Reliable Generator Cooling Starts with the JPR-NL08IH Raw Water Pump

July 8, 2026

When it comes to marine maintenance, keeping your generator's cooling system in peak condition is essential for reliable operation. A dependable raw water pump helps maintain proper seawater circulation, preventing overheating and protecting critical generator components from unnecessary wear. For vessels equipped with Northern Lights generators, choosing the right replacement pump can make all the difference in long-term performance.

The JPR-NL08IH JMP Marine Northern Lights Replacement Engine Cooling Raw Water Pump is engineered to provide reliable cooling for Northern Lights 6KW and under series generators. Whether you're performing routine marine maintenance or replacing a worn OEM pump, the JPR-NL08IH delivers a plug-and-play solution designed for durability, efficiency, and easy installation.

This pump replaces Northern Lights part number 25-12007 (including legacy part numbers NL145016820 and 25-18305) as well as Jabsco pump 30415-7001, making it a dependable replacement option for a wide range of generator models.

Engineered for Marine Performance & Long-Term Reliability

Every component of the JPR-NL08IH is designed with real-world marine maintenance in mind. Built using a strong bronze body with heavy-duty marine-grade casting, the pump offers excellent corrosion resistance and dependable performance in both freshwater and saltwater environments.

Key features include:

• Plug-and-play replacement for simplified installation

• Strong bronze body for maximum durability

• Marine-grade 3X series non-magnetic shaft for enhanced strength and corrosion resistance

• Long-life mechanical seal, replacing traditional lip seals for improved reliability

• High-performance flexible impeller (JMP 7070-01K) for efficient seawater circulation

• Integrated cam designed for improved performance and easier replacement of spare parts

• O-ring end cover seal instead of a conventional gasket for a more secure, leak-resistant seal

Compact in size at 110mm x 117mm x 81mm and weighing approximately 3.30 lbs (1.50 kg), the JPR-NL08IH is built to fit seamlessly into existing generator cooling systems.

Designed for Preventive Marine Maintenance

A proactive marine maintenance schedule helps prevent unexpected breakdowns and extends the life of your generator. The JPR-NL08IH supports this approach with upgraded internal components designed to improve performance beyond the original equipment.

JMP Marine has enhanced several internal features, including the integrated cam, shaft, mechanical seal, oil seal, and O-ring cover design to deliver greater durability and longer service life.

For continued maintenance, the pump is compatible with:

• Major Service Kit JSK0081 – complete internal rebuild components

• Minor Service Kit JSM0088 – ideal for routine servicing and preventive maintenance

Reliable Cooling for Northern Lights Generators

The JPR-NL08IH is compatible with numerous Northern Lights 6KW and under generator models, including the M643, M673, NL643, NL673, and several additional configurations. Its direct-fit design allows marine technicians and boat owners to complete replacements quickly while maintaining dependable cooling performance.

By incorporating a high-quality raw water pump into your regular marine maintenance routine, you can improve cooling efficiency, reduce the risk of overheating, minimize downtime, and help extend the life of your onboard generator.

JMP MARINE… “THE ONLY ONE.”