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Heavy-duty trailer lock: it’s important to protect your belongings and your trailer or camper from being stolen. Proven industries: we are dedicated to providing our customers with the most-effective trailer locks on the market.
We carefully research and manufacture our locking systems from conception to fabrication in the USA. Our strong coupler lock fits select BullDog GBX gooseneck trailer couplers to keep your belongings safe and secure. It does not fit Ram gooseneck couplers.


Fit type: Universal Fit. For your convenience, two keys are included with this trailer tongue lock.
This trailer tongue lock is protected from the elements with its highly corrosion-resistant aluminum construction. Easy to operate. It also features a grey powder coat finish for maximum corrosion prevention. Dependable security.

It can also be used for a trailer jack wheel, pintle hook and more. The solid pin offers ample strength while the retainer clip ensures the pin will not vibrate or rattle free. Secure.
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. 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. Versatile.




1. Blaylock American Metal
#ad
Blaylock American Metal TL-55 Coupler Lock
#adBlaylock American Metal #ad - Fits all ram cast base gooseneck couplers 20, 000 lb. 000 lb. 000 lb. 25, 24, 30, 000 lb. Padlock not included. Features a 3/4" heavy-duty steel locking pin. Padlock not included. Precision made of aircraft aluminum.More information #ad
Brand | Blaylock American Metal #ad |
Manufacturer | Blaylock American Metal #ad |
Height | 4.7 inches |
Length | 14.3 inches |
Width | 10.5 inches |
Part Number | TL-55 |
Model | TL-55 |
More information #ad
2. Proven Industries
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Made in The USA, Fits Bulldog GBX Gooseneck Trailer Couplers, Proven Industries GBX Bulldog Gooseneck Coupler Lock, Blue
#adProven Industries #ad - Custom trailer-coupler lock: this custom-tailored lock will mount only on specific GBX BullDog gooseneck couplers with round or square coupler shapes. Our innovative key system also features an interior locking mechanism that deters would-be thieves from making a copy of your key.Heavy-duty trailer lock: it’s important to protect your belongings and your trailer or camper from being stolen. Proven industries: we are dedicated to providing our customers with the most-effective trailer locks on the market.
More information #ad
Unique key design: this trailer lock has a special key design that prevents lock picking. Tough lock: the locking parts on this device are constructed from hardened steel for increased security, and the exterior cover is tough enough to prevent burglars from using power tools, bolt cutters, hammers, and crowbars on your lock. We carefully research and manufacture our locking systems from conception to fabrication in the USA. Our strong coupler lock fits select BullDog GBX gooseneck trailer couplers to keep your belongings safe and secure. It does not fit Ram gooseneck couplers.
Brand | Proven Industries #ad |
Manufacturer | Proven Industries #ad |
Part Number | GBX |
Model | 58 |
More information #ad
3. VIRTIONZ
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Replacement for Round RAM Gooseneck Trailer Coupler Adjustable Height 25,000 lbs 2-5/16" Ball Replaces 028700300 1289020300 fits All PRP Series Model
#adVIRTIONZ #ad - 2-5/16" hitch ball round Adjustable Gooseneck Trailer Coupler. Replacement for round ram gooseneck trailer Coupler Adjustable Height 25, 000 lbs 2-5/16" Ball.More information #ad
Black powder coated to prevent rust. Includes 2" x 5/16" ball and 3/4" Pull Pin. Inner tube diameter: 4" od, outer Tube Diameter: 4-1/2" Od.Brand | VIRTIONZ #ad |
Manufacturer | VIRTIONZ #ad |
Part Number | 0287800300 |
Model | 0287800300 |
Warranty | 1 |
More information #ad
4. CURT
#ad
2-5/16-Inch Couplers, CURT 23081 Powder-Coated Aluminum Trailer Tongue Lock
#adCURT #ad - With a standardized channel, this trailer coupler lock fits most 2-5/16-inch and some 2-inch flat and rolled-lip trailer couplers check dimensions. To help protect your trailer from theft, this trailer lock fits over the trailer tongue and is designed to prevent a trailer ball from being inserted into the trailer coupler.Fit type: Universal Fit. For your convenience, two keys are included with this trailer tongue lock.
More information #ad
Weather-resistant. Two keys included. You can keep the spare key in a discrete location for emergencies or give it to a friend for helpful access. Versatile. This trailer tongue lock has a sleek, subtle look to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed. This trailer tongue lock is protected from the elements with its highly corrosion-resistant aluminum construction. Easy to operate. It also features a grey powder coat finish for maximum corrosion prevention. Dependable security.
Brand | CURT #ad |
Manufacturer | Curt Manufacturing #ad |
Height | 5.13 Inches |
Length | 5.75 Inches |
Weight | 1.4 Pounds |
Width | 3.25 Inches |
Part Number | 23081 |
Model | 23081 |
Warranty | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
More information #ad
5. CURT
#ad
Clear ZINC, 1/4-Inch Diameter x 2-3/4-Inch Long, CURT 25080 Trailer Coupler Pin
#adCURT #ad - 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. With the safety pin inserted in the coupler latch, the square retainer easily clips on to the end of the pin.It can also be used for a trailer jack wheel, pintle hook and more. The solid pin offers ample strength while the retainer clip ensures the pin will not vibrate or rattle free. Secure.
More information #ad
Corrosion-resistant. High-strength. Easy to use. This coupler safety pin provides a reliable solution for keeping your trailer coupler latch engaged with the trailer ball. The square retainer clip of this trailer coupler pin is made with spring steel, making the clip semi-flexible for easy operation. 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. 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. Versatile.
Brand | CURT #ad |
Manufacturer | Curt Manufacturing #ad |
Height | 1 inches |
Length | 4 inches |
Weight | 0.05 pounds |
Width | 4 inches |
Part Number | 25080 |
Model | 25080 |
Warranty | Limited Lifetime |
More information #ad
6. YEOPGYEON
#ad
YEOPGYEON Gooseneck Adjustable Trailer Coupler 2-5/16" Ball Size Capacity 12500lbs Black
#adYEOPGYEON #ad - Capacity 12500lbs. Powder coated Black Finish. Limited 1 Year Warranty. Fits 2-5/16" ball Size. To replacement coupler for boat and utility trailer.More information #ad
Brand | YEOPGYEON #ad |
Manufacturer | YEOPGYEON #ad |
Part Number | JY-TC-15B,16B |
More information #ad
7. VIRTIONZ
#ad
Round Gooseneck Trailer Coupler with 2-5/16" Ball 25,000 Lb Capacity Replaces 028700300
#adVIRTIONZ #ad - Inner tube diameter: 4" od, outer Tube Diameter: 4-1/2" Od. Black powder coated to prevent rust. Includes 2" x 5/16" ball and 3/4" Pull Pin.More information #ad
2-5/16" hitch ball round Adjustable Gooseneck Trailer Coupler. Replacement for round ram gooseneck trailer Coupler Adjustable Height 25, 000 lbs 2-5/16" Ball.Brand | VIRTIONZ #ad |
Manufacturer | VIRTIONZ #ad |
Part Number | round coupler |
Model | round coupler |
More information #ad
8. CURT
#ad
CURT 52020 Replacement Trailer Breakaway Switch Lanyard
#adCURT #ad - Actives trailer brakes when cable is released during a disconnect. Trailer breakaway battery and system sold separately. 48-inch long cable. Connects tow vehicle to trailer breakaway switch. High-temp nylon pull.More information #ad
Brand | CURT #ad |
Manufacturer | Curt Manufacturing #ad |
Height | 1 inches |
Length | 4 inches |
Weight | 0.05 pounds |
Width | 2 inches |
Part Number | 52020 |
Model | 52020 |
Warranty | One-Year Limited Warranty |
More information #ad
9. Bulldog Cases
#ad
Round, 2-5/16 in. Diameter, Bulldog 0289340317 Gooseneck Coupler, 25,000 lbs. Capacity
#adBulldog Cases #ad - Self-centering locking plate lets you miss the ball by more than an inch. Heavy-duty construction provides unmatched strength. Easy-grip locking handle is accessible from any position, even with a glove on. Tight ball fit reduces jarring when changing speeds or on rough roads.More information #ad
Brand | Bulldog Cases #ad |
Manufacturer | BULLDOG #ad |
Height | 8 inches |
Length | 28.5 Inches |
Weight | 46.7 pounds |
Width | 9 Inches |
Part Number | 0289340317 |
Model | 0289340317 |
Warranty | 1 Year |
More information #ad
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