Johnson Pump 12V Macerator Pump

The Johnson Pump TA3P10-19 is a 12-volt marine macerator pump designed to process toilet waste before pumping it from a marine sanitation system or holding tank. An internal rotary cutter breaks down waste and compatible toilet paper before the flexible nitrile impeller moves it through the discharge line. Delivers up to 10 GPM at 0.2 bar.

• 12V DC marine macerator pump model TA3P10-19
• 10 GPM / 37 L/min rated capacity at 0.2 bar
• Rotary cutter for breaking down toilet waste and tissue
• Nitrile flexible impeller (reference 09-1052S-9)
• Stainless-steel motor shaft; phenolic pump body
• Built-in motor thermal protection
• Ignition-protected motor ISO 8846 Marine compliant
• Mounting bracket designed to simplify replacement
• Inlet: 1-1/2″ hose or 1-1/2″ NPT | Outlet: 1″ hose
• Current draw: 15A max | Recommended fuse: 20A
• Self-priming; suitable for bowl or holding tank discharge
• Limited one-year manufacturer warranty

Technical Specifications

• Voltage: 12V DC
• Capacity: 10 GPM / 37 L/min at 0.2 bar
• Inlet: 1-1/2″ hose or 1-1/2″ NPT
• Outlet: 1″ hose
• Current draw: 15A | Fuse: 20A
• Impeller: Nitrile 09-1052S-9
• Shaft: Stainless steel | Seal: Lip seal
• Body: Phenolic plastic | Cutter housing: PET thermoplastic
• Dimensions: 10.08″ 4.70″ 3.35″ (256 119.5 85 mm)
• Weight: 4.2 lb / 1.9 kg
• Johnson Pump P/N: 10-24453-01 | Distributor SKU: 189-102445301
• UPC: 729321453011

Fitment Notice

Confirm the vessel uses a 12V DC system and that existing sanitation plumbing accepts a 1-1/2″ inlet and 1″ outlet. The 10-24453-02 is a 24V version and is not electrically interchangeable. BSP-thread variants are available under separate part numbers.

Installation Notes

Mount as close as practical to the holding-tank or bowl discharge outlet, below the outlet where possible. Use marine-grade stranded copper wiring, sealed terminals, and an ignition-protected 20A fuse near the power source. Support hoses so their weight is not carried by the pump. Use sanitation-rated hose and corrosion-resistant clamps. Only unbleached lavatory paper should enter the system wipes, paper towels, and foreign materials can jam the cutter.

Service Parts

Replacement nitrile impeller: 09-1052S-9. Confirm pump revision before ordering individual components.

Compatible Products

• Jabsco 12V Self-Priming Macerator Pump JAB-18590-2092 direct interchange alternative

Accessories & Related Products

• Johnson Pump 09-801B Impeller
• Johnson Pump 50533PK Nitrile Check Valve
• Johnson Pump Ultima Bilge Pump 12V