Jabsco Par-Max Freshwater Pump — 12V, 2.0 GPM, with Bypass Module & Strainer (3129-535-123A)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Jabsco Par-Max Freshwater Pump — 12V, 2.0 GPM
A step up in flow from the entry-level Par-Max, with the same quiet, efficient design and a Quick Connect Strainer included in the box. The Jabsco Par-Max 3129-535-123A delivers 2.0 GPM on demand at 12V — enough for a single fixture with strong, consistent pressure, or light simultaneous demand from two fixtures. The integrated bypass module reduces pump cycling and smooths flow without a separate accumulator tank, the co-molded diaphragm is built for long service life, and the quick-connect ports make installation and routine servicing fast. Self-priming and run-dry safe, with vibration-dampening mounting feet for quiet operation.
Key Features
- 2.0 GPM flow rate at 12V DC — strong single-fixture pressure or light two-fixture use
- Integrated bypass module — reduces pump cycling and provides smoother flow without a separate accumulator tank
- Quick Connect Strainer included — protects pump from supply line debris
- Co-molded diaphragm technology for long service life and durability
- Integrated, sealed pressure switch for automatic on-demand operation
- Quick-connect ports for fast installation, servicing, and maintenance
- Vibration-dampening mounting feet for quiet operation
- Self-priming — flexible installation without manual priming
- Run-dry capable — no damage if the tank runs empty
Compatible Applications
- Single-fixture freshwater pressure systems requiring more flow than the 1 GPM model
- Light two-fixture installations on smaller powerboats and sailboats
- 12V DC freshwater systems where quiet operation and low power draw are priorities
- Installations where a strainer is required and quick-connect serviceability is preferred
Parts Desk Insights
The 2.0 GPM Par-Max is the mid-range entry in the standard Par-Max lineup — a good fit for boats with one strong-demand fixture or two light-use fixtures. The included Quick Connect Strainer is a practical addition that the 1 GPM model doesn’t include. For a single low-demand tap, the Jabsco Par-Max 1 GPM is the step-down option. For dedicated multi-fixture simultaneous supply, step up to the Jabsco Par-Max 3 GPM or the purpose-built Jabsco Par-Max 2X Multi-Outlet 2.3 GPM. For the heavy-duty series, the Par-Max HD 3 GPM, Par-Max HD 4 GPM, Par-Max HD 5 GPM, and Par-Max HD 6 GPM cover larger installations. Add a Jabsco Accumulator Tank downstream for even smoother pressure delivery.
Part Number: 3129-535-123A | Voltage: 12V DC | Flow Rate: 2.0 GPM | Ports: Quick-Connect | Includes: Bypass Module & Quick Connect Strainer
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
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.