JPR-YM06LP(A) Aftermarket Yanmar 6LP/6LPA-STP2 Seawater Pump with Ports 119773-42502 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket JMP Yanmar 6LP/6LPA ported seawater pump - Correct JMP Part Number: JPR-YM06LPA

The ported seawater-pump configuration for Yanmar 6LP and 6LPA straight-drive engines. It replaces Yanmar 119773-42502 and earlier 119773-42500/-42501/-42650 and cross-references to Johnson 10-24493-02. It is distinct from geared pump JPR-YM06LPB.

⚙️ Key Features

• Bronze pump body with integral external ports

• Designed for straight-drive 6LP/6LPA configurations

• Flexible-impeller positive-displacement design

• Major and minor service kits available

• Direct replacement for Yanmar 119773-42502

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Yanmar 119773-42502 → Later replacement for 119773-42501, 119773-42500 and 119773-42650 on specified ported applications

• Johnson 10-24493-02 is the original pump cross-reference

OEM / Related Numbers:

• JPR-YM06LPA

• JPR-YM06LP(A)

• Yanmar 119773-42502

• Yanmar 119773-42501

• Yanmar 119773-42500

• Yanmar 119773-42650

• Johnson 10-24493-02

• Major service kit: JMP JSK0129

• Minor service kit: JMP JSM0129

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-YM06LPA

Important Fitment Notes:

• The catalogued JMP code is JPR-YM06LPA. Do not substitute JPR-YM06LPB, which uses the 119773-42652 geared configuration.

🚤 Compatibility

Commonly used on:

• Flexible-impeller raw-water cooling systems

Typically suits:

• Engine models:

• Yanmar 6LP-DTE and 6LP-DTEP

• Yanmar 6LP-STE and 6LP-STEP

• Yanmar 6LPA-DTE and 6LPA-DTEP

• Yanmar 6LPA-STE and 6LPA-STEP

• Yanmar 6LPA-STP2

• HP Range: Engine-rating specific; commonly approximately 250HP-315HP

• Engine Type: Yanmar 6LP/6LPA inline-six marine diesel

• Year Range: Model-specific; confirm OEM pump 119773-42502 and ported housing

• Pump Configuration: Ported body

• Original Pump Cross-Reference: Johnson 10-24493-02

🔌 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