Top 10 Trailer Coupler Lock Pin – Towing Hitch Locks

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1. Master Lock

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

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

2. CURT

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1/4-Inch Diameter x 2-3/4-Inch Long, CURT 25080 Trailer Coupler Pin

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CURT #ad - Corrosion-resistant. The 1/4-inch diameter and 2-3/4-inch length of this coupler safety pin make it highly versatile to fit a wide variety of trailer couplers. Easy to use. It can also be used for a trailer jack wheel, pintle hook and more.

High-strength. The 1/4-inch trailer coupler pin is made out of solid steel for reliable strength, safety on the road and confidence with every mile of your adventure. Protected by a durable zinc-plated finish, this coupler safety pin maintains excellent resistance to rust and corrosion for longevity and hassle-free use every time. Versatile. This coupler safety pin provides a reliable solution for keeping your trailer coupler latch engaged with the trailer ball.

The solid pin offers ample strength while the retainer clip ensures the pin will not vibrate or rattle free. With the safety pin inserted in the coupler latch, the square retainer easily clips on to the end of the pin. The square retainer clip of this trailer coupler pin is made with spring steel, making the clip semi-flexible for easy operation. Secure.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height1 Inches
Length4 Inches
Weight0.05 Pounds
Width4 Inches
Part Number25080
Model25080
WarrantyLimited Lifetime

3. Master Lock

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Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle x 9/32" Diameter Pin

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Master Lock #ad - Weather tough seal and water tight cap protects the lock from the elements. K1 key blank. Fits ufp and surge brake couplers. The lock works when the trailer is either connected to the tow vehicle or when the trailer is unattached.

Chrome plated for improved wear and corrosion resistance. It has a precision 4 pin tumbler mechanism that resists picking. 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. 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. This master lock protects and guards against tow-away theft.
BrandMaster Lock #ad
ManufacturerMaster Lock #ad
Height2 Inches
Length9.1 Inches
Weight0.75 Pounds
Width5 Inches
Part Number1471DAT
Model1471DAT
Warranty2 year manufacturer

4. CURT

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

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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. 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.

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. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access. Two keys included. Weather-resistant. For your convenience, two keys are included with this trailer tongue lock. Versatile. Dependable security. 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
Model23521
WarrantyLimited Lifetime Warranty (One-Year Finish, One-Year Parts)

5. Reese

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Reese Towpower 7042100 Adjustable Coupler Latch Lock

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

6. METOWARE

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METOWARE Trailer Tongue Coupler Lock 1/4" Dia, Trailer Hitch Lock for Latch-Type Coupler, Black Trailer Pin Lock for Towing Trailer RV Car Boat Truck 1 Pack, 3-1/2" Span

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METOWARE #ad - Money back guarantee your satisfaction is what we strive for. 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.

Push-to-lock design our trailer coupler lock is designed for easy operation. 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 heavy-duty steel, our trailer hitch is durably and strong. 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. Its reinforced zinc alloy tubular lock core and stronger tubular keys improve the security. If something goes wrong with your purchase, we will offer you a free replacement or a full refund. Package include one lock pin 1/4" diameter&3-1/2 span + one lock head 361°rotating design& water proof rubber cap + two tubular keys one for standby.
BrandMETOWARE #ad
ManufacturerMETOWARE #ad
Part Number40891
Model40891

7. CURT

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1/4-Inch Pin Diameter, Up to 3-Inch Span, CURT 23503 Right-Angle Trailer Coupler Lock

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CURT #ad - Ergonomic operation. This right-angle trailer lock has a built-in swivel feature and simple 1/4-turn lock activation to allow the head to twist toward you for easy, ergonomic access when locking or unlocking your trailer.

You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access. For your convenience, two keys are included with this trailer tongue lock. The internal components of this trailer pin lock can easily be protected from the elements with the included watertight dust cap, while the coupler lock head is shielded against corrosion with a durable anodized aluminum finish.

To help protect your trailer from theft, this trailer tongue lock is made with high-strength steel construction. Watertight. Versatile. Two keys included. With a 1/4-inch diameter, segmented pin, this trailer coupler lock fits latch-type couplers spanning from 1 inch up to 3 inches. Dependable security.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight0.5 Pounds
Width2 Inches
Part Number23503
Model23503
WarrantyLimited Lifetime Warranty (One-Year Finish, One-Year Parts)

8. CZC AUTO

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

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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. 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. How to operate our trailer tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock. The hitch lock is coated with black electrophoretic paint to prevent corrosion. Coupler locking hitch pin's Application: Tow Trailer Boat RV Truck Car.

Keeping the coupler lock in your pocket or vehicle anywhere that is fine. Security of our coupler locking pin: this trailer lock is made of high-strength steel to deter theft. 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

9. Trimax

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Trimax SXTC3 Premium Stainless Steel Coupler Lock 3.5" Span

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Trimax #ad - Package weight: 0408 pounds. Stainless Steel. Trimax corporation is the world’s leading lock manufacturer providing customers’ high quality products through innovative design. Trimax offers more products keyed alike and cross-keyable products than any other competitor at no charge.
BrandTrimax #ad
ManufacturerTrimax Locks - Wyers Products #ad
Height13 Inches
Length17 Inches
Weight0.71 Pounds
Width13 Inches
Part NumberSXTC3
ModelSXTC3
WarrantyLifetime Warranty

10. CZC AUTO

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

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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. 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.

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. The watertight rubber cap keeps rain, snow, ice and dirt out. Kinds of weather can be handled. Czc auto trailer hitch coupler locking pin's design. Any issue in using our trailer hitch coupler lock, your problem will be solved within 24 HOURS. Czc auto - reliable brand in towing sercurity industry.

Easy to operate coupler latch lock. Security of our coupler locking pin. We offer 30-day money-back for any reason, simply contact us, 12-month warranty for quality-related issues. Zinc alloy tubular lock core and more solid round key also help to improve security of the black coupler lock. Fits latch-type couplers for towing boat truck RV car. Please verify the size before purchasing our trailer hitch coupler pin lock 1/4 inch.
BrandCZC AUTO #ad
ManufacturerCZC AUTO #ad
Part Number11406