Top 9 Trailer Hitch Coupler Lock – Towing Hitch Locks

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Dia 1/4 Inch, Black, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler 1 Pack, CZC AUTO Black Trailer Hitch Coupler Lock

CZC AUTO #ad - Small size for easy carrying. If you have any question after receiving or using our trailer tongue lock, please contact us, your problem will be solved within 24 HOURS. The hitch lock is coated with black electrophoretic paint to prevent corrosion.

Coupler locking hitch pin's Application: Tow Trailer Boat RV Truck Car. Security of our coupler locking pin: this trailer lock is made of high-strength steel to deter theft. How to operate our trailer tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock. Czc auto trailer hitch coupler locking pin design:1/4 inch diameter tongue lock pin with effective length 3/4 Inch.

Please verify dimension and length of the pin you want before purchasing our coupler hitch lock pin. Keeping the coupler lock in your pocket or vehicle anywhere that is fine. 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.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number11410



High Security 6-Pin Cylinder, Buy American Act Compliant, PACLOCK's UCS-88A Trailer Coupler Lock, Blue Anodized Aluminum, One Lock Keyed to a Number U-Pick! w/ 2 Keys, Hidden Shackle

PACLOCK #ad - The pac-tether ensures that you'll never lose your lock! American manufacturer made in usa w/ global components by a family manufacturer hiring veterans & people with disabilities. High security ultimate security with bolt cutter-proof hidden shackle design and pick/bump resistant 6-pin cylinder that allow for over 20, 000 different key codes.

Every lock, one key with paclock, you can use the same key to open your trailer, gate, job box, and more! Order your locks to the same key code to have all of them keyed alike! Have an employee walk off with your key? No problem! UCS gives you the ability to immediately change keying or easily re-pin your padlocks in a matter of minutes. Unbeatable customer support and exceptional lead times as locks are built and shipped within 24-48 hours! Ucs compatible only compatible with ucs series locks.

Already have cylinders but need padlocks? Go less cylinder! Innovative design designed for trailer couplers! please measure your application in advance to ensure the lock is the right fit. As the only retail padlock with full stainless-steel pins, the UCS cylinder is a beast. If you have our standard rekeyable Series locks, please search for “TL88A”.
BrandPACLOCK #ad
ManufacturerPacific Lock Company #ad
Height3.25 Inches
Length2 Inches
Weight0.85 Pounds
Width1 Inches
Part NumberPLC10631110227010101010000

3. Master Lock


2", and 2-5/16" Couplers, Trailer Locks #389DAT, Master Lock, Universal Size Fits 1-7/8"

Master Lock #ad - We can not key two 2 of these locks the same. Universal coupler lock fits virtually all 1-7/8", 2", and 2-5/16" trailer couplers. The bright red finish discourages thiefs from messing with your trailer. Advanced locking mechanism resists picking and prying. Simple installation and removal. Resists rust and corrosion. The only difference between this one 389DAT and the 379KA is the color. The similar 379KA coupler locks are available keyed alike. This lock protects unattended trailers and guards against tow-away theft.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height7.5 Inches
Length6.5 Inches
Width4 Inches
Part Number389DAT
WarrantyMASTER LOCK PRODUCT WARRANTY Limited Lifetime Warranty Master Lock Company LLC (“Master Lock”) grants the following warranty: If this product or any part of the product fails due to a defect in materials or workmanship at any time during the life of the product, Master Lock will, at its own discretion, repair or replace the product or part free of charge. Simply contact Master Lock at or 1.800.464.2088 for instructions on obtaining repair or replacement.

4. Reese


Adjustable Storage Security, Heavy-Duty Steel, REESE Towpower 72783 Universal Coupler Lock

Reese #ad - Guards against truck or trailer towaway theft in storage. 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. Built to last: the reese towpower universal Coupler lock is a premium lock constructed with an aluminum body and heavy-duty steel lock bar. Dimensions: 9” x 9” x 3”.
BrandReese #ad
ManufacturerReese Towpower #ad
Height9 Inches
Length9 Inches
Weight1 Pounds
Width3 Inches
Part Number72783
Warranty1 Year



Dia 1/4 Inch, CZC AUTO Trailer Tongue Coupler Lock, 2-1/2 Inch Span Fits Latch-Type Coupler for Towing Boat Truck RV Car Trailer

CZC AUTO #ad - Made of high-strength steel and coated with black electrophoretic paint, the 1/4 inch trailer coupler lock is good at detering theft and preventing corrosion. We offer 30-day money-back for any reason, simply contact us, 12-month warranty for quality-related issues.

Please verify the size before purchasing our trailer hitch coupler pin lock 1/4 inch. Security of our coupler locking pin. 1/4 inch diameter black tongue lock pin with 2-1/2 inch effective length. The watertight rubber cap keeps rain, snow, ice and dirt out. Fits latch-type couplers for towing boat truck RV car. Czc auto - reliable brand in towing sercurity industry. Our 1/4 inch trailer tongue lock push-to-lock design without key, after hearing "click", you just need to pull the lock head to ensure it is working.

Czc auto trailer hitch coupler locking pin's design. Zinc alloy tubular lock core and more solid round key also help to improve security of the black coupler lock. Any issue in using our trailer hitch coupler lock, your problem will be solved within 24 HOURS. Kinds of weather can be handled. Application of the 1/4 trailer pin lock. Easy to operate coupler latch lock.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number11406



Up to 3/4-Inch Span, CURT 23521 Black Trailer Tongue Coupler Lock, 1/4-Inch Pin Diameter

CURT #ad - 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. For your convenience, two keys are included with this trailer tongue lock.

To help protect your trailer from theft, this trailer lock is made from high-strength steel and has a padlock-style design. Versatile. 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. Easy to operate. Weather-resistant. Two keys included. Dependable security. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access. 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.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.45 Pounds
Width2 Inches
Part Number23521
WarrantyLimited Lifetime Warranty (One-Year Finish, One-Year Parts)

7. Trimax


Trimax TMC10 Coupler / Door Latch Lock fits couplers to 3/4" span

Trimax #ad - Protective rubber bumper prevents rattling and abrasion. Protective rubber cap protects keyhole from water, grime, and dirt. Fits couplers with up to a 3/4" span. Resists attempted drill outs. Internal o-ring in lock keeps water, grime and dirt out of locking mechanism to ensure years of use. Type a key which is a spring loaded, high security key. Rugged and durable, 7 pin, the key will not bend or break.
BrandTrimax #ad
ManufacturerTrimax #ad
Height5.1 Inches
Length1.5 Inches
Weight0.71 Pounds
Width3.9 Inches
Part NumberTMC10
WarrantyLifetime Warranty

8. Master Lock


Master Lock 605DAT Trailer Coupler Padlock, 2 Pack

Master Lock #ad - Limited lifetime warranty. Works on all 1-7/8" and 2" coupler latches, but not all 2-5/16". Opening measures exactly 3/4". Solid brass case for corrosion resistance. Matching colored keyhead for added convenience. These locks are NOT keyed alike. Simple installation and removal. This listing is for two 2 solid brass coupler latch locks. Protected case-hardened steel shackle resists cutting and built-in anti-sawing pin for maximum protection.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height5.56 Inches
Length0.9 Inches
Weight1 Pounds
Width3.5 Inches
Part Number605DAT
WarrantyAs Labeled



1/4” Dia Trailer Coupler Lock with 3/4” Inch Span, 5/8” Dia 3-1/2” Long Trailer Hitch Lock Receiver Pin Lock for Class III IV Receiver, METOWARE Keyed Alike Trailer Hitch Receiver& Coupler Lock Kit

METOWARE #ad - And the dust cap aims to keep the keyhole away from water and dirt, you can easily push to lock it without using key. Coupler lock features – made of premium strength steel and coated with electrophoretic paint, boat, our trailer hitch is durable and rust-proof. To open it, great design for easier using.

It is reliable for long-term hauling and is secure for full protection, safely protecting your trailer, camper and so on from theft. The tow hitch can be installed quickly and easily so that you can hoop up and head out right away. Safe & easy to use coupler lock - our coupler locks are easy to operate with screw-type locking action -- just turn the key 5-7 times to open or lock, save your time and effort. With the push-to-lock design, just turn the key a little bit and the pin will pop out by itself. Please confirm your required size or email us for more suggestion before having the order.

Safe & easy to use reciever lock - our trailer coupler lock is designed for easy operation. Reciever lock feature - the trailer hitch receiver lock pin is designed with 5/8" diameter and 3-1/2” long to make it works well with class III IV hitches, big towing vehicle, truck, 2” 2-1/2” hitch receiver. Metoware keyed alike trailer hitch receiver& coupler lock kit, 5/8” dia 3-1/2” long trailer hitch lock Hitch Receiver Pin Lock for Class III IV Receiver, 1/4” Dia Trailer Hitch Coupler Lock with 3/4” Inch Span.
ManufacturerMETOWARE #ad
Part Number47272