JPR-NL10IP02 Aftermarket Northern Lights M864/M964/M984 Seawater Pump | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket JMP Northern Lights M864/M964/M984 seawater pump - Correct JMP Part Number: JPR-NL10IP2

A replacement bronze seawater pump for Northern Lights M864, M964 and M984 generator engines using OEM pump 25-15405. The catalogued JMP code is JPR-NL10IP2; JPR-NL10IP02 is a title-format variation and should not be confused with JPR-NL10IP for the M753/M773/M843/M844 family.

⚙️ 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:

• Northern Lights 25-15405 (OEM pump reference)

• JPR-NL10IP2 (correct JMP catalogue code)

OEM / Related Numbers:

• JPR-NL10IP2

• JPR-NL10IP02

• Northern Lights 25-15405

Aftermarket / Verified Equivalents:

• JMP Marine: JPR-NL10IP2

🚤 Compatibility

Commonly used on:

• Flexible-impeller raw-water cooling systems

Typically suits:

• Engine models:

• Northern Lights M864K, M864W and M864W3

• Northern Lights M964

• Northern Lights M984K and M984W

• HP Range: Generator-engine rating specific

• Engine Type: Northern Lights marine diesel generator engine

• Year Range: Model-specific; confirm OEM pump 25-15405

• Catalogue Correction: Use JMP code JPR-NL10IP2

• Application Note: Does not replace JPR-NL10IP / Northern Lights 25-12057

🔌 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