PARMAX HD4 12V 4GPM 40PSI PUMP
No restocking fees on eligible returns
You have 30 days to request a return. All sale items are final sale.
Customer pays return postage. Return postage is reimbursed if we made a mistake.
Water System Pumps
Parmax HD4 12V 4GPM 40PSI Pump
Updated and improved lineup of freshwater supply pumps. The standard models available from 1-3 GPM provide good performance in an economical footprint, with a plastic housing that protects the motors from corrosion.
The HD (heavy duty) models available up to 6 GPM and 60 PSI deliver exceptional performance, and include a wider diameter motor with a powder coated shell, cast aluminum endbells, and lower housing to improve pressure capability and life.
- Co-molded diaphragm technology for long life and durability
- HD models feature heavy duty motors and cast aluminum lower housings, which allow for long life, even at high pressures
- Efficient and quiet operation
- Integrated, sealed pressure switch for on-demand operation
- Self-priming
- Can run dry without damage
- Quick connect ports for ease of installation, servicing, and maintenance
- Vibration dampening mounting feet
- Integrated bypass module to reduce cycling and provide smoother flow
- Brand: Jabsco
- Manufacturer part #: Q401J-115S-3A
- Sold as: EA (pack of 4)
Model Details
12V DC freshwater pressure pump with 4 GPM open flow and a 40 PSI shut-off setting.
Parts Desk Insight
Select by voltage and shut-off pressure, not just the HD4 name. The 40 PSI rating is the pressure-switch stop setting, not a promise of 4 GPM delivery at that pressure.
Shipping information
In-stock and OEM parts: ship same or next business day.
Supplier-stock items are usually ready for pickup or shipping within 24 hours of ordering.
Special-order timing may vary.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.