10 Best Trailer Hitch Lock of December 2025

• DIMENSIONS: 9” x 9” x 3”
• BUILT TO LAST: The REESE Towpower Universal Coupler lock is a premium lock constructed with an aluminum body and heavy-duty steel lock bar.
• UNIVERSAL FIT: Ratchet design is adjustable with 11 locking positions and fits 1-⅞”, 2”, and 2-5/16” couplers.
• DETERS THEFT: Bright, deterrent yellow color is durable, highly visible, and an essential accessory to all types of trailers.
• SECURE PROTECTION: Easy-to-install lock resists picking, prying and drill outs. Guards against truck or trailer towaway theft in storage.

Reese

• [Higher Security and Theft Deterrence] The trailer receiver lock is made with high-strength steel. So that the trailer hitch pin lock can ensure locking safe and protect your trailer and trailer hitch ball mount from theft.
• [Compatible with Most Hitches] With a 5/8-inch diameter hitch pin and 2-3/4 inches of effective pin length, our trailer hitch receiver lock fits 2-inch any receiver tubes, and it is suitable for class V hitches.
• [Durable and Watertight] The all-weather cover cap of our trailer hitch lock keeps the keyhole away from water and dust. The dustproof and waterproof lock pin is more durable.
• [Stronger Copper Keys] This trailer hitch lock come with two keys. The keys made of copper and covered non-slip protective, fit our upgraded zinc alloy lock core, which is more solid and stronger than ordinary keys.
• [Prevent Rattling Noise] When you are using a trailer hitch, you might run into some issues like rattling and noise. Our trailer hitch lock pin is equipped with 4 rubber O-rings, which can effectively prevent rattling noise caused by shaking during towing.

METOWARE

• Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers
• Trailer lock is best used for vehicles, trailers, and RVs
• Trailer coupler lock features advanced locking mechanism to resist picking and prying
• Trailer hitch lock is constructed from zinc to resist rust and corrosion
• Includes one trailer coupler lock, two keys
• Nickel-plated, zinc die-cast body with a front access key-way for ease of accessibility
• One of the unique features of this product is the ratcheting shaft which allows it to fit most 1-7/8 inch and 2 inch couplers

Master Lock

• CZC AUTO Trailer Hitch Coupler Locking Pin Design：1/4 Inch diameter tongue lock pin with effective length 3/4 Inch. Small size for easy carrying. Keeping the coupler lock in your pocket or vehicle anywhere that is fine. Please verify dimension and length of the pin you want before purchasing our coupler hitch lock pin.
• How To Operate Our Trailer Tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock.
• Security Of Our Coupler Locking Pin: This trailer lock is made of high-strength steel to deter theft. The hitch lock is coated with black electrophoretic paint to prevent corrosion.
• Coupler Locking Hitch Pin's Application: Tow Trailer Boat RV Truck Car
• CZC AUTO - A Reliable Brand In Hitch Sercurity Industry: We offer 30-day money-back guarantee for any reason, 12-month warranty for quality-related issues. If you have any question after receiving or using our trailer tongue lock, please contact us, your problem will be solved within 24 HOURS.

CZC AUTO

• DEPENDABLE SECURITY. To help protect your trailer from theft, this trailer lock is made from high-strength steel and has a padlock-style design
• EASY TO OPERATE. This padlock-style trailer tongue lock has a heavy-duty look to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed
• VERSATILE. With a 1/4-inch diameter pin, this trailer coupler lock fits latch-type couplers with a maximum span of up to 3/4 inches
• WEATHER-RESISTANT. This trailer pin lock is protected from the elements with its black painted finish, while the coupler pin is shielded against corrosion with a durable zinc plating
• TWO KEYS INCLUDED. For your convenience, two keys are included with this trailer tongue lock. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access

CURT

• Universal, fits all couplers
• Secures trailer when not being towed
• Ratchet design with eleven locking positions
• Fits 1-7/8, 2 and 2-5/16 inch trailers
• Two theft proof square keys are included

Reese

• Designed to provide excellent towing
• Lockable offering extra safety
• Includes swiveling clip
• Includes swiveling clip
• Easy to install

Reese

• DEPENDABLE SECURITY. To protect your trailer and trailer hitch ball mount from theft, this locking hitch pin is made with high-strength steel construction
• EASY TO OPERATE. The barbell-style locking hitch pin promotes an impenetrable appearance to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed
• VERSATILE. With a 5/8-inch diameter pin and 2.85 inches of usable pin length, this receiver hitch lock fits virtually any 2-inch x 2-inch hitch receiver with a 5/8-inch hole (not compatible with double-walled receiver tubes)
• WATERTIGHT. The internal components of this hitch lock can easily be protected from the elements with the included watertight dust cap, while the entire hitch lock is shielded against corrosion with a durable powder coat finish
• TWO KEYS INCLUDED. For your convenience, two keys are included with this trailer hitch lock. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access

CURT

• Universal coupler lock fits virtually all 1-7/8", 2", and 2-5/16" trailer couplers.
• This lock protects unattended trailers and guards against tow-away theft. The bright red finish discourages thiefs from messing with your trailer.
• Resists rust and corrosion. Simple installation and removal.
• Advanced locking mechanism resists picking and prying.
• We can NOT key two (2) of these locks the same. The similar 379KA coupler locks are available keyed alike. The only difference between this one (389DAT) and the 379KA is the color.

Master Lock

• [Push-to-lock Design] Our trailer coupler lock is designed for easy operation. With the push-to-lock design, you can easily push to lock it without using key. To open it, just turn the key a little bit and the pin will pop out by itself.
• [Rust Protection& Durability] The electrophoretic paint on the surface of trailer pin lock with the addition of its watertight rubber cap, keep rust at bay even the lock always get soaked on any journey over wet or snowy roads, and keep the keyhole away from water and dirt.
• [Security Guarantee] Made of carbon steel, our trailer hitch is durably and strong. Its reinforced zinc alloy tubular lock core and stronger tubular keys improve the security.
• [Package Include] One lock pin ( 1/4" diameter 2-1/2" Span) + one lock head( 360°rotating design& water proof rubber cap) + two tubular keys ( one for standby).
• [Money Back Guarantee] Your satisfaction is what we strive for. If something goes wrong with your purchase, we will offer you a free replacement or a full refund. And if you have any question about the product, please feel free to contact us, click on 'Ask a question' button on the right hand side on this page and send us an email, we will make a quick and reliable response.

METOWARE