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
The Jabsco Par-Max HD6 and the Jabsco Par-Max HD5 are evenly matched, rated 3.4 and 3.4. The Jabsco Par-Max HD6 leads on flow. The Jabsco Par-Max HD5 wins on features and efficiency. The Jabsco Par-Max HD5 costs $37.64 less ($228.83 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 HD5
#6 in 4 GPM and upFull review
A heavy-duty 5 GPM, 60 psi pump for larger boats and motorhomes. Seaflo’s 55 Series gives more flow for half the price.
Amazon $228.83$228.83
Which should you buy?
- Choose the Jabsco Par-Max HD6 for flow (6 GPM rated open flow vs 5 GPM rated open flow).
- Choose the Jabsco Par-Max HD5 for features (runs dry without damage, thermal protection vs thermal protection) and efficiency (0.38 GPM per amp (13 A max) vs 0.33 GPM per amp (18 A max)).
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 | Jabsco Par-Max HD6 | Jabsco Par-Max HD5 |
|---|---|---|
| Overall rating | 3.4/5 | 3.4/5 |
| Value 25% | 30 $44.41 per GPM ($266.47, 6 GPM) | 28 $45.77 per GPM ($228.83, 5 GPM) |
| Flow 20% | 100 6 GPM rated open flow | 75 5 GPM rated open flow |
| Pressure 15% | 86 60 psi shut-off | 86 60 psi shut-off |
| Efficiency 10% | 24 0.33 GPM per amp (18 A max) | 38 0.38 GPM per amp (13 A max) |
| Features 15% | 15 thermal protection | 35 runs dry without damage, thermal protection |
| Warranty 15% | 67 3-year warranty | 67 3-year warranty |
Specifications
| Jabsco Par-Max HD6 | Jabsco Par-Max HD5 | |
|---|---|---|
| Performance | ||
| Rated open flow | 6 GPM | 5 GPM |
| Shut-off pressure | 60 psi | 60 psi |
| Max current draw | 18 A | 13 A |
| Price per GPM | $44.41 | $45.77 |
| Self-priming lift | 7 ft | 8 ft |
| Features | ||
| Control | Pressure switch | Pressure switch |
| Diaphragm chambers | 5 | 5 |
| Runs dry | - | Yes |
| Thermal protection | Yes | Yes |
| Build | ||
| Weight | 7 lb | 6.5 lb |
| Warranty | 3 years | 3 years |