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Bulldog
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Always the correct part
We know our products
Quality Products
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Complete kit bundle containing all necessary components for your project. Professional-grade components designed for reliable performance and long-lasting durability.
BULLDOG gooseneck couplers are quick and easy to engage and strong and secure on the road. Our unique, patented, extruded locking plate design and high-strength steel components make BULLDOG gooseneck couplers 65% stronger than similar products.
| BRAND: | BULLDOG |
| PART NUMBER: | 0233120300 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 20.6 LBS |
| MATERIAL: | STEEL |
| SAFETY CHAINS INCLUDED: | NO |
Keywords: BD0233120300-30PK bundle kit, complete kit, professional components, industrial kit, BD0233120300, BULLDOG
Founded in 1920, Bulldog has become the standard for heavy-duty trailer connection hardware in agricultural, military and utility service. The line covers gooseneck hitches and couplers, A-frame and channel-mount trailer couplers with the Wedge-Latch mechanism, and heavy-duty jacks, built for unmatched strength, reliability and safety under demanding loads.
Bulldog was founded in 1920 and has spent more than a century supplying the connection hardware that heavy trailers depend on. Its market has always been the demanding end: agricultural, military and utility applications where a coupler failure is not an inconvenience but a serious incident. The brand summarises its position as Tough and Tested, and it sits within the Horizon Global towing group alongside Reese, Draw-Tite, Fulton, Tekonsha, Bargman and Wesbar.
Gooseneck equipment is the brand's signature. Gooseneck hitches mount in the truck bed over the rear axle, which places the load where the chassis can carry it properly and allows far tighter turning than a receiver hitch permits. Matching gooseneck couplers attach at the trailer end, in round tube and square configurations across the capacity range used by livestock, equipment and flatbed trailers.
The conventional trailer coupler range is built around the Wedge-Latch mechanism, which uses a wedge to take up wear between coupler and ball rather than relying on a fixed clamp that loosens over time. That matters on a trailer accumulating hard miles, where slack in the coupling shows up as noise and shock loading. Couplers are offered in A-frame form for standard tongues and in channel-mount form for straight tongue and fabricated frames, with adjustable channel versions that let a coupler be positioned to suit the tongue height.
Heavy-duty jacks complete the line, sized for the tongue weights that gooseneck and equipment trailers generate. Across the range the emphasis is consistent: forged and heavy-section components, load ratings backed by testing, and hardware specified for agricultural, military and heavy-duty commercial use rather than occasional recreational towing.
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Use only a 2 5/16" ball rated equal to or greater than the capacity of the coupler. If uncertain about the correct rating, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com.
The manual shows four configurations: 20K Round, 25K Round, 25K Square, and 30K Round. Do not exceed the lesser of the coupler, hitch, vehicle, ball, or trailer weight ratings (including load). Refer to the capacity label on your specific coupler for its exact rating.
No. Before mounting, confirm there will be no interference from the tow vehicle, tongue, ground, or any other mounted accessories while stationary or in motion. Check for interference in both extended and retracted positions before installation and again after installation is complete. The coupler must reach the towing vehicle to couple with the hitch ball while the load bearing pin is installed properly, or within the extension range if it is a square adjustable gooseneck.
Yes. All welding must be performed by an AWS certified welder. This is a requirement stated in both the warnings and installation instructions. Avoid heat damage to the coupler during welding, and do not weld over or near any holes or hardware on the coupler.
The outer tube must be supported completely by attaching gussets as low as possible to the outer tube. For adjustable couplers, reinforcements must extend down the outer tube to within 3" above the bottom of the outer tube. For non-adjustable couplers, reinforcement must be within 20 inches above the locking plates. For high load, high mileage, or rough service applications, gussets and banding that tie trailer framing to the coupler are required. These modifications are the responsibility of the trailer manufacturer.
All hardware must be torqued to 125 ft. lbs. minimum. This includes set bolts and nuts. Periodically check for proper torque and tighten if necessary. Check for wear on the inner tube if retightening is needed.
Do not exceed 8" maximum extension. Measure the coupler extension as the difference between the fully retracted and fully extended positions. Couplers with properly installed load bearing pins and square adjustable gooseneck couplers only extend within this 8" range.
1) Block trailer wheels. 2) Align hitch ball beneath coupler. 3) Set the locking pin in the open position. 4) Slide the locking plate into the open position and lower the trailer onto the hitch ball. 5) Visually check that the hitch ball is fully seated in the coupler. 6) Slide the locking plate into the closed position. 7) Set the locking pin in the closed position to close the coupler.
1) Block trailer wheels. 2) Set the locking pin in the open position. 3) Slide the locking plate into the open position and raise the trailer from the hitch ball.
Before towing, perform these checks: 1) Check vehicle, hitch ball, and coupler for signs of wear or damage. 2) Ensure the coupler opens, closes, and the handle springs closed when released. 3) Replace bent, broken, or worn parts before using. 4) Ensure the hitch ball is fully seated in the coupler ball pocket and the latch is closed. 5) Verify trailer safety chains are properly connected to the towing vehicle and trailer. 6) Verify all trailer lighting is hooked up and working properly.
The load bearing pin is a component that must be fully inserted through both the inner and outer tubes in order for the coupler to support its rated load. Do not tow unless the load bearing pin is fully inserted and the retaining pin is installed. If equipped with a load bearing pin, it must be fully inserted through both tubes for the coupler to support its rated load according to SAE J2638.
The following procedures should be performed at least annually: 1) Check hardware torque (maintain 125 ft. lbs. minimum). 2) Grease ball pocket. 3) Oil pivot points with SAE 30 wt. motor oil. 4) Inspect retaining pin and replace if necessary. Keep the ball pocket, latch, and handle clean.
No. The purchaser/owner must not alter or modify the product. The coupler must be installed according to the instructions and must remain vertical after installation to ensure proper operation. Do not use the coupler if its operation has been impaired in any way.
Never position any body part under any portion of the coupler or the load being supported. Do not allow children to play on or around the coupler or the load being supported. Always secure the load, vehicle, and trailer (by blocking wheels) before latching or unlatching the coupler. Weigh your trailer plus added load and do not exceed the lesser of coupler, hitch, vehicle, ball, or trailer weight ratings (including load).
After installation is complete, check for interference again in both extended and retracted positions. Verify that the coupler operation has not been impaired in any way. The coupler must remain vertical after installation to ensure proper operation. Do not use the coupler if its operation has been impaired. After assembly and painting, but prior to being used, any enclosed labels must be affixed to the coupler and premask removed.
The set bolts must be facing the towing vehicle. This orientation is required before installation begins.
Use only Cequent Performance Products' parts. Replacement parts are available through Cequent Performance Products' Customer Service Department at 1-800-632-3290. Please specify the product model number. You can also visit www.cequentgroup.com for additional information.
Cequent Performance Products warrants to the original consumer purchaser that the product will be free from defects in material and workmanship for a period of three years under normal use and service, ordinary wear and tear excepted. If the product does not comply with this warranty, Cequent will replace the product without charge within a reasonable time or, at Cequent's option, refund the purchase price. This warranty is not transferable. The warranty does not cover normal wear and tear, damage from abuse, neglect, misuse, accidents, misapplication, overloading, improper installation, improper maintenance, or products altered by anyone other than Cequent.
This product is rated according to SAE J2638.
All hardware must be torqued to 125 ft. lbs. minimum. Periodically check for proper torque and tighten if necessary.
Yes. Block trailer wheels before latching or unlatching the coupler. This is required for both coupling and uncoupling procedures.
Yes. All welding must be performed by an AWS certified welder. Do not weld over or near any holes or hardware on the coupler, and avoid heat damage to the coupler during welding.
Maintenance procedures should be performed at least annually: check hardware torque, grease ball pocket, oil pivot points with SAE 30 wt. motor oil, and inspect and replace the retaining pin if necessary.
Do not tow unless the load bearing pin is fully inserted through both the inner and outer tubes and the retaining pin is installed. If the load bearing pin is not fully inserted, the coupler cannot support its rated load.
This indicates a problem with the coupler. Before towing, ensure that the coupler opens, closes, and the handle springs closed when released. Replace bent, broken, or worn parts before using the product. Do not use the coupler if its operation has been impaired.
Visually check that the hitch ball is fully seated in the coupler ball pocket. If it is not fully seated, do not proceed with coupling. Ensure the hitch ball is fully seated in the coupler ball pocket and the latch is closed before towing. If the ball does not seat properly, check for damage to the coupler or ball and replace worn or damaged parts.
Do not use the coupler if its operation has been impaired in any way. After installation, check to make sure that coupler operation has not been impaired. If operation is impaired, do not tow and contact Cequent Performance Products at 1-800-632-3290 for assistance.
Excessive vibration indicates loose hardware. Tighten the set bolts and nuts to minimize vibrations in the coupler during towing. All hardware must be torqued to 125 ft. lbs. minimum. Check for proper torque and retighten if necessary. If vibration persists after retightening, check for wear on the inner tube.
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