Best Coupler Lock in 2022 : Top 12 Reviews & Buying Guide

Many people rely on their trailer hitch locks to keep items safe and secure. It is important to find the right type of hitch lock because not all locks are created equal.

You should make sure that you purchase a lock that will fit your needs as well as work with any special features of your trailer.

These locks can be found in many different shapes and sizes. The purpose of the coupler trailer hitch lock is to act as an extra layer of protection so that people cannot just walk up and remove items without authorization.

In this article, we will discuss the best coupler locks available on the market today. We’ll start with some background information on these types of locks before diving into reviews for the top 12 models available today.

Top 12 Best Coupler Locks Review

Let's take a look at the top coupler locks available today.

1. REESE Coupler Lock Towpower 72783

This versatile trailer hitch lock from REESE Towpower secures and protects your trailer. Bright yellow makes it easy to see and discourages thieves. It has six positions for locking, as well as a ratchet mechanism.

This premium hitch lock features a body made of aluminum with a steel lock bar made of heavy-duty steel. It stands out to deter thieves and is known for its durability. The adjustable ratchet design can be adjusted to fit 1- 7/8", 2", and 2- 5/16" couplers.

This Reese Towpower strong security deters thieves from stealing your equipment and is built to last with a universal fit design, making it among the best trailer hitch locks on the market. This high-strength coupler lock guards against theft from the back of your vehicle.

The advanced lock resists picking, prying, and drilling-outs, so you're confident that your equipment will be protected, no matter where it's parked or stored. It has a bright yellow color and a premium lock to deter theft.

Highlighted Features:

• Secure and protects your trailer
• Six positions for locking, as well as a ratchet mechanism
• Made of durable materials (Aluminum, steel)
• Resists picking, prying, and drilling-outs against theft
• It has a bright yellow color and a premium lock to deter theft

2. Master Lock 389DAT - Trailer Locks - Universal Size Fits

Master lock trailer hitch locks are available in a variety of sizes to accommodate 1-7/8", 2" and 2.5/16" for virtually any type of couplings when locking your trailer from theft when not being used or during transport.

They allow you to secure trailers that have been left unattended, which protects the trailer against thieves looking for an easy target.

With this lock in place, the master lock becomes more difficult for them to steal what is within your frame's cargo area by prying open the truck bed with a crowbar.

The intense red color from the master lock will also deter thieves who may get scared seeing such an intense color on something meant to secure their loot.

This universal size fits all couplers. It has easy installation and removal, along with a simple lock mechanism that prevents theft and unauthorized access.

The Master Lock is a great option for trailers because the locks are very affordable compared to other coupler hitch locks out there, which means you don't have to worry about them being stolen if they were broken into.

Highlighted Features:

• The master lock provides an extra level of security for trailers
• Easy installation and removal with a simple lock mechanism
• Confidently prevents theft and unauthorized access
• The Master lock universal size fits all couplers
• The intense red color wards off thieves

3. AUTO CZC Black Hitch Lock Trailer Hitch Lock

CZC Black trailer hitch lock 1/4 inch tongue pin, 3/4 inch effective length, 2 flat keys for backup and use.

To open the key, insert the key, and then turn it 5-7 times. Align the hitch pin with the keyhole. Finally, lock the key by turning it 5-7 times.

The CZC AUTO trailer hitch locks are constructed of steel that is highly durable, so they will deter theft while being coated in electrophoretic black paint, which prevents corrosion. They are also very small in size, so they fit easily in a pocket or vehicle.

The trailer hitch lock can be opened with a key or by spinning the flat key 5-7 times to open/close the lock. The locking mechanism can be found on either side of where you attach to your coupler hitch.

Which makes it very easy to use as your master lock while still providing an extra level of security, making sure that anyone wants to take something that does not belong to them. They'll have trouble getting away with it.

The CZC AUTO trailer hitch lock is also used for when you are towing a boat or RV and would like that extra sense of security in case someone wishes to cut your trailer hitch lock or hitch pin.

Highlighted Features:

• Composed of durable steel and coated with electro-pigmented black paint
• Keys provide you with an easy way to open and close the coupler lock
• An extra measure of security when towing a boat or RV
• Provide a level of security and control to the trailer or truck

4. Trimax UMAX100 Black trailer hitch lock Universal Dual Purpose Premium

The Trimax UMAX100 is a dual-purpose coupler lock. It is crafted from high-quality material and can even be used both indoors and outdoors.

This lock has an attractive nylon ballistic cover that can absorb blows from hammers and is designed to protect against weather as well as resist drilling attempts with its type A key that's made of 16mm steel, 1/2 turn technology with no false locking, dual ratchet system with 10 teeth for 3/8".

If you also want to secure your items by using chains or cables as well as including a Trimax Coupler Lever Lock, This product offers total protection from hardened steel for unattended trailers.

The Trimax UMAX100 trailer hitch lock is easy to install and has a simple design. Simply push the ball through the coupler and install the U-shackle. As a result of its high quality, this product comes with the assurance of complete satisfaction.

Highlighted Features:

• Made of high-quality material that resists corrosion
• It can be used both indoors and outdoors
• Offers total protection from hardened steel for unattended trailers
• Simple design, easy to install
• It comes with the assurance of complete satisfaction

5. Shoreline Marine Coupler Lock for Trailer

The Stainless Steel Coupler Lock, Type Screw Type from Shoreline Marine provides a simple, effective solution to your trailer's security. It is extremely simple to install and includes two keys.

This lock has been treated for corrosion resistance, durability, and rust resistance. You can be certain that it will provide long-lasting service. The hitch locks are heat-treated to keep them functional even in saltwater.

This type of lock can be used at many different places, such as a commercial parking lot or an apartment complex where items need to be protected from theft.

It can also help provide security to your recreational vehicle, camper, boat, trailer, truck bed cover, and cargo boxes attached to all types of vehicles, including boats and RVs.

This type of lock is recommended anywhere that objects need protection from theft or tampering.

Highlighted Features:

• An easy-to-install product
• It comes with two keys
• Rust-resistant, corrosion-resistant, and heat-treated
• for use in trucks, trailers, RVs, and boats
• Help protect areas at risk of theft with this product

6. CURT Black 23521 Trailer Coupler Lock

CURT Black trailer hitch lock is perfect for securing trailer couplers to protect your boat, camper, and utility trailers from thieves.

The CURT black trailer hitch lock has many features making it the best trailer lock available. It features a padlock design that is key-operated with 1/4-turn locking activation for convenience.

This makes it easy to open, operate then close periodically when not in use, reducing wear on both lock and coupler surfaces.

In addition to the lock, this CURT trailer hitch lock has a 1/4-inch pin diameter and a 3/4-inch max span for fitting all standard-size couplers.

A black zinc plating adds an extra level of corrosion resistance as well as a stylish look. These hitch locks offer a safety pin design that keeps your boat, camper, or utility trailer attached to your tow vehicle while deterring theft with a heavy-duty look and style.

With its durable steel construction and convenient key-operating design, this CURT black trailer hitch lock is built to last even when used regularly for outdoor purposes.

Trailering safety starts by properly locking your boat, camper, utility trailer, or other attachable equipment to your tow vehicle with this CURT black coupler lock.

Highlighted Features:

• Padlock design operated by key
• 1/4 turn locking activation for convenience
• Black Zinc plating adds corrosion resistance and style
• Durable steel construction, convenient key operating design

7. Tow Ready Coupler Lock 63228 for 2" Couplers 'Gorilla Guard'

The Tow-Ready trailer hitch lock is an easy, affordable way to increase the security of your trailer. It protects against theft by barricaded thieves that are unable to use tools or other mechanisms for unlocking.

The unit features a keyhole opening that accepts one practical ball key, making it possible to pull up the locking pins without damaging anything.

Install this tough yet inexpensive lock on your 2” trailer coupler, and you can rest assured knowing your belongings will remain safe and sound while you are busy with other things.

The trailer hitch lock is easy to use and can even be installed without any tools. Tow Ready's Gorilla Guard trailer Lock will keep your trailer safe from theft.

It will fit most trailer couplers of 2-inch length and features a steel bar. The Gorilla Guard locks using a ball socket, and there are two keys included so that you have one on hand while the other is in storage.

This lock provides maximum protection for trailers that are not being tended to by protecting them from tampering devices.

Highlighted Features:

• Keyhole opening accepts one practical ball key for an easy pull-up
• Easy to use, can be installed without tools
• It fits most trailer couplers of 2-inch length with a steel bar
• Protects trailers from tampering devices

8. AMPLOCK RV/Trailer Hitch Lock U-BRP2516

Beyond a good locksmith, car owners need to realize that trailers come with their unique security concerns. One of the best ways to protect a trailer, whether it is on a truck bed or hitch-mounted, is by installing an AMPLOCK lock. The AMPLOCK locks have been designed with both style and practicality in mind.

They are made from corrosion-resistant stainless steel for lasting use and offer two key options so the coupler can be shared with loved ones. Plus, there is no need to worry about picking this locking system open as it has millions of potential key combinations built right into its design.

When you buy an AMPLOCK coupler lock, there are pieces that can be used on either side of the trailer to securely attach the lock. To ensure 100% theft prevention, it's important to use this special locking system on both sides of the couplers or parts attached to your trailer hitch.

Some nice features about these locks include the fact that they are 12 pounds of stainless steel that prevents thieves from cutting through the metal and making it easier to identify when someone is stealing from you.

Beyond the material of the lock, there is a unique rotating face that prevents people from trying to drill through this AMPLOCK system and crack its security code. The best part about these trailer hitch locks is that they come with an adjustable design which allows the cylinder to be locked in place without any extra effort.

To make it even more secure when in use, there's also a swivel feature added in so attachments can't create too much traction and pull apart this lock while it's locked in place.

Highlighted Features:

• Corrosion-resistant stainless steel for lasting use
• Two key options to share trailer lock with loved ones
• Millions of potential key combinations built into the design
• 12 pounds of stainless steel that's hard to cut through
• Security code can't be cracked because of the rotating face
• Swivels increase safety against attachments pulling it apart

9. Blaylock TL-33 American Metal Coupler Lock

Keep your trailer secure from opportunistic trailer thieves with the Blaylock TL-33 Universal Coupler Lock. This lock fits a coupler that has a width of fewer than 2 1/2 inches and weighs only 3 pounds.

It features a customized design for easy application to most couplers and includes three different height settings to make it compatible with almost any truck or cargo carrier.

The patented design means this safety device offers the best way for you to leave your trailer unprotected without taking too much space up in your vehicle's storage compartment, as other locks may do.

Solid, hardened steel provides security for this product, while high-grade aircraft aluminum ensures durability and ease in portability and storage.

Designed with 3 pins, it makes it compatible with a wide variety of couplers, and the lock rod is designed for easy application to most couplers.

The lock is made of solid, hardened steel for maximum security when you're not with the trailer and high-grade aircraft aluminum for strength and durability. This patented design allows you to lock a trailer or cargo carrier without taking up a lot of space in the vehicle's storage compartment.

Highlighted Features:

• Compatible with a wide variety of couplers
• Solid, hardened steel for maximum security
• High-grade aircraft aluminum for strength and durability
• Designed with 3 pins

10. Turnart Adjustable Trailer Lock - Universal Size Fits Heavy-Duty Steel

The Turnart trailer lock is easy to install and fits any 1-7/8", 2", and 2-5/16" couplers. The locking mechanism is extremely secure and will resist picking, prying, or drilling.

This lock features aluminum construction with a heavy-duty steel bar for maximum corrosion resistance, providing you with a durable option for locking your trailer or truck bed so that groceries don't go missing or other valuables don't get taken.

Turnart locks are made with heavy-duty steel that resists cutting when properly installed, keeping your valuable belongings safe from theft while you're out having fun.

This heavy-duty aluminum body trailer lock is designed to be easily attached in seconds on all types of trailers, and it is corrosion-resistant. This locking mechanism uses a key-operated cylinder which provides anti-theft protection.

The bright color yellow is super visible and durable for trailers to keep them safe while enjoying your life.

Turnart Trailer Lock is equipped to face the outdoor elements, featuring an included dust cap that protects the internal locking mechanism and parts of the lock from rainwater and other corrosive elements.

Highlighted Features:

• Easy to install
• Fits any 1-7/8", 2", and 2-5/16" couplers
• Resistant to picking, prying, or drilling
• Made with heavy-duty steel that resists cutting when properly installed
• Easily attached in seconds on all types of trailers

11. METOWARE Black Trailer Coupler Lock

The METOWARE coupler hitch lock is designed with a robust locking pin to give you the security that your items will stay where they belong. Its heavy-duty design and high-quality components ensure an item stays secure for a long time without breaking apart, giving you peace of mind while traveling.

The lightweight design allows even frequent travelers to easily carry their key chain around and not wear themselves down from carrying too much weight. This product includes two keys so that if something happens to one or both of them, it's easy to fix.

The metal components are coated in electrophoretic paint for durability and strength without scratches or rust. The lock itself is easy to open and close with a simple screwing motion, saving you hassle when locking or unlocking your trailer hitch. The trailer lock fits most trailers, boats, vehicles, and rucks with little risk of failure due to its universal design.

METOWARE trailer hitch lock is designed to be easy to use and install so that even beginners have no problem carrying out the process without any hassle or headache. These tow hitch locks are built for strength and function, but also aesthetics allowing you to look good while safely traveling down the road.

Highlighted Features:

• Robust locking pin for security
• Lightweight design with two keys included
• Electrophoretic paint for durability and strength
• Universal design for compatibility with most vehicles

12. LCGP Black Trailer Hitch Lock with 2 Keys

The LCGP trailer hitch lock is a black lock with 2 keys for locking couplers. These locks are made of aluminum and have steel on the lock, so they are strong against metal cutting, picking, prying, or drilling outs. They also help to prevent truck tow-away theft when the trailer is not in use.

Owners need this level of security to guard their property against being stolen while stored, even if it is just for a few hours. The locks are easy to install by putting the shaft through the coupler of the truck and then locking it into place with the end cap at the other end, where it connects with metal.

The owner can use this lock for 1-7/8”, 2”, and 2-5/16” couplers. The LCGP Coupler Lock also prevents theft by providing added protection while owners are not around, whether their trailer or truck is parked in storage or on the side of the road.

These locks are corrosion-resistant. This means that these locks will not rust because of water exposure or long-term exposure to elements. The metal bars are solid and strong, while the aluminum is lightweight but durable.

Owners need 2 locks in order to secure their vehicle while not in use against theft because thieves can bypass using one key by using bolt cutters if they cannot get past any other lock system. This will keep your item safe even when left unattended for a few minutes due to running an errand at a store around the corner or doing laundry at a local business.

Highlighted Features:

• Easy to install
• The lock is made out of aluminum and steel
• Corrosion-resistant locks that will not rust
• Solid metal bars that are strong and durable

Facts to Check While Buying Trailer Coupler Locks

When it comes to trailer hitch locks, there are a few things you need to take into consideration before making your purchase.

Easy to Install

You want to be able to install your coupler locks without too much hassle and trouble. This is why you should take a look at the installation process of locks before you purchase them.

Strength

Hitch coupler locks should be made of steel or stainless steel since they will offer the most protection against any type of outside harm (such as water, rust, dust, etc.). It's recommended that you purchase products that provide an alloy coating because it'll help prevent corrosion and rusting over time.

Some materials may also include neoprene rubber which provides extra grip on surfaces. They tend to last longer than other materials because they are abrasion-resistant.

Hitch couplers are usually made out of steel, which means that all lock brands will have steel parts in their system. You need to ask yourself how strong the lock is overall. The best trailer coupler lock has strong locking bars that cannot easily break off while also having high-quality padlocks, so it's difficult for thieves to pick or use bolt cutters for opening.

Security

Your locks need to have increased security for your safety. This is why you should note what type of lock system each brand has to offer, such as a locking pin or keyed lock.

Suitability

You need to check the suitability of each brand and that it will be compatible with your vehicle. You can get this information by reading reviews from previous buyers who have already tried out different brands.

Ease of Use

Some locks come with complex instructions that you need to follow while setting them up, which can be a hassle. The easier the instructions are, the better off you will be when installing these locks.

This is why it's a good idea to take a close look at each brand’s instructions before purchasing so that you know what type of lock system to expect from using it.

Versatility

You want coupler locks that can be used on various types of vehicles, trucks, and trailers. This is why you need to make sure your lockset works with most brands before purchasing it.

To ensure you are buying the best trailer hitch locks available, take a look at all the factors mentioned above before making your purchase. You'll be able to secure your vehicle without too much hassle or trouble if you stick to what each brand has to offer

Locking mechanism

The lock should provide security by locking the coupler to the trailer hitch. This is done by either a pin or key locking mechanism.

The coupling range refers to how far your coupler can be lifted off your ball before it disengages altogether.

Some brands have good coupling ranges, while others do not. Coupling range is important if you want to protect the front end of your vehicle when backing up or braking in reverse gear.

Weather resistance

Make sure your coupler locks are resistant to rain, wind, and dust.

Some brands even have UV resistance which is a nice feature since they'll last longer under different weather conditions.

Corrosion-resistant

It's very important to make sure your universal coupler lock is corrosion-resistant since you want the metal parts not to rust. For example, some brands have a zinc coating that will prevent rusting for increased durability.

Protective finish

You need to check what type of protective finishes are on each brand to know which one will work best with different weather conditions or climates. Some brands have paint or powder coatings, while others have rubberized grips. Make sure your product has an outer layer that provides high resistance against rust and abrasion.

This will be worth it in the long run because the lockset should provide security without being easily damaged by abrasive surfaces. Having layers also ensures that your universal coupler lock will last longer than three years without needing to be replaced.

Hinge

Having a universal coupler lock with a hinge will provide great security and ease of use. It's important that you can open your lock-up quickly whenever necessary, so this is why it's recommended to get locks with hinges.

For instance, levers on the outside of the hitch pin make it easy for you to open up the lockset while also providing additional layers of protection against picking or cutting attacks. Many brands offer the best locking hitch pin like these, as they provide security yet still allow quick access when necessary.

Price

Price is always an important factor to take into consideration when researching coupler locks. You can find great deals online, but you need to ensure the price isn't low for cheap's sake. That means it will not be durable or provide security at all.

As a general rule of thumb, the more expensive your product is, the higher quality materials it should have inside them, which leads to increased durability.

Remember that this lock system will be additional protection against thieves who are looking to steal items off of your vehicle without permission. Even if it costs more than what you think is necessary, having a sturdy lock with adjustable depth settings and strong hinges will be worth it in the long run since you won't have to replace the lockset for years.

Warranty

Each brand should offer some sort of warranty as protection from defects or damages caused by faulty manufacturing or workmanship.

Make sure you do take a look at each brand's gift packaging as well as their warranty terms and conditions before making your purchase.

Additional Tips

Match With trailer tongue size

The best coupler locks will be suitable for different trailer and truck sizes. Make sure you get a size that matches the height and width of your vehicle's receiver and tongue.

Presence of dust caps

These are important if you want to extend the life of your pins because it keeps them from rusting. Dust caps should unscrew easily, so make sure your product has these if they're available.

Read reviews

This is where reviews come in handy since other customers will usually write about their experiences with the product, which can help you determine its pros and cons compared to others on the market.

FAQ's

1. How does a trailer lock work?

Answer: A trailer lock has two main parts. The first part is the locking pin that runs through the trailer's hitch, and the second part is the coupler lock which should be inserted in between both of them.

The idea behind this advanced locking mechanism is to make it so other people can't remove your trailer or truck without authorization. It acts as an extra level of security while you're traveling because nobody will be able to walk up to your vehicle and just take off with it.

2. How do I Know Which Size Fits My Car?

Answer: You'll need to check what size of locksets are available for each brand before you buy one since the measurements vary depending on each product's design. You'll find 1-inch models that fit into 1-inch receivers, 2-inch models that fit into 2-inch receivers, and so on.

3. How do you lock a trailer so it can't be stolen?

Answer: The best way to keep a trailer safe from being stolen is to have a sturdy coupler lock that enables you to secure it into the receiver hitch lock of your vehicle. When you're traveling, having a lock with a locking pin will provide an extra layer of protection without needing too much hassle since it will be hard for thieves to get past them.

3. Which types of trailers are compatible with these?

Answer: In general, most coupler locks should work with different types of trailers, so this isn't something you need to worry about. However, if your product comes with specific instructions on which locksets fit certain sizes of ball mounts and pintle hooks, then pay attention because some brands may not be compatible with these components.

4. How does a master lock work?

Answer: A master lock is basically a hitch-mounted coupler lock that should be locked through the truck's hitch and the trailer's tongue.

The master lock usually has to lock pins on both ends, one of which should be inserted in between the master coupler pin and the connector piece of metal.

The master lock then helps to protect against theft or unauthorized removal while you're traveling because it acts as an extra level of security. It can also be used to help guard against thieves who are looking to steal items without authorization.

5. Are locking hitch pins safe?

Answer: The lock on your hitch pin is a smart way to deter thieves from taking off with your trailer without permission. But they might not always be safe depending on the type of material used for the one you have in mind.

For instance, some locks come with thick steel pins, which provide extra resistance against cutting or sawing tools, but these could also damage your vehicle's receiver if someone tries to pry them open using crowbars and vices.

6. How do I know if my coupler lock fits my trailer or truck?

Answer: In general, it's a good idea to check what coupler lock sizes are available for each brand before you purchase since the measurements vary depending on each model. You'll commonly find 1-inch locksets that fit into 1-inch receivers and 2-inch models that fit into 2-inch receivers.

7. How should I store my trailer coupler lock?

Answer: Before you leave your vehicle unattended or park it at a public facility, always put away your trailer coupler lock. This will keep them from getting lost or stolen while you're not looking after them, so they won't be easy targets for thieves.

8. Should I lock my trailer hitch?

Answer: In general, locking trailer hitches is a good way to keep them from being stolen since they're typically hidden underneath your vehicle's tailgate.

But you need to avoid leaving your keyhole exposed at all times because someone can take advantage of this and try to break into it using tools like screwdrivers and crowbars.

9. How long will my coupler locks last?

Answer: There are many factors that affect the lifespan of every type of hitch pin on the market, such as how often you use them, what brand you buy, how much wear and tear they're exposed to, and so on.

Last Thoughts

We hope this blog has been helpful in providing information on how to choose the best trailer hitch locks as well as coupler locks for your needs.

Make sure you select a product that will provide sufficient security and protection while also fitting securely into your vehicle's receiver.

Don't forget to comment below if you have any follow-up questions, concerns, or feedback.