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Bulldog
Always the correct part
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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.
Strong, durable, and sturdy, the BULLDOG 12,000 lbs. support capacity square jack is the BIG reason why BULLDOG has carried the load in agricultural, construction, heavy-duty utility, and horse/livestock trailer industries since 1923. All BULLDOG 4" square jacks are rated for 12,000 lbs. support capacity and 10,000 lbs. lift capacity. The strength of the product, plus the wide variety of styles, makes this jack the best choice in its product class.
| BRAND: | BULLDOG |
| PART NUMBER: | 182411 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 62.2 LBS |
| CAPACITY: | 12,000 LBS. |
| TRAVEL: | 12.5 IN. |
| RETRACTED: | 27.4 IN. |
| EXTENDED: | 53.5 IN. |
| MODEL NUMBER: | SWQ 180 DL-B |
| HANDLE STYLE: | SIDEWIND |
| ATTACHED WHEELS: | NO |
| MATERIAL: | STEEL |
| SPEEDY LIFT: | NO |
| COLOR: | GRAY |
Keywords: BD182411-20PK bundle kit, complete kit, professional components, industrial kit, BD182411, 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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The jack has a rated capacity of 12,000 lb. However, the actual capacity is limited to the lesser of the jack, footplate, or caster wheel capacity. Always refer to the stamped markings or decals on the product to confirm the rated capacity. If uncertain, contact Cequent Performance Products at 1-800-521-0510 or www.cequentgroup.com.
The jack has a 2-speed shift pattern where the handle moves 5/8″–3/4″ while shifting. High gear is engaged when the shaft is pushed in. Low gear is engaged when the shaft is pulled out. This clearance must be accounted for during installation to ensure the handle does not interfere with the tow vehicle, tongue, or other accessories.
No. These jacks are designed for mounting to flat surfaces only. Before mounting, confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in all positions including handle swing (in both gears, if applicable) and swivel positions if applicable. Check for interference again after installation is complete.
These jacks are designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided.
Before mounting the jack, confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in all positions including handle swing (in both gears, if applicable) and swivel positions if applicable. You must also check for interference again after installation is complete.
All welding must be performed by an AWS certified welder. This is a mandatory requirement for both direct-mount and pivot tube mounting installations.
1) All welding must be performed by an AWS certified welder. 2) Place the jack at the desired location. 3) Three 2″ long 1/4″ fillet welds must be placed on both sides of the jack along the contacting surface. The welds should be as far apart as possible to maximize strength under load. 4) If mounting in a tandem application, align the jacks carefully so they raise and lower together and share the load equally.
1) All welding must be performed by an AWS certified welder. 2) The non-beveled side of the pivot tube is welded to the tongue. 3) Place the weld-on pivot tube against the tongue and weld all around with a 1/4″ fillet weld. Align one set of pivot mount holes vertically. 4) Mate the jack to the pivot tube and secure with the supplied pin.
Make certain the pivot pin is fully inserted through both sides on the pivot tube and the pivot mount before using the jack.
Make certain the drop leg pin is fully inserted before using the jack. Never attempt to adjust the drop leg when the jack is under load. Keep clear of the pinch point at the drop leg pin, as the drop leg will naturally drop or retract very quickly depending on the model. Keep clear of holes in the drop leg.
Never position any part of your body under any portion of the jack or the load being supported. Do not allow children to play on or around the product or the load being supported. Secure the load, vehicle, and trailer from rolling by blocking wheels when operating the jack or coupling the trailer. Never exceed the maximum rated capacity. Fully retract and/or rotate the jack before towing.
1) Verify that the jack is not supporting any load. 2) If extended, place your foot on the foot plate to control the return of the drop leg. 3) Disengage the drop leg pin by rotating it to the disengaged position. 4) Carefully move the drop leg to the desired position using your foot. 5) Engage the drop leg pin by rotating it to the engaged position and into the desired adjustment hole. 6) Verify that the drop leg pin is fully inserted into the jack by checking for no clearance between the drop leg pin and housing. If you see clearance, you must adjust the drop leg to fully seat the pin into the hole location. Do not use the jack if you are unable to fully seat the pin.
1) Verify that the jack is not supporting any load. 2) If retracted, grasp the handle of the foot plate to control the fall of the drop leg. 3) Disengage the drop leg pin by rotating it to the disengaged position. 4) Carefully move the drop leg to the desired position. 5) Engage the drop leg pin by rotating it to the engaged position and into the desired adjustment hole. 6) Verify that the drop leg pin is fully inserted into the jack by checking for no clearance between the drop leg pin and housing. If you see clearance, you must adjust the drop leg to fully seat the pin into the hole location. Do not use the jack if you are unable to fully seat the pin.
Maintenance procedures should be performed at least annually. The gears, bushings, and screw of the jack must be kept lubricated. For side-wind models, apply a small amount of automotive grease with a grease gun at the lubrication points found on the side of the jack near the input shaft, then rotate the jack handle to distribute the grease evenly. A lightweight oil must be applied to the input shaft bushings at both sides of the jack or gearbox. For top-wind models, the screw-stem should be lubricated with a lightweight oil. If equipped, the drop leg pin and spring must be kept clean and lubricated with a lightweight oil.
For side-wind models, use automotive grease at the lubrication points near the input shaft. A lightweight oil must be applied to the input shaft bushings at both sides of the jack or gearbox. For top-wind models, use lightweight oil on the screw-stem. If equipped, use lightweight oil on the drop leg pin and spring. Always use Cequent Performance Products parts or parts of equal quality for repair and maintenance.
Fully retract and/or rotate the jack before towing.
No. The purchaser/owner must not alter or modify the product. Installation of the product must conform to the mounting instructions only.
Cequent Performance Products warrants to the original consumer purchaser that the product will be free from material defects in both material and workmanship for a period of five years, ordinary wear and tear excepted, provided that installation and use of the product is in accordance with product instructions. The warranty does not cover normal wear and tear, damage through abuse, neglect, misuse, accident, misapplication, overloading, improper installation (including welds), improper maintenance and repair, or product alteration by anyone other than the manufacturer. To make a warranty claim, contact Cequent Performance Products at 1-800-521-0510 or 47774 Anchor Ct. W., Plymouth, MI 48170, identify the product by model number, and provide the product and purchase receipt.
The jack is designed for mounting to flat surfaces only. Before installation, you must confirm there will be no interference from the tow vehicle, tongue, ground, and other accessories in all positions, including handle swing and swivel positions. Contact Cequent Performance Products at 1-800-521-0510 if you need fitment assistance.
Yes. All welding must be performed by an AWS certified welder. For direct mounting, three 2″ long 1/4″ fillet welds are required on both sides of the jack. For pivot tube mounting, a 1/4″ fillet weld is required all around the pivot tube.
Make certain the drop leg pin is fully inserted before using the jack. Verify that the drop leg pin is fully inserted by checking for no clearance between the drop leg pin and housing. Do not use the jack if you are unable to fully seat the pin.
Fully retract and/or rotate the jack before towing.
Maintenance procedures should be performed at least annually. For side-wind models, apply automotive grease at lubrication points near the input shaft and apply lightweight oil to the input shaft bushings. For top-wind models, lubricate the screw-stem with lightweight oil. If equipped, lubricate the drop leg pin and spring with lightweight oil.
First, verify that the jack is not supporting any load. You may need to lubricate the drop leg pin assembly with lightweight oil as described in the maintenance section. Rotate the jack handle to distribute the lubricant. If you are still unable to fully seat the pin after lubrication, do not use the jack. Contact Cequent Performance Products at 1-800-521-0510 for assistance.
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