Top 10 Coupler Latch Lock – Towing Hitch Locks

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1. Master Lock

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3-1/2" Long Shackle x 9/32" Diameter Pin, Coupler Latch Lock, Master Lock, Trailer Locks 1471DAT

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Master Lock #ad - The lock prevents the coupler latch from moving, therefore preventing either the coupler to be removed from the ball, or not allowing a ball to be placed into the coupler.

Weather tough seal and water tight cap protects the lock from the elements. Chrome plated for improved wear and corrosion resistance. Fits ufp and surge brake couplers. It has a precision 4 pin tumbler mechanism that resists picking. The lock works when the trailer is either connected to the tow vehicle or when the trailer is unattached. This master lock protects and guards against tow-away theft. Pin length or dimensional fit is 3-1/2" wide with a 9/32" diameter pin which is a standard size on virtually all couplers.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height2 Inches
Length9.1 Inches
Weight0.75 Pounds
Width5 Inches
Part Number1471DAT
Model1471DAT

2. Master Lock

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2847DAT, Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock

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Master Lock #ad - Includes: one trailer coupler latch lock, two keys. Length. Lock application: Best used for vehicles, trailers, and RV hitch locks. Ease of use: six locking positions provide maximum flexibility; Rekeyable cylinder offers keyed-alike convenience. Specifications: coupler lock adjusts from 9/16 in. Durable design: Water-tight cap protects trailer hitch lock from moisture and dirt. To 2-3/4 in.
BrandMaster Lock #ad
ManufacturerMASTER LOCK COMPANY LLC #ad
Height2 Inches
Length7 Inches
Weight0.25 Pounds
Width4 Inches
Part Number2847DAT
Model2847DAT
WarrantyLimited Warranty

3. Reese

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Reese Towpower 7042100 Adjustable Coupler Latch Lock

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Reese #ad - 6 locking positions. 3/16 inch diameter pin fits most couplers. Flat key design. Adjusts from 5/8 inch to 3 inches. Nickel plated steel shank and brushed aluminum body.
BrandReese #ad
ManufacturerReese Towpower #ad
Height2 Inches
Length6 Inches
Weight0.2 Pounds
Width2 Inches
Part Number7042100
Model7042100
Warranty1 Year

4. Trimax

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

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Trimax #ad - Type a key which is a spring loaded, 7 pin, high security key. Resists attempted drill outs. Protective rubber bumper prevents rattling and abrasion. Rugged and durable, the key will not bend or break. Protective rubber cap protects keyhole from water, grime, and dirt. Internal o-ring in lock keeps water, grime and dirt out of locking mechanism to ensure years of use. Fits couplers with up to a 3/4" span.
BrandTrimax #ad
ManufacturerTrimax #ad
Height5.1 Inches
Length1.5 Inches
Weight0.58 Pounds
Width3.9 Inches
Part NumberTMC10
ModelTMC10
WarrantyLifetime Warranty

5. CZC AUTO

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Black, 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

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CZC AUTO #ad - Keeping the coupler lock in your pocket or vehicle anywhere that is fine. How to operate our trailer tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock. Coupler locking hitch pin's Application: Tow Trailer Boat RV Truck Car.

If you have any question after receiving or using our trailer tongue lock, your problem will be solved within 24 HOURS. Small size for easy carrying. 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.

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. Czc auto - a reliable brand in hitch sercurity industry: we offer 30-day money-back guarantee for any reason, please contact us, 12-month warranty for quality-related issues.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number11410

6. CZC AUTO

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

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CZC AUTO #ad - Security of our coupler locking pin. Czc auto trailer hitch coupler locking pin's design. Please verify the size before purchasing our trailer hitch coupler pin lock 1/4 inch. Easy to operate coupler latch lock. Zinc alloy tubular lock core and more solid round key also help to improve security of the black coupler lock.

The watertight rubber cap keeps rain, snow, ice and dirt out. 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. Kinds of weather can be handled. 1/4 inch diameter black tongue lock pin with 2-1/2 inch effective length. 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.

Fits latch-type couplers for towing boat truck RV car. Czc auto - reliable brand in towing sercurity industry. Any issue in using our trailer hitch coupler lock, simply contact us, your problem will be solved within 24 HOURS. Application of the 1/4 trailer pin lock. 1/4 turn the key to open the coupler pin lock, the pin will pops-up automatically and comfortably. We offer 30-day money-back for any reason, 12-month warranty for quality-related issues.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number11406

7. Master Lock

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2-Piece Set, Master Lock 2848DAT Key Alike Set with Receiver and Coupler Latch Locks

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Master Lock #ad - Includes: one receiver lock, one stainless steel coupler latch lock, two keys; both keys open both locks. Ease of use: receiver lock features convenient Push to Lock locking mechanism: push lock body firmly onto the pin and remove key. Durable design: weather Tough seal and watertight cap provide protection from moisture and dirt. Receiver openings. Specifications: usable length of receiver pin is 2-3/4 in. Stainless steel lock fits 1/2 in. Lock application: Best used for vehicles, trailers, and RV hitch locks. And 5/8 in.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height1.41 Inches
Length8.56 Inches
Weight1.12 Pounds
Width4.88 Inches
Part Number57-7546
Model2848DAT
WarrantyLimited Manufacturer

8. CURT

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

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CURT #ad - 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.

For your convenience, two keys are included with this trailer tongue lock. Weather-resistant. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access. Two keys included. 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. 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. Dependable security. Versatile. To help protect your trailer from theft, this trailer lock is made from high-strength steel and has a padlock-style design.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.45 Pounds
Width2 Inches
Part Number23521
Model23521
WarrantyLimited Lifetime Warranty (One-Year Finish, One-Year Parts)

9. Master Lock

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Master Lock 2878DAT 0.875" Wide Trailer Coupler Latch Lock

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Master Lock #ad - Ergonomic handle for easy installation. Includes a removable python cylinder. 0875 inch shackle fits most popular trailer coupler latch widths. Features covered keyway that resists moisture, dirt and corrosion.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Weight0.4 Pounds
Part Number2878DAT
Model2878DAT
WarrantyLimited Warranty

10. Bulldog

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Bulldog 580410 Easy Access Adjustable Trailer Coupler Lock

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Bulldog #ad - Limited lifetime warranty included. Lock housing rotates 360 degrees. Includes 2 keys. Sliding dust cap. Easy access model with side key entry.
BrandBulldog #ad
ManufacturerBulldog #ad
Height7 Inches
Length2.88 Inches
Weight0.5 Pounds
Width1.75 Inches
Part Number580410
Model580410