Jabsco 12V Self-Priming Macerator Pump JAB-18590-2092
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Jabsco 18590-2092 is a genuine 12V self-priming marine macerator pump designed for waste evacuation, fish box drainage, and livewell tank evacuation. Current Jabsco/Xylem documentation identifies it as part of the 18590 series, with a 4-blade stainless steel cutter, run-dry protection, and a fully enclosed permanent-magnet motor built for marine sanitation service.
Key Features
- Genuine Jabsco OEM part number 18590-2092.
- 12V DC macerator pump with output up to 12.5 GPM / 47 LPM at zero head.
- Self-priming to 5 ft when wet and 4 ft when dry.
- 4-blade stainless steel cutter reduces particle size to 1/8 in. (3 mm) max.
- Inlet: 1-1/2 in. (38 mm) hose barb plus 1-1/2 in. male NPT; Outlet: 1 in. (25 mm) hose barb.
- Run-dry protection and ignition protection compliance to USCG 183.410 and ISO 8846 MARINE.
- Approximate dimensions are 11-3/8 to 11-9/16 in. long, about 4-3/4 in. wide, 3-5/8 in. high, with weight around 5 lb / 2.2-2.3 kg.
Engine Compatibility
This is not an engine-specific part. The 18590-2092 is selected by sanitation-system layout, tank-evacuation needs, voltage, hose sizing, and installation space rather than by engine make or model. Current Jabsco/Xylem materials position it for marine holding tanks, fish boxes, and livewell evacuation where a 12V macerator pump is required.
Serial Number Fitment Notice
Match this pump by system requirements rather than engine serial number. The key checks are 12V electrical supply, 1-1/2 in. inlet plumbing, 1 in. discharge hose, allowable duty cycle, and whether the installation calls for a macerator-style waste pump with self-priming capability.
When This Part Needs Replacement
Replace the pump when flow drops off, the cutter or impeller is worn, the motor no longer runs reliably, the pump begins blowing fuses due to internal wear, or the housing and seals have deteriorated from service. Jabsco's current service support for the 18590 series also points to rebuild/service-kit maintenance when the pump is no longer performing as expected.
Installation Notes
Install 18590-2092 only in the correct marine waste or evacuation system and follow Jabsco's installation guidance. Current OEM documentation states the pump may be mounted in any orientation, though vertical mounting is recommended with the pump head below the motor, and it also notes a 15-minute continuous duty cycle, meaning up to about 180 gallons can be emptied in a single operation. Jabsco also cautions against running the pump dry for more than 30 seconds.
Alternate/Superseded Part Numbers
Current OEM sources show 18590-2092 as the active 12V model in the Jabsco 18590 series. Related references include the 24V version 18590-2094 and the 18598-1000 service kit for 18590-series pump servicing.
Parts Desk Insight
The important match on this pump is usually the system layout and plumbing size, not just the 12V label. On boats with holding tanks, fish boxes, or livewells, confirming the 1-1/2 in. inlet, 1 in. discharge, self-priming requirement, and duty cycle usually saves more trouble than comparing pumps by appearance alone.
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Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.
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