SEACHOICE Fold-Up Trailer Jack for 3" x 5" Tongue, 1,000 lb Capacity — Zinc Finish, 6" Wheel

The Seachoice Fold Up Trailer Jack is a spring-loaded, side-crank jack that folds parallel to a 3" x 5" trailer tongue and provides up to 1,000 lbs of lifting capacity with 10" travel (24" max lift).

This compact, bolt-on trailer jack from Seachoice combines corrosion-resistant construction with a folding swivel for convenient stowage and reliable trailer support. Designed to fit 3" x 5" tongues and include all mounting hardware, the unit features a zinc finish that resists saltwater corrosion and a 6" wheel for easier maneuvering of boats, campers, and utility trailers.

How does the fold-up and swivel mechanism work?

The jack uses a spring-loaded plunger-pin that locks the leg in either the stowed or upright position, letting you swing the jack parallel to the tongue for travel and back up for use. The side-mounted crank makes raising and lowering the trailer straightforward while the latch keeps the jack secure during towing.

• Spring-loaded plunger-pin swivel for quick fold and lock action
• Side-crank handle for controlled lifting and lowering
• Locks in two positions: stowed parallel or upright for use
• Folds out of the way to reduce snagging while towing

What load capacity and lift range can I expect?

This Seachoice jack supports a maximum static load of 1,000 pounds and gives 10 inches of regular lift travel with an overall maximum lift of 24 inches when fully extended. The 6" wheel helps distribute load and simplifies manual positioning when hitching or unhitching a trailer.

• Maximum load rating: 1,000 lbs
• Usable travel: 10 inches; maximum extension: 24 inches
• 6" wheel for smoother manual repositioning
• Works with standard trailer-handling tasks like leveling and hitching

Is this jack durable for marine and roadside conditions?

Seachoice applied a corrosion-resistant zinc coating to protect the jack in wet and salty environments; it meets a 48-hour salt spray benchmark. The bolt-on design and included mounting hardware provide a secure attachment to trailer tongues up to 3" x 5" in size.

• Corrosion-resistant zinc finish — passes 48-hour salt spray test
• Bolt-on mounting with included hardware for firm installation
• Minimum recommended mounting width: 1.5 inches
• Fits up to 3" x 5" trailer tongues for broad compatibility

How easy is it to install and maintain?

Installation is straightforward: bolt the jack onto an appropriate-width mounting plate or tongue using the supplied hardware and ensure the plunger-pin operates freely. Maintenance is minimal — periodic lubrication of moving parts and inspection for rust will keep the jack working reliably.

• Bolt-on style includes all necessary mounting hardware
• Simple side-crank operation with easy-to-access latch
• Periodic lubrication and inspections recommended for longevity
• Manufacturer part number: 50-52021 for parts or reference

Who is this for: The Seachoice Fold Up Trailer Jack is ideal for boaters, RV owners, and utility trailer users who need a compact, corrosion-resistant jack that stows clear of the road while towing. Choose this model if you want an affordable, easy-to-install bolt-on jack with a reliable folding latch, a useful 1,000 lb lift capacity, and a 6" wheel to make manual trailer positioning easier. It’s especially suited to marine environments where salt resistance and secure stowage are important.