In hydraulics pneumatics, choosing between a bare pump and a complete power unit is a common fork in the road. You can pick a component-level gear pump and build around it, or grab a self-contained unit that runs a car lift on 110V. Here, the choice is between the new Dynamic Fluid Components GP-F20-12-P-C Hydraulic Gear Pump and the returned 110V Car Lift Hydraulic Power Unit with a 2.5-gallon reservoir.
Quick Verdict
If you're assembling or servicing a hydraulic system and want a brand-new, US-made gear pump with specific SAE ports and a clockwise rotation, the Dynamic Fluid Components GP-F20-12-P-C is the more straightforward component. If you need a ready-to-run power unit for a car lift or similar single-acting lifting job on 110V power, the returned 110V Car Lift Hydraulic Power Unit is the more complete package - and it costs about $36 less.
At a glance
| Product | Price | Condition | Pump type | Key specs |
|---|---|---|---|---|
| Dynamic Fluid Components GP-F20-12-P-C Hydraulic Gear Pump | $191.62 | New | Hydraulic gear pump | Displacement 0.73, max pressure 3650 psi, rated speed 2000 rpm, SAE ports |
| Returned 110V Car Lift Hydraulic Power Unit | $155.99 | Used | Hydraulic power unit | 110V motor, 2.5 gal reservoir, flow rate 1.7 GPM, max pressure 3200 psi |
Where each wins
For a bare component that you plan to pair with your own motor and reservoir, the Dynamic gear pump wins on condition (new) and on being a specific component with clear specs. For a complete lift setup, the 110V power unit wins on convenience, because it includes its own motor, reservoir, and pumping function in one unit.
Product notes
Dynamic Fluid Components GP-F20-12-P-C Hydraulic Gear Pump

If you already have the motor, reservoir, and controls sorted, this gear pump gives you a brand-new starting point. It's a GP-F20 series pump with a displacement of 0.73, a max pressure of 3650 psi, and a rated speed of 2000 rpm. The ports are SAE-12 inlet and SAE-10 outlet, so you'll want to match those fittings before you buy. It's also built for clockwise rotation with a 5/8" straight drive shaft. Being a bare gear pump, it won't run on its own - you'll need to supply the prime mover. That's the main limitation to keep in mind.
Returned 110V Car Lift Hydraulic Power Unit 2.5 Gal /10 Qt Post Hydraulic Pump

This is the more turnkey choice. It's a returned unit (condition: used), but it's listed as a direct replacement with a 2.5-gallon reservoir, a 110V motor, and a rated max pressure of 3200 psi. Its single-acting design moves fluid at 1.7 GPM, which is in the range you'd expect for lifting heavy vehicles. You plug it in, connect it to your lift, and the motor plus reservoir handle the rest. The trade-off is that it's used, not new, and the brand is listed as "OE quality," so you won't get the same component-level detail as the Dynamic pump. Still, it's the more complete system.
Final choice by use case
If you are building a hydraulic circuit from parts and want a new, spec-sheet-ready gear pump that you can confidently integrate into your own design, go with the Dynamic Fluid Components GP-F20-12-P-C. If you need a power unit that can run a car lift on 110V right out of the box, the returned 110V Car Lift Hydraulic Power Unit is the smarter buy - just remember it's used and not a new component.