PowerMax 3.0 GPM 55 psi RV Pump
#3 in Under 4 GPMFull review
A cheaper stand-in for the Shurflo 4008 with the same flow, pressure and bypass. Seaflo’s 42 Series is cheaper still with a longer warranty.
Amazon $74$74
The PowerMax 3.0 GPM 55 psi RV Pump is the better RV water pump overall, rated 3.3 to 2.8. The PowerMax 3.0 GPM 55 psi RV Pump leads on value, features and pressure. The PowerMax 3.0 GPM 55 psi RV Pump costs $31.95 less ($74 vs $105.95).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Lippert Flow Max 3.0 GPM 12V
#6 in Under 4 GPMFull review
A dealer-friendly 3 GPM replacement from a big RV parts maker. Seaflo’s 42 Series gives the same flow and more pressure for less.
Amazon $105.95$105.95
Which should you buy?
- Choose the PowerMax 3.0 GPM 55 psi RV Pump for value ($24.67 per GPM ($74, 3 GPM) vs $35.32 per GPM ($105.95, 3 GPM)), features (internal bypass, runs dry without damage, thermal protection vs runs dry without damage, strainer included) and pressure (55 psi shut-off vs 50 psi shut-off).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 4 GPM RV water pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | PowerMax 3.0 GPM 55 psi RV Pump | Lippert Flow Max 3.0 GPM 12V |
|---|---|---|
| Overall rating | 3.3/5 | 2.8/5 |
| Value 25% | 68 $24.67 per GPM ($74, 3 GPM) | 44 $35.32 per GPM ($105.95, 3 GPM) |
| Flow 20% | 25 3 GPM rated open flow | 25 3 GPM rated open flow |
| Pressure 15% | 71 55 psi shut-off | 57 50 psi shut-off |
| Efficiency 10% | 50 maximum current draw not published (neutral score used) | 19 0.32 GPM per amp (9.5 A max) |
| Features 15% | 55 internal bypass, runs dry without damage, thermal protection | 30 runs dry without damage, strainer included |
| Warranty 15% | 33 2-year warranty | 33 2-year warranty |
Specifications
| PowerMax 3.0 GPM 55 psi RV Pump | Lippert Flow Max 3.0 GPM 12V | |
|---|---|---|
| Performance | ||
| Rated open flow | 3 GPM | 3 GPM |
| Shut-off pressure | 55 psi | 50 psi |
| Max current draw | - | 9.5 A |
| Price per GPM | $24.67 | $35.32 |
| Self-priming lift | 9 ft | - |
| Features | ||
| Control | Pressure switch | Pressure switch |
| Internal bypass | Yes | - |
| Runs dry | Yes | Yes |
| Thermal protection | Yes | - |
| Strainer included | - | Yes |
| Build | ||
| Weight | 4 lb | - |
| Warranty | 2 years | 2 years |