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 $1,385.95
The 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.
- 20 gpmFlow
- 30 min onDuty cycle
- NoMeter
- YesUL listed
Price checked November 3, 2026. As an Amazon Associate we earn from qualifying purchases.
- A 10 micron filter in the box keeps dirt and water away from modern diesel injectors
- 20 gallons a minute with an automatic nozzle and a 14 ft hose
- UL listed with a limited lifetime warranty
- Draws 34 A, more than any other 12V pump here, so wiring must be heavy
- Must rest 30 minutes after each 30 minutes of running
- Comes with a diesel nozzle that will not fit gasoline filler necks
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its power. How we rank explains each one.
Specifications
| Model number | G20-012AD+FK (162020-03) |
|---|---|
| Pump | |
| Power | 12V DC |
| Flow | 20 gpm |
| Duty cycle | 30 min on |
| Current | 34 A |
| Max pressure | 12 psi |
| Max head | 15 ft |
| Mount | Bung |
| Safety | |
| UL listed | Yes |
| Explosion-proof motor | Yes |
| Gasoline approved | Yes |
| In the box | |
| Meter | No |
| Nozzle | Automatic |
| Hose | 14 ft |
| Filter | Yes |
| Suction pipe | Yes |
| Power cable | 18 ft |
| Build | |
| Weight | 19 lb |
| Warranty | Limited lifetime |
Alternatives in this power
For filling big diesel equipment from a truck tank. It pumps 20 gallons a minute for about $70 more than the 15 GPM FR1210H.
Amazon $570.31A strong all-round 12V kit: faster than the 15 GPM pumps, hands-free filling and theft-resistant. Pick it if you fill several machines a day.
Amazon $614.99Compare
Compare the GPI G20 12V 20 GPM with Filter with any other fuel transfer pump →
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