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 2.7. The PowerMax 3.0 GPM 55 psi RV Pump leads on value and features. The PowerMax 3.0 GPM 55 psi RV Pump costs $53.05 less ($74 vs $127.05).
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.
Shurflo Revolution 4008 3.0 GPM
#7 in Under 4 GPMFull review
The standard replacement pump for travel trailers and campers, with a 55 psi switch and a bypass for smoother flow. Buy it to replace a worn 4008 like for like.
Amazon $127.05$127.05
Which should you buy?
- Choose the PowerMax 3.0 GPM 55 psi RV Pump for value ($24.67 per GPM ($74, 3 GPM) vs $42.35 per GPM ($127.05, 3 GPM)) and features (internal bypass, runs dry without damage, thermal protection vs internal bypass, runs dry without damage).
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 | Shurflo Revolution 4008 3.0 GPM |
|---|---|---|
| Overall rating | 3.3/5 | 2.7/5 |
| Value 25% | 68 $24.67 per GPM ($74, 3 GPM) | 33 $42.35 per GPM ($127.05, 3 GPM) |
| Flow 20% | 25 3 GPM rated open flow | 25 3 GPM rated open flow |
| Pressure 15% | 71 55 psi shut-off | 71 55 psi shut-off |
| Efficiency 10% | 50 maximum current draw not published (neutral score used) | 43 0.40 GPM per amp (7.5 A max) |
| Features 15% | 55 internal bypass, runs dry without damage, thermal protection | 40 internal bypass, runs dry without damage |
| Warranty 15% | 33 2-year warranty | 0 warranty not published, scored as none |
Specifications
| PowerMax 3.0 GPM 55 psi RV Pump | Shurflo Revolution 4008 3.0 GPM | |
|---|---|---|
| Performance | ||
| Rated open flow | 3 GPM | 3 GPM |
| Shut-off pressure | 55 psi | 55 psi |
| Max current draw | - | 7.5 A |
| Price per GPM | $24.67 | $42.35 |
| Self-priming lift | 9 ft | - |
| Features | ||
| Control | Pressure switch | Pressure switch |
| Internal bypass | Yes | Yes |
| Runs dry | Yes | Yes |
| Thermal protection | Yes | - |
| Build | ||
| Weight | 4 lb | - |
| Warranty | 2 years | - |