Jabsco Macerator Self Priming, Waste Evacuation Pump (12v/24v)


The ideal solution for emptying marine or RV holding tanks when pumping maceration is necessary to pump out sediment. It is recommended that holding tanks be flushed with several gallons of water after each pump out. Link to maintenance kit included in main product description.

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The DC Jabsco 18590 Series macerator waste pump for emptying RV and marine holding tanks is also suitable for emptying fish box and livewell receptacles. It is self-priming to 5 feet and will empty a typical 30 gallon (115 Liter) holding tank in less than 3 minutes.

The duty cycle of pump is 15 minutes continuous which means a 180 gallon (680 liter) tank can be emptied in a single operation.

It includes Run-Dry Protection Device that shuts-off pump and a permanent magnet type motor, fully enclosed with stainless steel shaft.

Repair and Maintenance Kit


Contains body, impeller, 2 gaskets and seal. Stainless Steel Bolt Kit – 17288-1000 – must be purchased SEPARATELY. For macerators January 2015 onwards. Click here to purchase.

Stainless Steel Bolt Kit for Older 18590 Series Macerator Pumps. Replaces bronze studs and acorn nuts. Click here to purchase.

Essential that you purchase this kit with a new macerator as it will be needed within 18-36 months. Regular maintenance is necessary on ALL brands of RV and boat macerators, not just Jabsco’s.

Jabsco 18590 Series Macerator Service Kit Instructions

Jabsco Macerator Blown Fuse Diagnosis

Jabsco 18590 Series Macerator – Reorientation of the Discharge

Guest contributor, Jim Bounds, recently featured this product in a video aimed at the RV owners who want to ditch their “stinky slinkies” and switch to a more hygenic and convenient macerator setup.


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