JPR-YM07IP Aftermarket Yanmar 2GM/3GM Kinki Seawater Pump 128270-42002 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket JMP Yanmar 2GM/3GM Kinki-pattern seawater pump with pulley and bracket - Replacement Part Number: JPR-YM07IP

A Kinki-pattern bronze seawater pump for selected Yanmar 2GM and 3GM engines. It replaces Yanmar 128270-42002 and earlier 128270-42000/-42001 and is supplied with the drive pulley and mounting bracket.

⚙️ Key Features

• Kinki-pattern external belt-driven pump

• Bronze pump body with 1/4 BSPT ports

• Drive pulley and mounting bracket included

• JMP 7001-01 flexible impeller

• Major and minor service kits available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Yanmar 728270-42002 → Later service reference for 128270-42002

• Yanmar 128270-42002 → Supersedes 128270-42001 and 128270-42000

OEM / Related Numbers:

• JPR-YM07IP

• Yanmar 728270-42002

• Yanmar 128270-42002

• Yanmar 128270-42001

• Yanmar 128270-42000

• Impeller: JMP 7001-01

• Major service kit: JMP JSK0183

• Minor service kit: JMP JSM0183

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-YM07IP

Included Components:

• Complete seawater pump - Part Number: JPR-YM07IP

• Drive pulley - supplied fitted

• Mounting bracket - supplied

• Flexible impeller - Part Number: JMP 7001-01

🚤 Compatibility

Commonly used on:

• Flexible-impeller raw-water cooling systems

Typically suits:

• Engine models:

• Yanmar 2GML

• Yanmar 2GM20VE, 2GM20B and 2GM20C

• Yanmar 3GMD and 3GMLE

• Yanmar 3GM30VE, 3GM30B and 3GM30C

• HP Range: Engine-rating specific

• Engine Type: Yanmar GM-series two- or three-cylinder marine diesel

• Year Range: Model-specific; confirm the Kinki-pattern external pump and OEM 128270-42002

• Port Thread: 1/4 BSPT

• Impeller Reference: JMP 7001-01

🔌 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