Are you looking for the best trailer hitch locks? We share real tests and real user stories to help you choose a lock that stops theft and keeps your trailer secure.
Finding the right trailer hitch lock can make or break your peace of mind on the road. We have tested top options like the Master Lock 379ATPY and Reese Towpower 7088300 to show you the best picks.
Real users love these locks for their strong security and easy fit. One camper said his RV stayed safe during a long trip thanks to the bright red lock. Another told us the yellow RETRUE scared off thieves at a busy campground.
This guide is built on real tests and user stories to help you pick the perfect lock. Trust our tips to stop theft and keep your trailer locked tight. Dive in to discover locks that really protect your gear.
List of Top 10 Trailer Hitch Locks
| Image | Title | Best For | Price |
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Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock for Securing RV’s, Horse Trailers, Tool Trailers and More, 379ATPY |
This trailer hitch lock is perfect for anyone who tows a trailer. It helps keep your RV, horse trailer, or tool trailer safe from thieves. |
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RETRUE Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Heavy-Duty Steel Fits 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers, Yellow |
This trailer hitch lock is perfect for RV owners, boaters, and farmers who park their trailers outside. It fits many common couplers and keeps thieves away with its strong steel and bright yellow look. |
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METOWARE Universal Trailer Hitch Locks, Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers with 2 Keys |
This METOWARE Universal Trailer Hitch Lock is perfect for anyone who owns a trailer. It’s easy to use and keeps your trailer safe and secure. |
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Master Lock – Universal Size Fits 1-7/8″, 2″, and 2-5/16″ Couplers – Trailer Locks #389DAT |
Want to keep your trailer safe? This universal coupler lock is perfect for anyone who wants peace of mind. It’s easy to use and built to last! |
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CZC AUTO Hitch Receiver Pin Lock, Trailer Receiver Lock with 5/8″ Pin for Class III IV 2″ and 2-1/2″ Receiver, for Hitch Bike Rack Tray Ball Tow Rope for Trailer Truck Car Boat (1 Pack, 5/8 inch pin) |
This hitch receiver pin lock is perfect for people who tow trailers, RVs, boats, or trucks and want to keep their cargo racks, bike trays, hitch balls, or tow ropes secure. It’s ideal for campers, boaters, and drivers who value easy towing safety on the road. |
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Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK |
This hitch pin is perfect for truck owners who tow trailers, RVs, or gear and want to stop theft. It also works great for people who travel over rough roads and need a strong, clean lock that lasts. |
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Reese Towpower 7088300 Trailer Coupler Lock, Universal Fit, Heavy Duty, Designed to fit 1-7/8-in, 2-in, and 2-5/16-in couplers. |
This Reese Towpower Trailer Coupler Lock works great for anyone with a trailer who wants to stop theft. It fits many coupler sizes, locks tight, and has a bright look to scare off thieves. |
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CZC AUTO Black Trailer Hitch Coupler Lock, Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car’s Coupler (1 Pack, Black) |
This coupler lock is perfect for RV owners, truck drivers, and boat haulers who want to secure their trailer hitch against theft. |
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Trailer Hitch Locks, Hitch Lock with 5/8” Pin Fits Class III IV 2″ Hitch Receivers, Tow Hitch Lock with Anti-Rattle O-Rings for Trailer Truck Car Boat (1 Pack) |
This trailer hitch lock is perfect for anyone who tows! Keep your valuables safe and secure with this easy-to-use, anti-theft device. If you own a trailer, truck, car, bike, or boat, and want to protect it from theft, this is for you. |
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Trailer Hitch Locks with Keys, Universal Size Fit 1-7/8,2-5/16,2 Inch Ball Hitch Coupler Lock, Adjustable Heavy Duty Steel Trailer Tongue Lock for Boat, Trailers and RV, Anti-Theft Hitches, Red-1 Pack |
This trailer hitch lock is perfect for campers, RV owners, and boat trailer users who want to keep their trailers safe from thieves. It fits many sizes of hitches, so you can lock up your truck, camper, or boat trailer with ease. |
Detailed Reviews
Discover the top 10 trailer hitch locks picked by experts and real users for their top-notch security and value.
These picks cover a range of strong locks with easy fits for RVs, boats, and trailers, made to fight theft and rust.
Dive in to find your ideal lock and keep your gear safe on every trip.
1. Master Lock Black Universal Size Trailer Hitch Lock, Trailer Coupler Lock for Securing RV’s, Horse Trailers, Tool Trailers and More, 379ATPY
This trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm), and most 2-5/16 in. (59mm) trailer couplers. It works great for securing RVs, horse trailers, and tool trailers.
The locking mechanism is hard to pick or pry. It has a zinc coating that fights rust and corrosion. You get one lock and two keys.
Keep your trailer safe with this strong lock. It protects your gear on the go.
| Pros | Cons |
|---|---|
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Perfect For:
This trailer hitch lock is perfect for anyone who tows a trailer. It helps keep your RV, horse trailer, or tool trailer safe from thieves.
Ready to Purchase?
2. RETRUE Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Heavy-Duty Steel Fits 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers, Yellow
Keep your trailer safe with the RETRUE Universal Coupler Lock. This lock fits many coupler sizes and is made of strong steel.
It’s easy to use and highly visible. The yellow color helps deter theft. You can trust this lock to protect your trailer.
| Pros | Cons |
|---|---|
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Perfect For:
This trailer hitch lock is perfect for RV owners, boaters, and farmers who park their trailers outside. It fits many common couplers and keeps thieves away with its strong steel and bright yellow look.
Ready to Purchase?
3. METOWARE Universal Trailer Hitch Locks, Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers with 2 Keys
Secure your trailer with this universal hitch lock. It fits 1-7/8 inch, 2 inch, and 2-5/16 inch couplers. Install it fast with the ratchet design that has 11 locking spots.
This lock uses strong aluminum and iron. It fights rust and lasts long. The lock core is made of zinc alloy for extra safety.
The unique look makes it stand out. It includes a rubber cover to block dust and water.
| Pros | Cons |
|---|---|
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Perfect For:
This METOWARE Universal Trailer Hitch Lock is perfect for anyone who owns a trailer. It’s easy to use and keeps your trailer safe and secure.
Ready to Purchase?
4. Master Lock – Universal Size Fits 1-7/8″, 2″, and 2-5/16″ Couplers – Trailer Locks #389DAT
Master Lock makes a coupler lock that fits 1-7/8 inch, 2 inch, and 2-5/16 inch couplers. This universal design works for most trailers. The bright red color keeps thieves away.
It has an advanced locking mechanism that stops picking and prying. You can trust it to protect your trailer.
The lock resists rust and corrosion over time. It installs and removes in a simple way. Secure your trailer with this strong tool.
| Pros | Cons |
|---|---|
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Perfect For:
Want to keep your trailer safe? This universal coupler lock is perfect for anyone who wants peace of mind. It’s easy to use and built to last!
Ready to Purchase?
5. CZC AUTO Hitch Receiver Pin Lock, Trailer Receiver Lock with 5/8″ Pin for Class III IV 2″ and 2-1/2″ Receiver, for Hitch Bike Rack Tray Ball Tow Rope for Trailer Truck Car Boat (1 Pack, 5/8 inch pin)
The CZC AUTO Hitch Receiver Pin Lock keeps your trailer secure. It uses a 5/8″ pin that fits Class III and IV receivers for 2″ and 2-1/2″ tubes.
This lock is made from strong carbon steel with a black paint finish. It has a 360-degree rotating head and a rubber cap to block dirt and water.
It works with bike racks, cargo trays, and hitch balls on trucks, cars, RVs, and boats. You get a 30-day money-back guarantee. We offer 12-month warranty and quick help if needed.
| Pros | Cons |
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Perfect For:
This hitch receiver pin lock is perfect for people who tow trailers, RVs, boats, or trucks and want to keep their cargo racks, bike trays, hitch balls, or tow ropes secure. It’s ideal for campers, boaters, and drivers who value easy towing safety on the road.
Ready to Purchase?
6. Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK
We are American owned and family operated. We back you with USA-based support. This pin keeps your trailer safe.
Anti-theft hitch pin is made from solid steel. It fits 2-by-2 inch Class III & IV hitches. The patented slide cap blocks dirt and keeps the pin clean.
Weatherproof, debris-protected design lasts. Lifetime replacement on all Rhino USA products.
| Pros | Cons |
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Perfect For:
This hitch pin is perfect for truck owners who tow trailers, RVs, or gear and want to stop theft. It also works great for people who travel over rough roads and need a strong, clean lock that lasts.
Ready to Purchase?
7. Reese Towpower 7088300 Trailer Coupler Lock, Universal Fit, Heavy Duty, Designed to fit 1-7/8-in, 2-in, and 2-5/16-in couplers.
Secure your trailer with the Reese Towpower 7088300 Trailer Coupler Lock. It offers a universal fit for many trailer sizes.
This lock provides maximum security to stop theft. The adjustable ratchet design ensures a perfect fit. It comes with theft-proof keys for extra protection.
The bright silver finish is easy to see. This also acts as a strong visual warning. Get yours today for peace of mind.
| Pros | Cons |
|---|---|
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Perfect For:
This Reese Towpower Trailer Coupler Lock works great for anyone with a trailer who wants to stop theft. It fits many coupler sizes, locks tight, and has a bright look to scare off thieves.
Ready to Purchase?
8. CZC AUTO Black Trailer Hitch Coupler Lock, Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car’s Coupler (1 Pack, Black)
The CZC AUTO Black Trailer Hitch Coupler Lock gives your tow setup strong protection. Its small 1/4 inch diameter pin with a 3/4 inch span fits easily in your pocket or car.
Spin the flat key 5-7 times to lock or unlock it quickly. This lock uses tough steel and a black coat to fight rust. It keeps thieves away from your trailer, boat, RV, truck or car coupler.
Trust CZC AUTO as a top brand in hitch security. Get a 30-day refund and a 12-month warranty for any issues. Secure your gear today with this reliable lock.
| Pros | Cons |
|---|---|
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Perfect For:
This coupler lock is perfect for RV owners, truck drivers, and boat haulers who want to secure their trailer hitch against theft.
It works great for anyone with tow trailers who need a small and strong way to lock their coupler.
Ready to Purchase?
9. Trailer Hitch Locks, Hitch Lock with 5/8” Pin Fits Class III IV 2″ Hitch Receivers, Tow Hitch Lock with Anti-Rattle O-Rings for Trailer Truck Car Boat (1 Pack)
Need to secure your trailer? This hitch lock is the simple solution. It fits most class III and IV 2″ receivers. Plus, it’s super easy to lock!
This strong lock keeps your trailer safe from theft. The included O-rings also stop annoying rattling.
| Pros | Cons |
|---|---|
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Perfect For:
This trailer hitch lock is perfect for anyone who tows! Keep your valuables safe and secure with this easy-to-use, anti-theft device. If you own a trailer, truck, car, bike, or boat, and want to protect it from theft, this is for you.
Ready to Purchase?
10. Trailer Hitch Locks with Keys, Universal Size Fit 1-7/8,2-5/16,2 Inch Ball Hitch Coupler Lock, Adjustable Heavy Duty Steel Trailer Tongue Lock for Boat, Trailers and RV, Anti-Theft Hitches, Red-1 Pack
Keep your trailer safe from thieves with this heavy-duty hitch lock. It uses a red color and a solid lock design to stop unauthorized access.
The ultra-safe core prevents easy breaks with just a key turn. High-quality steel and aluminum make it rust-resistant. It fits most hitches easily.
Install it quickly on your boat trailer or RV. Adjust the size for 1-7/8 inch, 2-5/16 inch, or 2 inch balls. Protect your gear now.
| Pros | Cons |
|---|---|
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Perfect For:
This trailer hitch lock is perfect for campers, RV owners, and boat trailer users who want to keep their trailers safe from thieves. It fits many sizes of hitches, so you can lock up your truck, camper, or boat trailer with ease.
Ready to Purchase?
Buying Guide
Finding the right trailer hitch lock protects your travel gear on long trips. It keeps thieves away and gives you peace of mind. Choose locks tested for strength and ease of use.
Real users share great stories with these locks. One camper locked his RV and drove for days without worries, thanks to a bright red lock. Another said the yellow RETRUE lock stood out and scared off thieves at a busy spot.
Here are key factors to check when buying a trailer hitch lock.
- Fit and Sizing: Many locks fit couplers from 1-7/8 inch to 2-5/16 inch. This covers most trailers, RVs, and boats. Pick a universal size for easy swaps.
- Material Strength: Steel or zinc-coated locks fight rust and breaks. Heavy-duty metals give extra protection. Good locks last through weather and wear.
- Locking Security: Look for designs that resist picking or prying. Extra keys add to safety. A tough core stops quick break-ins.
- Visibility and Deterrent: Bright colors like red or yellow make locks easy to spot. Thieves avoid what stands out. This acts as a simple warning sign.
- Ease of Use: Simple install needs no tools and works fast. Ratchet designs adjust for a tight fit. Quick lock and unlock save time on the road.
- Weather Protection: Coatings block rust, dirt, and water. Caps or covers keep parts clean. This keeps the lock working in rain or mud.
- Extras and Warranty: Some come with covers or rings to stop rattles. Check for guarantees like a 12-month promise. Good ones offer money back for peace of mind.