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Fulton


Always the correct part
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Always the correct part
We know our products
Quality Products
Free Shipping!
Keep your trailer jack in the best operating condition possible with the genuine Fulton jack accessories & replacement parts
| BRAND: | FULTON |
| PART NUMBER: | 500320 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 4.55 LBS |
| CHAIN INCLUDED: | NO |
| COLOR: | SILVER |
| MATERIAL: | STEEL |
| FINISH: | ZINC |
| HARDWARE INCLUDED: | YES |
| GEARS INCLUDED: | NO |
| HANDLE BUSHING INCLUDED: | NO |
| ROLL PINS INCLUDED: | NO |
| WASHERS INCLUDED: | YES |

Fulton has produced marine and utility trailer hardware for more than a century, and its jacks, winches and couplers are a standard for light and medium-duty trailering. The XLT and F2 series cover swivel and fixed jacks, hand and powered winches from 1,500 to 3,200 pounds, and couplers built to keep working in wet, salty conditions.
With more than a hundred years of production behind it, Fulton has become the reference point for light and medium-duty trailer hardware, particularly on the marine side. That environment is the toughest test a trailer component faces. A boat trailer is reversed into fresh or salt water on every launch and left to sit wet, which finds every weakness in plating, sealing and material choice. Fulton's stated position is that the brand performs best when the weather is at its worst, and its product engineering reflects that. It sits within the Horizon Global towing group alongside Reese, Draw-Tite, Bulldog, Tekonsha and Wesbar.
Marine and utility jacks anchor the line. The XLT Series marine jack uses a bolt-through swivel mount built from three-dimensionally formed heavy-gauge steel stampings with a proprietary bushing material, a combination chosen to minimise deflection under tongue load while keeping the swivel action working after years of exposure. The F2 Series takes corrosion resistance further as the industry's only extruded aluminium marine jack with an anodised finish, which removes the rust problem at its source rather than coating over it. The wider trailer jack range covers topwind, sidewind and drop-leg configurations.
Trailer winches pull boats onto bunks and rollers. XLT Series winches use efficient gear ratios, full-length drum bearings, oil-impregnated shaft bushings and a Comfort Grip handle that makes the last few turns under load bearable, in 1,500 and 1,800 pound capacities. F2 Series winches use an enclosed frame for a cleaner look and added protection, in 1,600, 2,000 and 3,200 pound models, including two-speed options that trade line speed for cranking effort.
Couplers complete the range, including A-frame couplers matched to common tongue sizes and load ratings, serving boat owners, utility trailer users and trailer manufacturers.
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The Jack Adapter Plate F3811 is a mounting adapter that allows you to replace an XP jack swivel assembly with an F2 jack on a trailer tongue. It serves as the interface between the F2 jack and the existing jack mount on your trailer, enabling you to upgrade or replace your jack system.
The F3811 adapter plate is specifically designed to work with the F2 jack. The installation instructions show the adapter plate being attached to the F2 jack using 3/8" cap screws and lock washers. You must have an F2 jack available to use this adapter plate.
The F3811 adapter plate replaces the XP jack swivel assembly. During installation, you remove and discard the locknut and bushing from the XP jack swivel assembly, then install the adapter plate in its place using a new locknut supplied with the adapter plate.
Before installation, block the tires of the trailer and support the trailer tongue. These steps ensure the trailer is stable and safe while you work on removing the old jack assembly and installing the adapter plate.
You will need a 3/4" wrench to remove the locknut from the XP jack swivel assembly. The installation instructions do not specify additional tools required for the remaining steps, though standard tools for tightening fasteners to the specified torque values will be needed.
The adapter plate comes with a new locknut for securing the adapter plate to the jack mount. The installation instructions also reference 3/8" cap screws and lock washers for attaching the F2 jack to the adapter plate, though it is not explicitly stated whether these are included or must be supplied separately.
The adapter plate must be installed so that the letters "TOP" are legible and the plate is seated into the welded mount. The adapter plate locating tabs must be seated into the mount holes. This ensures proper alignment and secure mounting.
The locknut securing the adapter plate to the jack mount must be tightened to 65–75 ft-lbs.
The 3/8" cap screws with lock washers attaching the F2 jack to the adapter plate must be tightened to 25–35 ft-lbs.
Yes, you should adjust the mount height of the F2 jack as needed after installing the adapter plate. The manual directs you to refer to the jack instruction sheet F3576 for details on how to perform this adjustment.
The maximum rated capacity is not specified in this manual. You must refer to the stamped markings or decals on the product itself to obtain the rated capacity. If you cannot find this information, contact Cequent Performance Products at 1-800-632-3290 or www.cequentgroup.com.
No. The operator and bystanders must never position any part of their body under any portion of the adapter plate or the load being supported. This is a critical safety requirement to prevent serious injury or death.
Before manually moving the trailer, crank the jack to its lowest position. This reduces the risk of the jack failing or causing injury during manual movement.
No. Trailer jacks, including those used with the F3811 adapter plate, are designed for vertical loading only. Excessive side forces may cause the jack to fail and must be avoided.
Always replace bent, broken, or worn parts before using the product. Do not attempt to repair or continue using damaged components, as this may result in product failure and serious injury.
Secure the load, vehicle, and trailer from rolling by blocking the wheels when operating the jack or coupling the trailer. This prevents unexpected movement and reduces the risk of injury or property damage.
No. Do not attempt to weld bolt-on brackets or straps to the tongue. If you need a welded mounting solution, special brackets are available for weld-on applications. Contact the manufacturer for details.
The F3811 is designed to replace an XP jack swivel assembly with an F2 jack on any trailer with a compatible jack mount. Verify your current jack type and that your trailer has the welded mount required for this adapter plate. Contact the manufacturer at 1-800-632-3290 if you are unsure.
You need a 3/4" wrench to remove the old locknut. You will also need tools to tighten the new locknut to 65–75 ft-lbs and the cap screws to 25–35 ft-lbs, such as a torque wrench.
Tighten the locknut securing the adapter plate to the jack mount to 65–75 ft-lbs. Tighten the 3/8" cap screws attaching the F2 jack to the adapter plate to 25–35 ft-lbs.
The capacity is not listed in this manual. Check the stamped markings or decals on your product, or contact Cequent Performance Products at 1-800-632-3290.
No. Never position any part of your body under the adapter plate, jack, or load. This is a critical safety hazard.



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Sam
Ordered online. Shipment arrived on time and with all the correct parts. Great customer service and friendly staff. Also, pricing was great!
May 22, 2023