitting, it still provides reliable security for your belongings.

The lock also comes with a watertight dust cap to prevent corrosion and dirt build-up, ensuring your lock stays in top condition for longer. The locking hitch pin is designed like a barbell, making it easy to use and offering an anti-theft system that will give you peace of mind while on the road.

In addition to its practical features, the CURT hitch lock is also stylish and visually appealing. Its barbell design adds a touch of sleekness to your trailer, making it a great addition to your gear.


  • An impenetrable lock deters any theft
  • High-strength construction with steel
  • Simple and fast locking and unlocking
  • The watertight mechanism prevents rust and dust
  • Spare keys are included for emergencies


  • Unsuitable for double-walled receiver tubes

4. Master Lock Trailer Hitch Lock

Master Lock 377DAT Trailer Hitch Lock

This model from the Master Lock brand is a mid-range security lock for your trailer, RVs, and other vehicles. It has a unique shaft that can make the lock compatible with most trailer couplers.

The body is well-constructed and has a zinc coating that prevents corrosion and other weathering effects.


  • Highly durable
  • Safe against prying and picking
  • There’ll be no rust or corrosion
  • Front access lock for easy accessibility
  • Ratcheting shaft allows fitting with most couplers


  • Can’t resist powerful tools from pro thieves

5. REESE Towpower Heavy Duty Coupler Lock

Reese Towpower 7088300 Heavy Duty Coupler Lock

We get another heavy-duty lock from the REESE brand at an affordable cost.  With this best trailer tongue lock, you can protect any of your trailers, RV, or any other vehicle and forget worrying.

Since this lock is ratchet designed with 11 different locking positions, there’s no chance of breaking in. Also, it has a lightweight body, so you can take it wherever you want.


  • Compatible with all couplers
  • There are 11 locking positions 
  • It has a ratchet design
  • Included keys are theft-proof
  • Affordable yet super strong lock


  • The unlocking mechanism doesn’t work sometimes

6. AMPLOCK RV/Trailer Coupler Lock

AMPLOCK U-BRP2516 RV/Trailer Coupler Lock

AMPLOCK brand offers a quite different lock compared to others on this list. It could be the best trailer hitch lock for ease of use. You only need to push a button to lock whenever needed and then unlock it with any of your keys.

In case you don’t have your keys with you, no worries. You can just unlock them with the code combination you set before.

Also, this lock offers safety features like a cylinder lock, swivel face, patented mechanism, and unique security code that offers millions of key combinations.


  • The push-and-lock system is easy to use
  • Super strong lock construction
  • Resistant to weather elements
  • Rotative lock face prevents drilling
  • Swivel design prevents traction
  • Can be unlocked with a key or code combination


  • Doesn’t fit all types of couplers

7. Equipment Lock BRHL – Steel Ball and Ring Hitch Lock

Equipment Lock BRHL - Steel Ball and Ring Hitch Lock

From the Equipment Lock Company, you get the best receiver hitch lock. This lock is a good choice if you don’t have airstream trailers.

You can keep all your belongings in your camper safe. If you follow the instructions properly, it’s easy to install. And you won’t need to worry about burglars because this lock has a super solid construction that deters theft.


  • Fits almost all kinds of trailers
  • Solid steel body with electroplated, powder-coated finishing
  • Corrosion resistance lock
  • Easy to install but super hard to break in
  • A protective red covering protects the lock


  • Doesn’t support airstream trailers

8. CZC AUTO Trailer Hitch Coupler Lock

CZC AUTO Black Trailer Hitch Coupler Lock

CZC AUTO is the best trailer hitch lock if you are looking for a compact unit. You can use it for almost anything and carry it anywhere in your pocket. 

Even when you’re hiking, it’s a good option for securing your items while not making your backpack heavy.

It may not be the toughest lock on our list, but it’s secure enough for most of your business. You can fully trust this because the company offers a warranty and money-back guarantee to ensure the strength of this lock.


  • Inexpensive yet durable
  • Can be easily carried anywhere
  • Electrophoretic finishing prevents corrosion
  • Fits most of the couplers
  • Burglars can’t break in easily


  • Deters casual thieves only, not the professional ones

9. Trimax Universal Dual Purpose Coupler Lock

Trimax UMAX100 Premium Universal Dual Purpose Coupler Lock

Trimax brand offers a lock that can fit any couplers. You can use it for indoor and outdoor usage, including your trailer, camper, boat, and storage.

This lock comes with 1/2-turn technology that prevents a false locking mechanism. So, you will get better security for your precious belongings.  


  • Suitable for both indoor and outdoor security
  • Lock can’t be broken or bend
  • Can withstand drill-outs and hammer blows
  • Can resist weather elements
  • Fits all-size couplers
  • Slides on keyhole stop dirt and grime build-up


  • All keys are the same for the same model; burglar can break in this way

10. Proven Industries Trailer Lock

Proven Industries Model 2516 Trailer Lock

This trailer lock from Proven Industries is a heavy-duty lock made with tough, hardened steel. At the same time, the black powder-coated finish makes the exterior look cool.

Burglars will have difficulty penetrating the lock and can’t copy keys for future use. They can’t even use different tools to unlock or break the lock.


  • Lock can’t be broken with power tools, crowbars, or hammers
  • An innovative key system won’t let anyone make a key copy
  • Tough exterior yet looks so elegant
  • Designed in a way to fit any type of trailer


  • Only compatible with specific 2 5/16 inch couplers

How to Select a Trailer Hitch Lock

A trailer hitch lock is a vital security feature that protects your trailer from theft. It secures the hitch to the trailer by locking it in place, making it difficult for someone to take the trailer without the key. Here are five steps to help you select the right trailer hitch lock:

Step 1: Determine the type of hitch

The first step in selecting a trailer hitch lock is to determine the type of hitch on your trailer. There are different types of trailer hitches, including ball hitches, pintle hitches, and fifth-wheel hitches. Each hitch has a unique locking mechanism that requires a specific type of lock. Knowing the type of hitch on your trailer will help you select the right lock.

Step 2: Choose the right size

Once you know the type of hitch, you need to choose the right size of lock. Most trailer hitch locks come in standard sizes, so you need to ensure you choose the right size for your hitch. Check the specifications of your hitch to determine the size of the lock you need.

Step 3: Consider the level of security

The level of security you need will depend on several factors, including the value of your trailer and the level of theft in your area. If you have a high-value trailer, you will need a high-security lock to prevent theft. Look for locks that are made of durable materials, such as hardened steel, and have additional features such as drill-resistant locks or multiple locking points.

Step 4: Check the compatibility with your key

If you already have a lock on your trailer hitch, you may want to consider purchasing a lock that is compatible with your key. Some manufacturers make locks that are compatible with specific key systems, allowing you to use the same key for multiple locks. This can be convenient if you have multiple trailers or need to replace a lock.

Step 5: Read reviews and compare prices

Finally, you should read reviews and compare prices to find the best trailer hitch lock for your needs. Look for locks that have positive reviews and are recommended by other trailer owners. Additionally, compare prices to find a lock that is within your budget but still offers the level of security you need.

Selecting the right trailer hitch lock is crucial for protecting your trailer from theft. By following these five steps, you can choose a lock that is compatible with your trailer hitch, the right size, and offers the level of security you need. Remember to read reviews and compare prices to find the best lock for your needs.


If you’ve already read the advantages and disadvantages of each of the products above, you might know which is the best trailer hitch lock.

However, if you don’t have much time and want quick suggestions, we’d recommend getting a lock from the AMPLOCK brand, as their lock is durable enough and has two types of unlocking systems.

Also, if you’re okay with spending more bucks, we recommend you get the lock from Proven Industries.

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  1. Ninja Camper

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