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Getting a vehicle safely off the ground is only half the job, because you also need secure support once it is raised. The Powerbuilt 2 Ton UniJack 620470 combines a hydraulic bottle jack and a locking jack stand in one compact tool, so you can lift and hold at the same approved lift point. Its 4,000 lb capacity and 8-5/8 in to 18-3/8 in lift range suit many sedans, minivans, crossovers, and some light-duty vehicles, but the relatively tall 8-5/8 in starting height can rule out low-clearance cars. This review explains the fit, safety system, setup, storage, and limitations you should check before buying.
Quick Verdict
Rating: 8.4/10, Recommended with caveats
Best For: DIY vehicle owners who have enough ground clearance and want one tool that both lifts and mechanically locks at the lift point.
Bottom Line: The UniJack saves space and simplifies support by combining two functions in one unit. Its main tradeoff is fit: the 8-5/8 in minimum height is too tall for some low vehicles, and you still need the correct factory-approved lifting point and a stable work surface.
Key Takeaways
- The Powerbuilt 620470 combines a hydraulic bottle jack with a built-in locking support, reducing the need to position a separate stand at the same lift point.
- Rated capacity is 2 tons (4,000 lb), with a verified lift range of 8-5/8 in to 18-3/8 in.
- The built-in ratcheting safety bar mechanically locks the raised support position.
- A wide base improves stability, but you should still use the tool on a firm, level surface and at a vehicle-approved lifting point.
- The 8-5/8 in minimum height is the biggest fit limitation, especially on low sedans or vehicles with low jacking points.
Key Specifications
| Specification | Detail |
|---|---|
| Brand | Powerbuilt |
| Model | 620470 |
| Product type | Hydraulic bottle jack and jack stand combination |
| Rated capacity | 2 tons / 4,000 lb |
| Lift range | 8-5/8 in to 18-3/8 in |
| Overall dimensions | 7.25 x 8 x 9.5 in |
| Item weight | About 15.4 lb |
| Base dimensions | 6-1/2 x 7-1/2 in |
| Locking system | Built-in ratcheting safety bar |
| Lifting surfaces | Concave and flat lifting surfaces |
| Saddle extension | Cast steel extension |
| Warranty | One year |
| Common vehicle use | Sedans, minivans, crossovers, and compatible light-duty vehicles within capacity and clearance limits |
What Is the Powerbuilt 2 Ton UniJack?
The Powerbuilt 620470 is a portable hydraulic lifting tool with a built-in support mechanism. Instead of lifting with one jack and then finding room for a separate stand, you place the UniJack at an approved lift point, raise the vehicle, and let the ratcheting safety bar lock the support structure in the raised position.
This design is especially useful on some unibody vehicles because factory lifting points can be limited. The UniJack also provides concave and flat lifting surfaces for different contact points. It is not a universal fit, though. You need enough clearance for its 8-5/8 in starting height, and your vehicle manual must permit the chosen lifting location.
Before You Buy: Measure the height from the ground to your approved jacking point before ordering. If that point sits below 8-5/8 in, the 620470 may not slide into position without raising the vehicle by another approved method.
Who Should Buy It?
Best For
- DIY owners who want a compact lift-and-support tool for tire, brake, or underbody work.
- Vehicles with approved lift points that are at least 8-5/8 in off the ground.
- Garages or vehicle storage kits where space is tighter than it would be for a floor jack plus separate stands.
Skip If
- Your jacking point is lower than the UniJack’s 8-5/8 in minimum height.
- Your required lifting load exceeds the 4,000 lb rating.
- You regularly work on sloped, soft, unstable, or otherwise unsuitable surfaces.
Design and Functionality of the Powerbuilt 2 Ton UniJack
The main advantage is the patented two-in-one layout. Hydraulic action raises the load, while the ratcheting safety bar provides a mechanical lock as the support rises. That arrangement reduces the awkward step of lifting a unibody car at one point and then trying to place a separate stand in nearly the same location.
Powerbuilt also uses two lifting surfaces, concave and flat, so the contact area can suit more than one type of lift point. A cast steel saddle extension adds strength at the adjustable contact area. At about 15.4 lb, the unit is portable enough to move around a home garage or keep with vehicle tools, although it is still much heavier than a small emergency scissor jack.
Capacity, Range, and Stability Features
The 620470 is rated for 2 tons, or 4,000 lb. The verified lift range runs from 8-5/8 in to 18-3/8 in. That upper range gives you useful working height for many cars and crossovers, but the lower number matters just as much because it determines whether the tool can reach the lift point before you start pumping.
A wide base helps the UniJack resist tipping and reduces sinking compared with a narrow bottle-jack footprint. Still, a wide base does not make an uneven or soft surface safe. For vehicle service, you should position the jack vertically on a firm, level surface, chock the wheels that remain on the ground, and follow the lifting instructions in your vehicle manual.
Pro Tip: Check both clearance and lift-point shape before first use. A few minutes with a tape measure and your owner’s manual can tell you whether the 8-5/8 in starting height and available lifting surface are a practical match.
Build Quality, Warranty, and Standards
Powerbuilt describes the 620470 with a cast steel saddle extension and a built-in ratcheting safety bar. Current retail listings also identify a one-year warranty. These are useful details for a tool that may sit unused for weeks and then be expected to lift smoothly when maintenance is due.
Retailer documentation lists the product as meeting or exceeding ASME/PALD requirements, while another major automotive retailer lists ANSI compliance. Because standards language can vary between listings and revisions, you should check the markings and current manual supplied with your unit if formal compliance is important for shop or workplace use.
How It Performs in Real Use
For Tire and Brake Work
The combined lift-and-lock design is most useful when you need one wheel off the ground and the vehicle has a suitable lift point. You do not have to raise the car with one tool and then reposition a separate stand into limited space. The 18-3/8 in maximum height also gives you more range than many emergency jacks.
For Unibody Cars and Crossovers
Unibody vehicles often have designated lifting points, so the UniJack’s single-point lift-and-support concept can make setup simpler. The important limitation is clearance. Some low sedans may not have the 8-5/8 in of space needed to place the jack under the approved point.
For Garage Storage and Roadside Carry
The approximately 7.25 x 8 x 9.5 in overall size is compact compared with a full floor jack and stand set. At about 15.4 lb, it is realistic to carry in a truck, crossover, or garage cabinet, although you should secure it during transport so it cannot move around the cargo area.
For Flat-Surface Construction Tasks
Powerbuilt also describes the dual lifting saddle and platform as useful for lifting on flat surfaces in jobs such as floor-joist or foundation-plate work. That can add value beyond automotive use, but you should stay within the 4,000 lb rating and follow the product instructions for the specific load.
Setup Tips Before First Use
- Read both manuals: Follow the UniJack instructions and your vehicle owner’s manual before choosing a lift point.
- Measure clearance: Confirm that the approved lifting point is at least 8-5/8 in above the ground.
- Work on a stable surface: Use a firm, level work area rather than a slope, loose gravel, or unstable ground.
- Chock the wheels: Prevent the vehicle from rolling before lifting.
- Center the load: Align the saddle with the approved lifting point before applying load.
- Do not exceed capacity: Confirm that the load placed on the jack is within its 2-ton rating.
- Lower slowly: Follow the release procedure in the manual and keep hands, feet, and tools clear of the vehicle as it comes down.
Maintenance and Storage
Hydraulic tools work best when they are kept clean, stored upright as directed, and checked for damage or fluid leaks before use. Inspect the saddle, ratcheting lock, base, handle, and hydraulic action regularly. If the jack does not raise, hold, lock, or lower normally, stop using it until the cause is corrected according to the manual.
For storage, keep the unit dry and protected from impact. Its compact footprint is one of its practical strengths, but do not let portability become a reason to skip inspection after it has ridden in a vehicle or been stored for a long period.
Compatibility and Safety
The 4,000 lb rating is a load limit, not a promise that the UniJack fits every vehicle under a certain curb weight. Vehicle geometry, approved lift locations, clearance, and how much load is carried at the selected point all matter. If you are unsure about the correct point or support method, use the vehicle manufacturer’s guidance or ask a qualified technician.
You should not treat the wide base as permission to work on an uneven surface. Keep the jack vertical, avoid exceeding its rating, and never place any part of your body under a vehicle unless the lifting and support setup is appropriate, mechanically secure, and used exactly as directed.
Pros and Cons
Pros
- Combines a hydraulic jack and locking support in one unit.
- 4,000 lb capacity covers many common DIY automotive jobs.
- 8-5/8 in to 18-3/8 in range provides useful vertical adjustment.
- Concave and flat lifting surfaces add flexibility at compatible lift points.
- Compact size makes garage storage and transport easier than a full floor-jack setup.
Cons
- The 8-5/8 in minimum height is too tall for some low-clearance vehicles.
- A 2-ton rating is not enough for every truck, SUV, trailer, or lifting task.
- Correct lift-point selection and a firm, level surface are still essential for safe use.
Is It Worth the Price?
The Powerbuilt 620470 makes the most sense as a specialized mid-range garage tool rather than the cheapest way to lift a vehicle. You are paying for the convenience of combining two jobs, lifting and mechanically supporting, at one location. That can be strong value when your vehicle has limited room around its approved jack point.
It is worth considering if compact storage, portability, and single-point lift-and-support operation matter more to you than ultra-low clearance or maximum capacity. It is not the best fit if you already own a good floor jack and stands, need to work under very low cars, or routinely service heavier vehicles.
How It Compares to Alternatives
If you need more capacity and height, the Powerbuilt 3 Ton UniJack 620471 raises the rating to 6,000 lb and has an 11 in to 21 in lift range. That makes it better suited to many trucks, SUVs, vans, and Jeeps, but its 11 in minimum height makes clearance even more restrictive on lower vehicles.
A conventional setup such as Torin BIG RED 2 Ton jack stands plus a separate compatible floor or bottle jack gives you more freedom to choose the lifting tool and support-point location independently. The tradeoff is more equipment, more storage space, and the need to transfer the load correctly from the lifting jack to the stands.
Frequently Asked Questions
What is the lift range of the Powerbuilt 620470?
The verified range is 8-5/8 in at the low end and 18-3/8 in at maximum lift. Measure your approved jacking point before buying because the minimum height can be too tall for low cars.
Can the UniJack replace a separate jack stand?
The 620470 is specifically designed to lift and then hold the load with its built-in ratcheting safety bar. Use it only within its rated capacity, at an approved lift point, and according to the supplied instructions.
Can you use the Powerbuilt UniJack on uneven ground?
You should not rely on it for vehicle service on uneven or unstable ground. Position the unit vertically on a firm, level surface and follow the manual, even though the wide base is designed to improve stability and reduce sinking.
Will the 2 Ton UniJack fit a low sedan?
Not always. The jack starts at 8-5/8 in, so a low sedan with a lower factory jacking point may not have enough clearance. Measure first rather than assuming vehicle type alone determines fit.
How much weight can the Powerbuilt 620470 hold?
Its rated capacity is 2 tons, or 4,000 lb. Do not exceed that load, and confirm that the selected lifting point and your vehicle’s service instructions are compatible with the task.
What maintenance does the UniJack need?
Inspect it for hydraulic leaks, damage, corrosion, and smooth lock operation before use. Keep it clean and stored as directed, and follow the manual for hydraulic-fluid checks or service rather than using an improvised procedure.
Does the Powerbuilt 620470 include a warranty?
Current Powerbuilt and retailer information lists a one-year warranty for the 620470. Check the warranty terms included with your unit for claim requirements and exclusions.
Who should choose the 3 Ton UniJack instead?
The 3 Ton Powerbuilt 620471 is worth comparing if you need up to 6,000 lb capacity or a higher 21 in maximum lift. Its minimum height is 11 in, so it is generally a better match for taller vehicles than low-clearance cars.
The Bottom Line
The Powerbuilt 2 Ton UniJack 620470 is a practical choice when you want a compact tool that can lift and mechanically support at one approved vehicle point. Its 4,000 lb capacity, 8-5/8 in to 18-3/8 in range, locking safety bar, and portable size are useful for many DIY jobs, but low clearance and heavier vehicles can rule it out. Buy it when those measurements match your vehicle; choose a lower-profile or higher-capacity setup when they do not.
