For a cover to use on the Bulldog Powered Drive Trailer Jack # BD500199 referenced in your question, I recommend the Ultra-Fab Protective Cover for Electric A-Frame Jacks # UF38-944020. This will easily slip over the jack and can be secured using the drawstring. This cover measures 12 inches x 14-1/2 inches. I have attached a video demonstration of the cover for you to check out.
Application: for use on heavy duty trucks, semi trailers, cargo trailers, boat trailers, work vehicles and a wide or narrow overland vehicle requiring quality DOT rated lighting. Product Features: 100% Brand New COMPLETELY SEALED AND WATERPROOF Super bright Red LED Surface Mount, Sealed 17" light Each light has 23 Super Bright Diodes for a Bright Performance. Functions as clearance, side marker or identification light, stop, turn, tail and brake light These light bars have 3 wires for ground, brake, turn and tail light. They have 2 screw holes for mounting Comes with a Polycarbonate Lens with All Weather Housing for durability Convert your old incandescent lights to more modern LEDs. POLYCARBONATE LENS IS SONIC WELDED TO THE HOUSING Voltage:12V Size: 44 x 2.6 x 2.2cm (17 x 1 x 0.88 Inch).
Founded in 1977, Harbor Freight Tools is the leading discount tool retailer in the U.S. selling great quality tools at "ridiculously low prices" in our 900 stores nationwide and on its website www.harborfreight.com. Harbor Freight Tools stocks over 7,000 items in categories including automotive, air and power tools, shop equipment and hand tools. With a commitment to quality and a lifetime guarantee on all hand tools, Harbor Freight Tools is a favorite of automotive and truck repair shops, government agencies, schools, manufacturers, contractors and tool enthusiasts who want top-quality and great selection and value. The results speak for themselves - with over 40 million customers and thousands of people switching to Harbor Freight Tools every day.
I have used this cover to cover the tow jack on my trailer which has been parked up on the drive of my beach house for the last 12+ months. It has therefore been subjected to a marine type environment which plays havoc with house door fittings etc. The cover has survived intact and is now still in an "as new" condition. I am very pleased with this purchase and highly recommend it. 424779

The RV electric jack cover protects your unit from UV damage and environmental hazards. Universal RV electric jack covers are an excellent solution for protecting the finish and prolonging the original appearance of these systems. Each cover has 1/8″ strong and durable draw rope with a barrel cord lock in the hem for quick easy installation and removal. Recommended for storage only.
From the center of the shaft to the front outside edge of the motor housing is 3-1/2 inches. I included some of the mounting plate when I measured for height, which is 8-1/4 inches, since that sticks out over the shaft as well. I also measured from the bracket that fixes to your trailer's A-frame to the bottom of the mounting plate for the motor and that measured 13 inches. See included picture for a visual. To make sure that you have a secure power connection to the jack motor I recommend...
Replaces Dexter Part Numbers: K23-108-00 & K23-181-00. 4pcs Electric Trailer Brake. Assembly Set. 2 x Left Side. 2 x Right Side. 12" x 2" Assemblies. AllLIFT SUPPORTS sold carry a. ONE YEAR manufactures warranty against defect factory defects (not wear & tear), this is a parts only warranty, and does not cover and labor, towing, car rental, or any other expense.
Replaces the bottom housing kit for Husky Brute Series HB4500 and HB4500R electric trailer jacks (HT87641 and HT87247). Kit includes covers to protect both the gearbox and the motor assembly from Features: Replaces the bottom housing kit for Husky Brute Series HB4500 and HB4500R electric trailer jacks Fits HT87641 and HT87247 Included covers protect both the motor assembly and the gearbox
The Camco Electric Tongue Jack Cover helps protect your electric tongue jack when it is not in use and in storage. The durable 3-layer spunbond polypropylene provides protection from harmful UV rays, excess moisture and dirt and debris. Tongue Jack Cover accommodates most styles and brands of Electric Tongue Jacks, and measures 18" tall x 7.5" wide x 8.5" deep.
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