An estimated 11.2 million U.S. households now own an RV, and the majority of those are towable travel trailers, not motorhomes, according to the RV Industry Association’s ownership survey. Every one of those towables shares a part that gets almost no attention until it fails at a boat ramp or a campsite: the tongue jack bolted to the front of the A-frame. It is the single component standing between you and hitching up, and it is also one of the cheapest, most overlooked upgrades for getting a trailer sitting level front-to-back before you crawl underneath it.
This guide covers trailer tongue jacks specifically — the crank or power jack mounted at the front of a travel trailer, utility trailer, or boat trailer’s A-frame. That is a different product from stacked leveling blocks, which go under the tires for side-to-side leveling, and different again from RV scissor jacks, which are stabilizer jacks bolted under a motorhome’s frame. Confusing the three is the single most common mistake first-time trailer owners make when they search for “leveling jacks” and end up buying the wrong part.
Key Takeaways
- A tongue jack lifts and supports the trailer’s tongue weight only — typically 10-15% of gross trailer weight — not the entire loaded trailer.
- Top-wind, side-wind, drop-leg, and electric/power jacks all mount to the A-frame but differ in crank effort, lift speed, and ground clearance.
- Weight capacity ratings on tongue jacks (1,000-5,000 lb+) refer to static lift capacity, not the dynamic load the jack sees while towing.
- Pairing a tongue jack with leveling blocks under the tires gets you level in both directions; a tongue jack alone only handles front-to-back pitch.
- Electric jacks add convenience and are worth it for solo campers, but a rebuildable top-wind jack is usually the more durable long-term choice.
A-Frame Tongue Jack Types and Weight Capacity
Every towable trailer with an A-frame — travel trailers, pop-up campers, utility trailers, enclosed cargo trailers, and boat trailers — needs some kind of jack at the front to raise the tongue off the hitch ball, support it while parked, and help level the trailer nose-to-tail. Unlike a motorhome’s scissor jacks, which stabilize a self-powered vehicle that’s already sitting on its own suspension, a tongue jack is doing structural work: it’s the only thing holding the front of an unhitched trailer up.
Top-wind jacks mount vertically to the A-frame and are cranked with a removable handle turned from above. They’re the most common style on travel trailers because the crank sits at a comfortable working height and the mechanism is simple to service. Side-wind jacks use a right-angle gearbox so the handle turns horizontally, which matters when a top-wind handle would hit the propane tanks or a bumper-mounted accessory. Drop-leg jacks are common on utility and cargo trailers — a swing-away leg folds down and locks for towing clearance, then swings under load for stability; they’re rated for less finesse and more brute static support. Electric or power jacks replace the hand crank with a 12V motor, letting one person raise or lower the tongue from a wall switch or wireless remote — a real convenience for solo campers or anyone hitching on a slope.
Weight capacity is where buyers most often get confused. A jack rated for 5,000 lb is not rated to lift a 5,000 lb trailer — it’s rated to lift and hold the tongue weight, which industry guidance from the Recreation Vehicle Industry Association puts at roughly 10-15% of the trailer’s gross weight. A 7,000 lb travel trailer typically has 700-1,050 lb of tongue weight, well within a 2,000 lb jack’s rating. Sizing a jack to gross trailer weight instead of tongue weight leads people to overpay for capacity they’ll never use, or in rarer cases, undersize a jack on a trailer with a heavy tongue load from a generator or storage box mounted up front.
The Best Trailer Leveling Jacks Worth Buying
These seven jacks cover the realistic range of towable trailers — from a 5×8 utility trailer to a 30-foot travel trailer — at price points from budget swing-away units to full electric power jacks.
Bulldog 500122 Square Tube A-Frame Jack — approx. $75-$95
Best for: travel trailers and small campers needing a reliable top-wind replacement.
Bulldog’s square-tube jack is the de facto OEM replacement on a huge share of towable trailers built in the last two decades, largely because it bolts to the same footprint as the factory jack it’s replacing. It’s rated at 2,000 lb lift capacity with a 15-inch travel range, uses a sealed, greasable gearbox, and comes with a footpad and a stow-away crank handle bracket. The all-steel construction with a baked-on enamel finish holds up well against road salt and mud spray better than the thin zinc-plated jacks it typically replaces.
Ultra-Fab Products 19-950091 Power Tongue Jack — approx. $170-$220
Best for: solo campers and anyone hitching regularly without a helper.
This is a 3,500 lb capacity electric jack with a built-in LED work light and a corded remote, and it’s one of the more widely stocked power jacks at RV dealers, which matters if you ever need warranty service on the road. Lift speed runs a bit over an inch per second, so a full 18-inch stroke takes well under 30 seconds. The motor housing is sealed against water intrusion, a detail that matters because power jacks mounted low on the A-frame take more road spray than any other component on the trailer.
Husky Towing 89014 Trailer Tongue Jack — approx. $60-$80
Best for: budget-conscious owners of small to mid-size travel trailers.
Husky’s round-tube top-wind jack is rated for 2,000 lb and uses a simple, low-part-count design that’s easy to grease and rebuild in a driveway. It ships with both a top handle and a removable side-crank adapter, so it can be run either top-wind or side-wind depending on clearance around propane tanks or a bike rack. It lacks the sealed gearbox of pricier jacks, so it needs more frequent lubrication in wet climates, but it’s straightforward to service and parts are cheap.
Lippert Components Power Tongue Jack — approx. $200-$260
Best for: newer travel trailers already running Lippert chassis components.
Lippert is the OEM chassis and jack supplier for a large share of North American travel trailer manufacturers, so this power jack is frequently a direct factory-match replacement rather than an aftermarket swap. It’s rated at 3,500 lb, includes a wireless remote on some kit versions, and integrates with Lippert’s broader leveling and stabilizer electronics on trailers already equipped with them. The tradeoff is a narrower universal fit — measure your factory mounting bracket before ordering, since Lippert offers several bolt patterns.
Fulton HD Series Swing-Back Trailer Jack — approx. $45-$65
Best for: utility trailers, boat trailers, and cargo trailers needing a drop-leg design.
Fulton’s swing-back jack is built for trailers that need the jack folded flush against the tongue for road clearance, which describes most boat and utility trailers rather than travel trailers. It’s rated from 1,200 to 2,000 lb depending on the model, uses a simple pin-and-swing mechanism instead of a wind-up crank for the stowed position, and the footprint is small enough to clear a step bumper on tow vehicles. It’s not designed for fine-grained leveling adjustment the way a top-wind jack is — it’s a support-and-tow jack first.
Dutton-Lainson 22350 Marine Trailer Jack — approx. $50-$70
Best for: boat trailers exposed to saltwater or frequent ramp dunking.
Boat trailer tongue jacks live a harder life than travel trailer jacks because they’re routinely submerged at launch ramps. Dutton-Lainson builds this jack with a corrosion-resistant coating and a wheel-equipped footpad instead of a flat foot, which lets you roll the trailer short distances by hand once the tongue is jacked up — useful for repositioning at a crowded ramp or storage yard. Capacity tops out around 1,200 lb, which is plenty for the light tongue weight typical of boat trailers.
etrailer/Reese Drop-Leg A-Frame Jack — approx. $55-$75
Best for: cargo and enclosed trailers with limited ground clearance.
This drop-leg jack folds up nearly flat against the A-frame for maximum road clearance, which matters on low-slung enclosed cargo trailers where a bulky top-wind jack can drag on driveway aprons. It’s rated at 2,000 lb, uses a simple two-position pin lock (stowed or deployed) rather than continuous wind-up adjustment, and mounts with a bolt-on bracket that fits most 2×2 to 3×3-inch A-frame tubing.
Tongue Jack Weight Capacity Comparison
Manual vs. Electric: Lift Speed and Effort
The other practical difference between jacks isn’t capacity, it’s how much cranking you’ll do. A top-wind or side-wind jack typically needs 25-40 turns of the handle to raise a trailer tongue the 6-10 inches needed to clear a hitch ball, and each turn moves roughly a half-inch. An electric jack covers the same distance in well under a minute at the push of a button, which matters far more than it sounds like the first time you’re hitching solo in the rain.
| Jack Style | Typical Lift Range | Effort to Operate | Best Use Case |
|---|---|---|---|
| Top-wind (manual) | 15-18 in | Moderate, 25-40 crank turns | Travel trailers, general use |
| Side-wind (manual) | 12-16 in | Moderate, tight-clearance turning | Trailers with propane tanks blocking top access |
| Drop-leg / swing-back | Fixed 2-position | Low, pin-and-swing only | Utility, cargo, and boat trailers |
| Electric / power | 18-21 in | Minimal, switch or remote | Solo campers, frequent hitching |
A tongue jack only solves half the leveling problem. It raises and lowers the front of the trailer and can walk the tongue side to side a little on some drop-leg designs, but it cannot compensate for a site that’s higher on one side than the other — that’s a job for blocks or ramps under the tires. If you’re setting up at an unlevel campsite or boat ramp, pair a tongue jack with leveling blocks under the tires for full side-to-side and front-to-back leveling — see our guide to the best leveling blocks for stack blocks versus curved ramps and how to size them to your tire width.
It’s also worth being clear about what a tongue jack is not. It is not a stabilizer jack, and it’s not rated for the kind of load a motorhome’s corner-mounted jacks carry. If you’re towing a motorhome — meaning you’re really asking about a Class A, B, or C’s built-in stabilizing legs rather than a towable trailer’s front jack — or you need stabilizer jacks instead of a tongue jack, see our guide to the best scissor jacks, which covers the difference between emergency roadside scissor jacks and RV stabilizing jacks in detail.
Frequently Asked Questions
What’s the difference between a tongue jack and a leveling block?
A tongue jack is a permanently mounted, cranked or motorized jack on the trailer’s A-frame that raises and lowers the tongue for hitching and front-to-back pitch. Leveling blocks are separate, portable stacked plastic or curved-ramp pieces you drive the tires up onto to correct side-to-side lean. They solve different axes of the leveling problem and most trailer owners need both.
Can I use a tongue jack to level my whole trailer?
Only front-to-back. A tongue jack raises or lowers the front of the trailer relative to the axle, but it can’t correct for the trailer sitting higher on one side than the other — that requires blocks or ramps under the tires on the low side.
What weight capacity tongue jack do I need?
Size the jack to your trailer’s tongue weight, not its gross weight. Tongue weight typically runs 10-15% of gross trailer weight, so a 6,000 lb trailer usually has 600-900 lb of tongue weight, comfortably within a 2,000 lb-rated jack. Check your trailer’s data plate or weigh the tongue at a truck scale if you’re unsure.
Are electric tongue jacks worth the extra cost over manual?
For solo campers or anyone who hitches up frequently, yes — the convenience of raising or lowering the tongue at the push of a button is a real quality-of-life upgrade, especially in bad weather. For occasional use or budget-focused buyers, a manual top-wind jack does the same job for a third of the price and has fewer parts that can fail.
How do I know if my tongue jack needs to be replaced?
Grinding or slipping under load, visible rust pitting on the inner tube, a bent outer housing, or a footpad that no longer sits flat are all signs it’s time to replace rather than repair. Most top-wind jacks are inexpensive enough that replacement is more cost-effective than trying to source internal gear parts for an older unit.
The Bottom Line
A trailer tongue jack is a small, inexpensive part that does an outsized amount of work every time you hitch, unhitch, or level your trailer at a site. For most travel trailers, a 2,000 lb top-wind jack like the Bulldog or Husky covers the job reliably and cheaply; solo campers who hitch often should look hard at an electric unit like the Ultra-Fab or Lippert. Utility, cargo, and boat trailer owners are usually better served by a drop-leg or swing-back jack sized to their lighter tongue weight, like the Fulton or Dutton-Lainson. Whichever style you choose, match the rated capacity to your trailer’s actual tongue weight, not its gross weight, and remember that a tongue jack only solves half of the leveling equation — pair it with blocks under the tires for a truly level setup front to back and side to side.
