Dual-piston rapid pump
Two pistons share every stroke, so the saddle covers the empty travel in a few pumps instead of a dozen. The load stroke stays slow and controlled where it matters.
Jack Boss hydraulic floor jacks
lift the truck. Not just the tire.
Five hydraulic floor jacks for people who work under vehicles all week: four at 3 tons, each built around a different job, and a 4-ton dual piston jack for full-size trucks.
4 TON8,000 lb rated
20.5″Max lift height
- 3.3″Lowest saddle entry, 3-ton aluminum
- 2 pistonsRapid pump reaches load faster
- 360°Rear swivel casters, loaded or empty
- 2 valvesBypass and overload protection
How a Jack Boss jack is built
Three things separate a shop jack from a trunk jack: how fast it reaches the vehicle, what it puts against the frame, and whether it moves with the car as it goes up.
Rubber pad on the saddle
The contact point is a compressible rubber disc, not bare steel. It grips the pinch weld or frame rail and keeps the paint and seam sealer intact.
Casters that turn under load
The rear casters swivel a full circle, so the jack tracks the arc of the suspension as the vehicle rises instead of dragging or skewing the saddle.
Five Jack Boss floor jacks, five jobs
Every model lifts 3 tons except the last one. What changes is how low it starts, how fast it gets there, and what ground it rolls on.
3 ton · 6,000 lb
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3-Ton Aluminum
Aluminum body, about 57 lb. Light enough to carry to a track day in one hand.
Low cars, off-site work
3 ton · 6,000 lb
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3-Ton Dual Pump
Two pumps working together close the gap to the frame in a handful of strokes.
General shop work
3 ton · 6,000 lb
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3-Ton Fast Lift
Geared for speed from the floor to full height when you rotate tires all day.
Tire and brake jobs
3 ton · 6,000 lb
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3-Ton Off Road
Oversized wheels and a taller frame that rolls on gravel, grass and trail dirt.
Lifted trucks, trail repairs
4 ton · 8,000 lb
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4-Ton Dual Piston
Full steel with the most capacity and the tallest reach in the lineup.
Full-size pickups, vansCompare Jack Boss floor jacks
Pick by ground clearance first and rated capacity second.
| Specification | AluminumLightest |
Dual PumpAll-round |
Fast LiftQuickest |
Off RoadRough ground |
Dual PistonMost capacity |
|---|---|---|---|---|---|
| Rated capacity | 3 tons | 3 tons | 3 tons | 3 tons | 4 tons |
| Lift range | 3.3″ – 18.1″ | 3.5″ – 19.6″ | 3.5″ – 20.1″ | 5.7″ – 22.4″ | 3.9″ – 20.5″ |
| Frame material | Aluminum with steel lift arm | Steel | Steel | Steel | Steel |
| Jack weight | About 57 lb | About 68 lb | About 70 lb | About 78 lb | About 85 lb |
| Pump | Dual piston | Dual pump | Fast lift, single stroke to contact | Dual piston | Dual piston |
| Wheels | Standard casters | Standard casters | Standard casters | Oversized wheels for loose ground | Heavy-duty casters |
| Suited to | Sports cars, sedans | Sedans, crossovers | Repeat tire and brake work | Lifted trucks, Jeeps, trailside | Full-size pickups, vans |
| Where to buy | Amazon | Amazon | Amazon | Amazon | Amazon |
Swipe the table sideways to see all five models.
From a lowered coupe to a lifted truck
Most home shops keep one jack. Pick the one that matches what is usually on the lift.
Low and lowered
The aluminum jack's 3.3-inch saddle clears a front lip without ramps or wood blocks.
Daily drivers
Dual Pump and Fast Lift both reach high enough to put stands under a crossover.
Trucks and trails
Off Road rolls on dirt; the 4-ton takes the front axle of a full-size pickup.
What buyers say
Reviews from people who bought a Jack Boss jack and used it on their own vehicle.
This Jack Boss 3-ton low profile floor jack is absolutely excellent. The aluminum and steel construction makes it surprisingly light for a 3-ton jack, yet it feels rock solid and built to last. The low profile design gets under my vehicles with ease—even my lowered truck is no problem.
The dual piston system is a game changer. This thing lifts FAST compared to my old single-piston jack. What used to take forever now takes seconds, which is a huge time-saver whether I'm doing quick jobs or more involved work. The lift is smooth and controlled throughout the entire range.
3-Ton AluminumpdonoNice jack and works easily. Much bigger than expected. It’s more of a professional jack than around the garage jack. But still very nice.
3-Ton Dual PumpEDIt is great my husband uses it all the time. It works excellently for him. And especially since having sons in law who need help with his big truck.
4-Ton Dual PistonJanetThis floor jack is sturdy, well-built, and very easy to use. It lifted my vehicle smoothly and felt stable throughout the job. The handle works well, and the wheels make it easy to position. It has great lifting capacity and offers excellent value for the price. I’m very satisfied with this purchase and would highly recommend it to anyone looking for a dependable floor jack.
3-Ton Fast LiftYesenia Garcia LopezQuestions we get asked
Short answers on capacity, safety and fit. Anything not covered here, send it to the shop.
Can I work under a vehicle held up by the jack alone?
No. A floor jack lifts, jack stands hold. Raise the vehicle, place rated stands under the manufacturer's support points, then lower the jack until the stands take the weight before anything goes under the car.
Does a 3-ton jack lift a 6,000 lb truck?
It does not need to. A floor jack lifts one end or one corner, so it carries roughly half the vehicle weight or less. That said, pick capacity with margin: a 4-ton jack is the safer choice for a full-size pickup or a loaded van.
Four jacks are rated 3 tons. Which one do I want?
Aluminum if you carry it to the car. Dual Pump if it lives in one bay and does a bit of everything. Fast Lift if you are pulling wheels off all day and the seconds add up. Off Road if the vehicle is lifted or you work on gravel and dirt.
The jack lifts but will not hold. What should I check?
Usually air in the hydraulic system. Close the release valve, remove the filler plug and pump the handle quickly 15 to 20 times to bleed it, then top up with hydraulic jack oil. If it still drifts down under load, stop using it and contact us.
Where do I put the saddle?
On the lift points in the owner's manual. On most unibody cars that is the reinforced pinch weld behind the front wheel; on body-on-frame trucks it is the frame rail or the differential housing. Never lift on the floor pan, an oil pan or a control arm.