JPR-ME5000A Aftermarket Mitsubishi S6A3 Engine-Cooling Seawater Pump with Drive Gear | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket JMP Mitsubishi S6A3 seawater pump with drive gear - Replacement Part Number: JPR-ME5000A

A complete engine-cooling seawater pump for Mitsubishi S6A3 marine diesel engines. It is supplied with the S6A3 drive gear and uses the JMP IMP0062 flexible impeller. This pump is distinct from JPR-ME5000R, which carries the S6R/S6R2 gear.

⚙️ Key Features

• Heavy-duty marine bronze pump body

• Flexible-impeller positive-displacement design

• Marine-grade non-magnetic stainless-steel shaft

• Replaceable mechanical seal, bearings, cam and wear components

• Designed to match the listed OEM mounting, rotation and connection layout

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• JPR-ME5000A (complete S6A3 pump and gear assembly)

• Drive gear GEA0010 → Replaces Mitsubishi 42763-00200

OEM / Related Numbers:

• JPR-ME5000A

• Mitsubishi S6A3 pump family

• Drive gear: JMP GEA0010 / Mitsubishi 42763-00200

• Impeller: JMP IMP0062

• Major service kit: JMP JSK0109

• Minor service kit: JMP JSM0109

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-ME5000A

Included Components:

• Complete seawater pump - Part Number: JPR-ME5000A

• Drive gear - Part Number: JMP GEA0010 / Mitsubishi 42763-00200

• Flexible impeller - Part Number: JMP IMP0062

🚤 Compatibility

Commonly used on:

• Flexible-impeller raw-water cooling systems

Typically suits:

• Engine models:

• Mitsubishi S6A3 marine diesel engines using drive gear 42763-00200

• HP Range: Engine-rating specific

• Engine Type: Gear-driven Mitsubishi S6A3 inline-six marine diesel

• Year Range: Model-specific; confirm the original gear number is 42763-00200

• Seawater Connections: 2 in NPT

• Impeller Reference: JMP IMP0062

• Drive Gear: JMP GEA0010 / Mitsubishi 42763-00200

🔌 Function

The seawater pump draws raw water through the intake and circulates it through the engine, heat exchanger, oil cooler, aftercooler and wet-exhaust circuit as applicable. Its flexible impeller must maintain adequate flow from idle through full load while the shaft, bearings and mechanical seal keep the drive and water sections correctly supported and separated.

Common signs of failure:

• Engine temperature rises under load or at higher RPM

• Reduced or intermittent water discharge from the exhaust

• Missing, cracked, swollen or permanently set impeller vanes

• Seawater leakage or salt tracks from the shaft seal or weep area

• Bearing noise, pulley or gear wobble, or excessive shaft movement

• Scored cover plate, worn cam or damaged pump housing reduces suction

• Internal corrosion, air leakage or blocked inlet passages cause loss of prime

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging