Seaflo 55 Series 5.5 GPM 60 psi
#2 in 4 GPM and upFull review
A lot of flow and pressure for the money, for big rigs and boats with several fixtures. Check that the wiring can carry its 17 A draw.
Amazon $110.86$110.86
The Seaflo 55 Series 5.5 GPM 60 psi is the better RV water pump overall, rated 4.1 to 3.4. The Seaflo 55 Series 5.5 GPM 60 psi leads on value, features and warranty. The Jabsco Par-Max HD6 wins on flow. The Seaflo 55 Series 5.5 GPM 60 psi costs $155.61 less ($110.86 vs $266.47).
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.
Jabsco Par-Max HD6
#4 in 4 GPM and upFull review
The highest-flow pump here, 6 GPM at 60 psi, for big boats and multi-bath motorhomes that can feed its 18 A draw.
Amazon $266.47$266.47
Which should you buy?
- Choose the Seaflo 55 Series 5.5 GPM 60 psi for value ($20.16 per GPM ($110.86, 5.5 GPM) vs $44.41 per GPM ($266.47, 6 GPM)), features (internal bypass, runs dry without damage, strainer included vs thermal protection) and warranty (4-year warranty vs 3-year warranty).
- Choose the Jabsco Par-Max HD6 for flow (6 GPM rated open flow vs 5.5 GPM rated open flow).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 4 GPM and up RV water pump; a clear win is highlighted. How we rank explains each one.
| Factor weight | Seaflo 55 Series 5.5 GPM 60 psi | Jabsco Par-Max HD6 |
|---|---|---|
| Overall rating | 4.1/5 | 3.4/5 |
| Value 25% | 81 $20.16 per GPM ($110.86, 5.5 GPM) | 30 $44.41 per GPM ($266.47, 6 GPM) |
| Flow 20% | 88 5.5 GPM rated open flow | 100 6 GPM rated open flow |
| Pressure 15% | 86 60 psi shut-off | 86 60 psi shut-off |
| Efficiency 10% | 21 0.32 GPM per amp (17 A max) | 24 0.33 GPM per amp (18 A max) |
| Features 15% | 50 internal bypass, runs dry without damage, strainer included | 15 thermal protection |
| Warranty 15% | 100 4-year warranty | 67 3-year warranty |
Specifications
| Seaflo 55 Series 5.5 GPM 60 psi | Jabsco Par-Max HD6 | |
|---|---|---|
| Performance | ||
| Rated open flow | 5.5 GPM | 6 GPM |
| Shut-off pressure | 60 psi | 60 psi |
| Max current draw | 17 A | 18 A |
| Price per GPM | $20.16 | $44.41 |
| Self-priming lift | 9 ft | 7 ft |
| Features | ||
| Control | Pressure switch | Pressure switch |
| Diaphragm chambers | 5 | 5 |
| Internal bypass | Yes | - |
| Runs dry | Yes | - |
| Thermal protection | - | Yes |
| Strainer included | Yes | - |
| Build | ||
| Weight | - | 7 lb |
| Warranty | 4 years | 3 years |