Best Trailer Hitch Lock Of 2018: A Complete Rundown

It is quite absurd that some people do not secure their trailers with the best trailer lock. In fact, I never tow any load or vehicles without a reliable hitch lock that can keep the integrity of the connection.

Always remember that what you are towing here are not ordinary items. Most of the time, the things that you are hauling at the back of your vehicle are your precious caravan, RVs, and jet ski. These things are not cheap at all. They might be among the most expensive properties that you have. Therefore, it is not acceptable that you can give less care to these pieces of equipment while you are towing them on the road.​


The lock will safeguard the load so that it will never be detached, regardless of the terrain and condition. And even if you are not traveling, the risks are still there. Thieves will always be lurking on the corner, waiting for the perfect opportunity to nab your belongings. Some of these cold-hearted robbers are just waiting for the perfect opportunity to strike. They can steal your towed vehicle in just under two minutes. Without a reliable lock, these scary incidents can really happen.

Hitch lock for trailers will come essentially in different situations. By investing in this tool, you will be able to secure the trailer to your vehicle, even if you are not looking. If you are searching for the right hitch locks for your trailer, better consider the following options below.

Best Trailer Hitch Lock On The 2018 Market​

Product Name



Our Rating

1. Reese Towpower 72783 Universal Coupler Lock - Editor's Choice

Reese Towpower 72783 Universal Coupler Lock


2. Tow Ready (63228) 'Gorilla Guard' Coupler Lock - Runner-Up

Tow Ready (63228) 'Gorilla Guard' Coupler Lock for 2


3. Master Lock Trailer Lock - Budget-Friendly Pick

Master Lock Trailer Lock, Trailer Coupler Lock, 377KA


4. Proven Locks / Industries 2178 Anti Theft Trailer Coupler Lock - High-End Choice

Proven Locks / Industries 2178 All Steel - Heavy Duty Design - Anti Theft Trailer Coupler Lock ( fits 2


5. CURT 23079 Trailer Coupler Lock - Best Aluminum Trailer Lock

CURT 23079 Trailer Coupler Lock


Reese Towpower 72783 Universal Coupler Lock

If there's a personal recommendation for a hitch lock that I am willing to shove down to your face, it would be the Reese Towpower 72783 Universal Coupler Lock. This one has an outstanding design and durability. It can keep up with the weight of your trailer without losing its rigidity or strength of components. It can also easily fit into different coupler sizes such as the 2-5/16 inch coupler, 1-7/8 inch coupler, and the 2-inch coupler. The versatility that it has ensures that it can secure any type of connection.

This lock features a heavy-duty aluminum body. Meanwhile, the lock bar is crafted from industrial-grade stainless steel. This amenity is never easy to break, even if you spend a whole day trying to crack it. This lock also has a ratchet design that allows you to utilize eleven positions for locking. The lock is also resistant to prying and picking. Ordinary thieves will never breach this tool at all. Meanwhile, the keys of this lock have embossed tags for easier identification and storage.


  • Highly rugged and durable lock
  • Resistant to rust and corrosion
  • Adjustable locking positions
  • Can never be broken by ordinary means
  • Accommodates different type of connections.


  • Not as heavy as other locks.
Tow Ready (63228) 'Gorilla Guard' Coupler Lock for 2

The Tow Ready Gorilla Guard is another impeccable trailer lock that can protect your precious load from being stolen. It is a rugged tool with a simple design for enhanced confidence on usage. It is durable too and highly resistant to weather elements. Even if you expose it to the rain, heat, and cold temperatures, the lock will remain in its top shape. Of course, its toughness is something that you can trust. It can never be breached easily, even by the sneaky and impish thieves.

This lock is compatible with two-inch couplers. If your trailer has a similar coupler size, then the Tow Ready Gorilla Guard is the perfect choice for you. However, always keep in mind that the width of the coupler should never exceed more than 3 13/16 inches. Meanwhile, the height of the coupler lip must be lower 5/16 inch. If the specs go beyond these measurements, the lock will never fit.

The Tow Ready Gorilla Guard has a single-action key. It allows you to lock and unlock the device quickly and hassle-free. It also features an innovative shield design that offers impregnable protection against tampering devices.


  • Single-action key for quicker and smoother access
  • Offers a reliable locking mechanism
  • Compatible with many 2-inch trailer couplers
  • Rugged and durable construction
  • Resist heat, cold, and moisture.


  • Inserting the key on the lock is somehow difficult.

#3. Master Lock Trailer Lock - Budget-Friendly Pick

Master Lock Trailer Lock, Trailer Coupler Lock, 377KA

The Master Lock Trailer Lock offers the best value out of the money that you are going to pay for it. This particular lock has an entry-level price but the features it can provide you are more than what you can imagine. First and foremost, the lock is versatile. It can accommodate multiple coupler sizes, such as the 2-inch and 2-5/16-inch models. It can also work with 1-7/8-inch models, which made it an excellent choice for users that own multiple trailers.

The Master Lock Trailer Lock can be utilized in any given scenarios. It can withstand harsh terrains and weather conditions. The body is guaranteed to be resistant to rust and corrosion. It won't break or crack, either. Even if thieves will pound it or use tampering device, the lock will never budge an inch. The locking mechanism of the Master Lock Trailer Lock provides absolute defense against prying and picking. Your trailer will never get stolen once this lock is already installed. You can have a peace of mind that your beloved cargo will stay in the place where you leave it.


  • Resistant to thief prying and picking
  • Tough and rugged lock
  • Immune to rust and corrosion
  • Easy and smooth key access
  • Fits different coupler specifications.


  • It cannot fit snugly to the socket (but it is still secure).
Proven Locks / Industries 2178 All Steel - Heavy Duty Design - Anti Theft Trailer Coupler Lock ( fits 2

I know that the Proven Locks 2178 Anti Theft Trailer Coupler Lock is not a cheap unit. But for the protection and security, it can give to your trailer, investing in this unit should never be regrettable. It is among the few trailer locks that can accommodate all types of coupler locks that you can see on the market today. It is durable, rugged, and offers good defense against tampering and other types of mischievous attacks that those trailer robbers have on their sleeves.

Aside from this, this hitch lock resists corrosion and rust, too. It doesn't matter if you will leave this exposed in the open. Its quality will never whittle down at all. This one can also protect your safety chains to ensure that every part will be covered. The entire lock is crafted from an all steel construction for maximum toughness. The entire surface is covered with black powder coat finish to amplify its strength and overall durability. Despite being a tough boy, this lock still offers a smooth and quick installation. It is never quirky at all.


  • One of the most rugged trailers locks today
  • Quick and simple installation
  • Provides a "glove-like" fit
  • Compatible with various coupler locks
  • Can secure your safety chains.


  • No drawbacks except for its given expensiveness.

#5. CURT 23079 Trailer Coupler Lock - Best Aluminum Trailer Lock

CURT 23079 Trailer Coupler Lock

For those who are looking for trailer lock that is crafted from durable material, the CURT 23079 Trailer Coupler Lock can be a decent candidate. After all, the body of this device is made from industrial-grade aluminum, which is both semi-lightweight and tough at the same time. Despite this fact, the lock is not that expensive. The price tag of the CURT 23079 can still secure your bank accounts from being ripped.

This lock is capable of preventing the trailer ball from being entangled to the trailer coupler. It is one of the best ergonomics that this hitch lock can offer to its users. It can also cater 1-7/8-inch, and 2-inch rolled lip and flat couplers. Therefore, the versatility of its applications is not limited, too.

Aside from its pure aluminum body, the CURT 23079 Lock has a grey powder coating, too. The said finish improves the durability and resistance of the lock against rust and corrosion. There are two keys included in this package. Even if you lost one key, you could be sure that there is still a spare key that you can utilize.


  • Industrial-grade aluminum body for maximum protection
  • Powder coated for weather resistance
  • Accommodates both rolled lip and flat couplers
  • Impressive locking power
  • Prevents trailer ball from messing the connection.


  • Installation process is tad bit difficult.

How To Choose The Best Trailer Lock

How To Choose The Best Trailer Hitch Lock

There are a variety of trailer locks that you can get today. They may come in different design, style, features, and construction. Their installation process can be unique from one another too. However, despite their given nuances, these trailer locks still do one function only. That's to protect your load from getting stolen from you.

It is important to consider the hitch capacity before choosing a lock. Specifically, hitches and trailer are categorized, depending on the amount of load or weight that they can carry safely. Take this for example. The Class I trailers are those hitches that can tow up to 2,000 pounds or lesser. They can be carried by small car. On the other hand, Class V hitches are capable of yielding 30,000 pounds of loads. Only heavy-duty vehicles are allowed to transport them.

Because of this, it is necessary that the trailer lock can cope up with the class category of your hitch. You don't want the lock to be damaged just it has an inappropriate fit with the coupler lock.

It is also essential that the trailer lock you get will not only fit your towing equipment and hitch receiver as well. Typically, trailer locks have a dimension of 1 5/8 inch (in diameter). Those Class II hitch receivers are using half-inch locks. Meanwhile, Class III up to V receivers are usually coupled with 5/8-inch pins. These are just figures. But make sure that the lock you get will match the specifications of the trailer that you are carrying.

On the other hand, a coupler lock is another form of trailer lock. The particular device is an added protection to prevent thieves from towing your trailer while you are not looking. Specifically, most coupler locks have U-shape design that fits perfectly on the coupler located on the tongue of the trailer. Once installed, a coupler lock will stop anyone from hooking your trailer without any consent.

Overall, a trailer lock should possess durability and rigidity. It should not break even robbers will do their best. It should not be breached by prying and picking, either. Even the outdoor elements must not compromise its construction. Rust and corrosion can quickly lessen the rigidity of the device.

Of course, the installment is also crucial to the quality of the lock. You don't want to get a lock that is difficult to mount. It will curb down the functionality of the equipment. You don't want burglars to get you first before you secure your trailer.​

Final Verdict​

Having the best trailer lock is essential for every trailer owner. You cannot camp peacefully if you know that your hitch is not protected. Camping and parking outdoors may be great, but it is undeniable that the dangers are still ever present. Trailer thieves and muggers may just be lurking on the corner, waiting for the perfect opportunity to sneak in. If your hitch is not secured, you will just wake up empty-handed.

The trailer locks that I have featured here are among the top choices that you should include in your shopping list. Getting any of them can certainly secure your trailer every time you are on a roll. The Reese Towpower 72783 is a prime example of what a hitch lock should be: durable, rugged, and simple to use. Of course, it is affordable, too.

I hope that this guide was able to help you in choosing a trailer lock. If you have some questions or suggestions, just feel free to ask me in the comment section below!​

Best Trailer Hitch Lock Of 2018: A Complete Rundown
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