Protect Your Westerbeke Engine with Smarter Marine Maintenance

May 24, 2026

When it comes to marine maintenance, keeping your engine and generator cooling systems operating efficiently is essential for long-term reliability. A dependable seawater pump plays a major role in preventing overheating, maintaining proper water circulation, and protecting critical engine components from unnecessary wear.

The JPR-WB7108 JMP Marine Westerbeke Replacement Engine Cooling Seawater Pump is designed to provide consistent cooling performance for a wide range of Westerbeke and Universal engine applications. Whether you’re performing scheduled marine maintenance or replacing an aging OEM pump, the JPR-WB7108 delivers a durable, direct-fit solution built for dependable operation in demanding marine environments.

Designed to replace Westerbeke pump part numbers 42175 and 042175, as well as Universal 302648 and 302837 and Sherwood G908 and G903, this versatile pump simplifies maintenance while helping improve cooling system reliability.

Engineered for Marine Performance & Durability

Every component of the JPR-WB7108 is built with real-world marine maintenance needs in mind. Its compact yet rugged design supports dependable seawater circulation for both marine generators and engine systems.

Key features include:

• Strong full bronze body with heavy-duty marine-grade casting for corrosion resistance and long-term durability
• Marine-grade 3X series non-magnetic shaft designed for strength and wear resistance
• Long-life mechanical seal to help prevent leaks and maintain cooling efficiency
• High-performance flexible impeller (JMP 7172-01K) for consistent seawater flow
• Simple and compact design for easier installation and servicing

Weighing approximately 3.85 lbs (1.75 kg), the JPR-WB7108 is designed for dependable operation without adding unnecessary complexity to your cooling system setup.

Designed for Preventive Marine Maintenance

Preventive marine maintenance helps reduce unexpected downtime and costly repairs. The JPR-WB7108 supports that proactive approach with a service-friendly design that allows for easy replacement of spare parts and simplified routine maintenance.

The pump is compatible with:

• Major Service Kit (JSK0182) – complete internal components for full rebuilds
• Minor Service Kit (JSM0182) – ideal for routine servicing and maintenance

While the pump is not internally interchangeable with OEM components, JMP Marine has implemented internal design changes to improve quality and long-term performance compared to genuine factory pumps.

Reliable Cooling for Westerbeke & Universal Engines

The JPR-WB7108 is used on several popular marine generator and engine models, including:

• Westerbeke 17.0/23 EDE & 13.5/17.0 EDE
• Universal M-35, 35B/C, M-40B, M-25XPB, M3-20B, 5416, 5432, and 5444

Its universal-style design and direct replacement compatibility make it a practical solution for marine technicians and boat owners focused on efficient marine maintenance procedures.

Dependable Cooling for Everyday Marine Operation

From recreational vessels to generator-equipped cruising boats, reliable cooling system performance is essential for safe and efficient operation. By incorporating a high-quality seawater pump into your regular marine maintenance routine, you can help protect your engine, reduce downtime, and extend equipment life.

JMP MARINE… “THE ONLY ONE.”