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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.
Tough & Trusted BULLDOG presents a Powered Jack with all the capacity and features you want.
| BRAND: | BULLDOG |
| PART NUMBER: | 500187 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 22.2 LBS |
| CAPACITY: | 3,500 LBS. |
| TRAVEL: | 22 IN. |
| HARDWARE INCLUDED: | NO |
| RETRACTED: | 9.75 IN. |
| SPEEDY LIFT: | NO |
| EXTENDED: | 31.5 IN. |
| COLOR: | BLACK |
| CLEARANCE: | 20.5 IN. |
| ATTACHED WHEELS: | NO |
| MATERIAL: | STEEL |
| FOOT WIDTH: | 5.278 IN. ROUND |
| FOOT LENGTH: | 5.278 IN. ROUND |
| CYLINDER DIAMETER: | 2.25 IN. |
Keywords: BD500187-20PK bundle kit, complete kit, professional components, industrial kit, BD500187, 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 Powered A-Frame Jack is an electric jack designed to attach to the top surface of a trailer A-frame coupler. It extends to raise the trailer off the tow vehicle's ball and retracts to lower it back down. It includes a built-in circuit breaker, LED light, manual override crank for power loss, and optional bubble level for leveling the trailer.
No. The battery and charger are not included with the jack. You must supply your own trailer battery and charger. It is important to ensure the battery is fully charged before using the jack.
The Powered A-Frame Jack is designed to attach to the top surface of an A-frame coupler. The dual mounting pattern allows positioning of the jack either facing the tow vehicle or for side operation.
Yes. The dual mounting pattern allows positioning of the jack either facing the tow vehicle or for side operation, depending on your trailer configuration and operational preference.
The manual instructs you to check for interference if your trailer has a weight distribution kit attached. You must verify that the jack does not interfere with the kit during operation to avoid damage. This check should be performed during the plunger pin kit installation if applicable.
The jack includes three 3/8" diameter, 1" long grade 5 bolts and nuts, lock washers, and star washers for mounting. A plunger pin kit assembly may be included depending on the model. Cable ties are recommended for routing the wire lead but are not specified as included.
The plunger pin kit may be included with the jack depending on the model. If it is included, the manual provides separate installation instructions. If you are unsure whether your jack includes this kit, contact Cequent Performance Products Customer Service at 1-800-604-9466.
Yes. You must disconnect the trailer battery ground cable before installation to avoid accidental shock and/or damage to the electrical system. Reconnect the battery ground cable after the wiring is complete and tested.
Use the tow vehicle's parking brake and chock the wheels of the trailer to prevent it from rolling. This must be done before beginning installation.
1. Attach trailer to tow vehicle and secure with parking brake and wheel chocks. 2. Disconnect trailer battery ground cable. 3. Detach the drop leg by removing the lynch pin. 4. Position the drop leg beneath the coupler mounting hole with the foot on the ground. 5. Place the jack outer tube through the A-frame coupler hole and over the drop leg. 6. If a plunger pin kit is included, install it per separate instructions. 7. Attach the jack using three 3/8" bolts and nuts with lock washers and star washers, torqued to 15–20 ft-lbs. 8. Route the black wire lead along the trailer to the battery using cable ties. 9. Connect the wire lead to the positive (+) terminal of the battery. 10. Reconnect the battery ground cable. 11. Test the EXT and RET switches and LED light. 12. Reattach the drop leg using the lynch pin or plunger pin assembly. 13. Retract the jack completely.
Position the drop leg beneath the coupler mounting hole with the foot of the drop leg on the ground. The drop leg supports the jack outer tube as it is placed through the A-frame coupler hole.
Route the black wire lead from the plastic cover along the trailer to the battery. Attach the wire lead to the trailer using cable ties or equivalent to secure it in place. Then connect the wire lead directly to the positive (+) terminal of the battery.
Connect the black wire lead directly to the positive (+) terminal of the trailer battery. The jack has a built-in circuit breaker that automatically trips and resets. Reconnect the battery ground cable after wiring is complete.
Press the motor switch marked 'EXT' to extend the jack and 'RET' to retract it. Also check that the light switch turns on the LED light located under the top cover of the jack. If both functions work, the installation is correct.
After checking for proper operation of the motor and LED light, reattach the drop leg to the inner tube of the jack using the lynch pin or plunger pin assembly. Then retract the jack completely.
Torque the three 3/8" diameter, 1" long grade 5 bolts to 15–20 ft-lbs. Lock washers must be placed between the bolt head and the top of the jack mounting bracket, and star washers must be used to ensure metal-to-metal contact between the jack and coupler for proper grounding.
Three 3/8" diameter, 1" long grade 5 bolts and nuts are provided. Torque them to 15–20 ft-lbs with lock washers and star washers as specified.
Star washers are used to ensure metal-to-metal contact between the jack and coupler for proper grounding. They must be placed between the bolt head and the top of the jack mounting bracket.
The wire lead is black. It runs from the plastic cover of the jack along the trailer to the battery.
Yes. The jack has a built-in circuit breaker which automatically trips and resets. This protects the electrical system from overload.
No. The wire lead must be connected directly to the positive (+) terminal of the battery only. The negative connection is made through the battery ground cable, which must be reconnected after the positive wire is attached.
The maximum rated capacity is stamped on markings or decals on the product. The manual does not provide a specific capacity value in the text. If you are uncertain about the capacity, contact Cequent Performance Products at 800-604-9466 or www.cequentperformanceproducts.com.
No. Never attempt to adjust the drop foot or drop leg when there is any load on the jack. Always ensure the load is fully supported by other means before adjusting the drop leg.
The jack is designed for vertical loading only. Excessive side forces may cause jack failure and must be avoided. Never apply lateral or horizontal forces to the jack.
Yes. When using the drop foot or drop leg, make certain the supplied pin (lynch pin or plunger pin) is fully inserted through both sides of the inner tube and the drop tube before using the jack. This ensures safe operation.
Never position any part of your body under or on the path of the product or the load being supported or moved. Do not allow children to play on or around the product or load. Secure the load, vehicle and trailer from rolling by blocking the wheels when operating the jack or coupling the trailer. Never exceed the maximum rated capacity.
No. Do not direct a high-pressure spray at the Powered A-Frame Jack. Use mild soap and water and rinse thoroughly if cleaning is necessary.
Press the 'EXT' switch to extend the jack and 'RET' to retract it. Verify the LED light turns on using the light switch. Ensure the drop leg is reattached with the lynch pin or plunger pin fully inserted through both sides of the jack tube. Finally, retract the jack completely.
The motor is sealed and maintenance-free. However, you must maintain the electrical system, including the battery and charger (not included). Ensure all connections are tight and free of corrosion, and that the jack is properly grounded with the coupler (metal-to-metal contact). Periodically oil the pins of the plunger pin assembly.
Periodically check the mounting hardware for proper torque and tighten if necessary. The manual does not specify an exact interval, but regular inspection is required to ensure safe operation.
Always ensure the battery is fully charged prior to use. If the battery is not fully charged, the jack may not extend or retract properly. Charge the battery completely before operating the jack.
Yes. Periodically oil the pins of the plunger pin assembly to maintain smooth operation.
Always replace bent, broken, or worn parts before using the product. Use only Cequent Trailer Products' parts or parts of equal quality for repair. Replacement parts are available through Cequent Performance Products Customer Service at 1-715-693-1700 or 1-800-604-9466. Please specify the product model number.
If electric power is lost, remove the cap on top of the plastic cover. Insert the manual override crank to raise or lower the jack manually. This allows you to operate the jack without electrical power.
1. Ensure the battery is fully charged. 2. Chock the wheels of the trailer. 3. Open the coupler and push the 'EXT' switch to extend the jack. Alternatively, you can use the drop leg to quickly extend the jack. 4. After adjusting the drop leg to the desired level, reattach the lynch pin or plunger pin assembly through both sides of the jack tube.
1. Push the 'RET' switch to retract the jack. 2. After the coupler has fully engaged the ball, continue retracting the jack fully. 3. Be sure to close the coupler. 4. After full retract, you may need to raise the drop leg. 5. Reattach the lynch pin or plunger pin assembly through both sides of the jack tube after adjusting the drop leg to the desired level.
Use the light switch labeled 'ON' and 'OFF' to control the LED light located under the top cover of the jack.
The bubble level only needs to be adjusted during initial setup. 1. Chock the wheels of the trailer. 2. Remove the three bubble level retaining ring screws. 3. Place the bubble level on a known flat surface. 4. Lower the trailer's leveling jacks (if equipped) and the Powered A-Frame jack to properly support and level the trailer using the bubble level as a guide. 5. Once level, return the bubble level to the jack and adjust the three retaining screws so that the bubble is centered. After this initial setup, you can level your trailer in minutes by watching the bubble on the jack.
No. The bubble level only needs to be adjusted during the initial setup. After the initial calibration, you can level your trailer in minutes by watching the bubble mounted on the jack. No further adjustments are necessary.
The warranty period depends on the product line. Bulldog® and Reese Professional® products are covered for five years. Pro-Series® products are covered for one year. The warranty covers material defects and workmanship, excluding ordinary wear and tear, provided installation and use are in accordance with product instructions. This warranty is for the original consumer purchaser only and is not transferable.
The warranty covers material defects in both material and workmanship, provided installation and use are in accordance with product instructions. The warranty does not cover normal wear and tear, damage from abuse, neglect, misuse, accidents, misapplication, overloading, improper installation, improper maintenance and repair, or product alterations made by anyone other than the manufacturer.
Contact Cequent Performance Products at 47912 Halyard Dr. Suite 100, Plymouth, MI 48170, 1-800-632-3290. Identify the product by model number and follow the claim instructions provided. You must provide the product and your purchase receipt to process the claim. You will be responsible for return shipping costs. Retain your purchase receipt to verify the date of purchase and confirm you are the original consumer purchaser.
No. The product must be installed and used in strict accordance with the instructions. The purchaser/owner must not alter or modify the product. Any modifications not made pursuant to product instructions and in a workmanlike manner will void the warranty.
Replacement parts are available through Cequent Performance Products Customer Service Department at 1-715-693-1700 or 1-800-604-9466. You can also visit www.cequentperformanceproducts.com for additional details. Please specify the product model number when ordering.
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