Jabsco Replacement Pressure Switch Kit for Par-Max Water Pumps (37121-0010)
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Jabsco Replacement Pressure Switch Kit for Par-Max Water Pumps
Restore automatic on-demand operation to your Jabsco Par-Max freshwater pump. The Jabsco 37121-0010 is the genuine replacement pressure switch kit for the Par-Max water pump series — the component that tells the pump when to start and stop based on system pressure. When the switch fails, the pump either runs continuously or won’t activate at all; replacing it is a straightforward repair that brings the system back to proper automatic operation without replacing the entire pump.
Key Features
- Genuine Jabsco replacement pressure switch kit for Par-Max water pumps
- Restores automatic on-demand pump operation
- Activates pump when system pressure drops, shuts off when pressure is restored
- Direct replacement for the factory pressure switch on compatible Par-Max models
- Kit includes all components needed for a complete switch replacement
Compatible Applications
- Jabsco Par-Max water system pumps requiring pressure switch replacement
- Par-Max pump systems where the pump runs continuously or fails to activate
- Any compatible Jabsco Par-Max model requiring the 37121-0010 pressure switch
Parts Desk Insights
A failed pressure switch is one of the most common Par-Max pump service issues — symptoms include the pump running non-stop even when no tap is open, or the pump not activating when a tap is turned on. If your pump motor is still working but the automatic operation has failed, this switch kit is the correct first repair to try before replacing the pump. Compatible Par-Max pumps in the catalog include the Jabsco Par-Max 1 GPM, Jabsco Par-Max 2 GPM, Jabsco Par-Max 3 GPM, and the Jabsco Par-Max 2X Multi-Outlet 2.3 GPM. For the heavy-duty Par-Max series, confirm compatibility with your specific model before ordering.
Part Number: 37121-0010 | Type: Replacement Pressure Switch Kit | Fits: Jabsco Par-Max Water System Pumps
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.