Westerbeke 55624 Raw Water Pump – JMP Marine JPR-WB10IP
If your Westerbeke generator or engine is running hot or losing water flow, the culprit is often a tired raw water pump. The JPR-WB10IP is a direct replacement for the Westerbeke 55624 pump, built with a heavy-duty bronze body and a stainless-steel shaft so it can stand up to the demands of daily engine cooling without corroding or wearing out prematurely. It's designed as a drop-in swap, so there's no need to modify mounting brackets or plumbing to get your cooling system back online.
What makes this pump a smart long-term choice is its flexible impeller design paired with a long-life mechanical seal. It self-primes, moves fresh water, saltwater, and mild chemical solutions with ease, and keeps circulation steady even under continuous generator use. Owners who've dealt with leaking seals or cracked housings on the original equipment pump often find this replacement holds up noticeably longer in real-world marine conditions.
Beyond generator cooling, this same pump body shows up in a surprising number of other jobs. Boat owners use it for bilge pumping, deck washdown, and emptying holding tanks, while it also does double duty in industrial settings for tank drainage, liquid transfer, and handling fluids with light solids in suspension. It's a versatile, well-built pump that just happens to have started life as an engine cooling replacement part.
Key Features
- Direct replacement for Westerbeke 55624 (055624) raw water pump
- Heavy-duty bronze body built for marine-grade durability
- Stainless-steel shaft resists corrosion in wet environments
- Flexible impeller design with self-priming operation
- Long-life mechanical seal for reduced leak risk
- Compatible with fresh water, saltwater, and mild chemical solutions
Applications
- Raw water engine cooling on Westerbeke generators and engines
- Marine bilge pumping
- Deckwash and washdown systems
- Holding tank emptying
- Industrial liquid transfer and circulation
- Sump drainage and light solids-in-suspension handling
Specifications
- Part Number: JPR-WB10IP
- Replaces Westerbeke/Universal P/N: 55624, 055624, 42026, 042026, 46120, 046120
- Replaces Johnson Pump P/N: 10-24569-03, 10-24569-09
- Impeller: JMP 7000-01K
- Port Size: 3/8" NPT
- Body Material: Bronze
- Shaft Material: Stainless steel
- Seal Type: Mechanical seal
Frequently Asked Questions
Q: Will this pump fit my Westerbeke generator without modifications?
A: Yes, the JPR-WB10IP is designed as a direct bolt-in replacement for the Westerbeke 55624 pump, so existing mounting points and plumbing connections should line up without alteration.
Q: Can this pump handle saltwater use?
A: Yes, it's built to circulate both fresh water and saltwater, along with mild chemical solutions, making it suitable for coastal and offshore boats alike.
Q: Is priming required before startup?
A: No, the pump is self-priming thanks to its flexible impeller design, so it doesn't need to be manually filled before use.
Q: What should I avoid pumping with this unit?
A: Avoid gasoline, harsh solvents, and acids, as these can damage the impeller and seals over time.
Q: How can I extend the life of this pump?
A: Flushing the pump with fresh water after saltwater use helps prevent mineral buildup and corrosion, extending the service life of the impeller and seal.
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