The Fill-Rite NX25 12/24V 25 GPM is the better fuel transfer pump overall, rated 4.1 to 3.9. The Fill-Rite NX25 12/24V 25 GPM leads on duty cycle and flow. The GPI G20 12V 20 GPM with Filter wins on price and kit. The GPI G20 12V 20 GPM with Filter costs $545.96 less ($839.99 vs $1,385.95).
For fleets and contractors who fill heavy equipment all day from a truck. Nothing else here on 12V matches its continuous duty and flow, but most owners will not need it.
Amazon $1,385.95The most complete 12V diesel kit short of continuous duty: filter, auto nozzle and long hose. Worth it for anyone fueling common-rail diesel equipment from a field tank.
Amazon $839.99Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every 12V DC fuel transfer pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fill-Rite NX25 12/24V 25 GPM | GPI G20 12V 20 GPM with Filter |
|---|---|---|
| Overall rating | 4.1/5 | 3.9/5 |
| Price 20% | 4 $1,385.95 | 29 $839.99 |
| Flow 25% | 100 25 gpm | 75 20 gpm |
| Duty cycle 15% | 100 continuous duty | 50 30 min on, then rest |
| Safety listing 15% | 100 UL listed, explosion-proof motor | 100 UL listed, explosion-proof motor |
| Kit 10% | 45 auto nozzle, 18 ft hose | 68 auto nozzle, filter, suction pipe, 14 ft hose |
| Warranty 15% | 100 limited lifetime warranty | 100 limited lifetime warranty |
| Fill-Rite NX25 12/24V 25 GPM | GPI G20 12V 20 GPM with Filter | |
|---|---|---|
| Pump | ||
| Power | 12/24V DC | 12V DC |
| Flow | 25 gpm | 20 gpm |
| Duty cycle | Continuous | 30 min on |
| Current | 30 A | 34 A |
| Max pressure | 21 psi | 12 psi |
| Max head | 48 ft | 15 ft |
| Suction lift | 12 ft | - |
| Mount | Bung | Bung |
| Safety | ||
| UL listed | Yes | Yes |
| Explosion-proof motor | Yes | Yes |
| Gasoline approved | Yes | Yes |
| In the box | ||
| Meter | No | No |
| Nozzle | Automatic | Automatic |
| Hose | 18 ft | 14 ft |
| Filter | No | Yes |
| Suction pipe | - | Yes |
| Power cable | - | 18 ft |
| Build | ||
| Weight | - | 19 lb |
| Warranty | Limited lifetime | Limited lifetime |
