Sherwood G-55-2 Complete Bronze Raw Water Pump — Engine-Tested Cooling for Pleasurecraft 454
The Sherwood G-55-2 is a complete, ready-to-install raw water pump built for Pleasurecraft GM Chevy 350 and 454 cubic inch V-8 engines, directly replacing OEM part number RA057009. This is a full pump assembly — not a pump end — arriving with everything needed for installation, including the bronze pump body, high-chrome nickel stainless steel slotted drive shaft, machined-in cam, dual seals, flange mount, and neoprene flexible impeller. The belt-driven design keeps the pump tightly integrated with the engine's accessory drive system, making it a clean, reliable fit for Pleasurecraft Marine applications. Built by Sherwood, now part of Pentair, this pump carries a legacy of engine-specified, engine-tested performance stretching back to the earliest days of inboard marine engine cooling.
What sets the G-55-2 apart from generic alternatives is its combination of construction quality and versatile pumping capability. The flexible neoprene impeller brings together the self-priming strength of a positive displacement pump with the smooth, pulsation-free delivery of a centrifugal — and the single moving part design means there are no gears to jam, no metal-to-metal contact to cause noise or wear, and no air-lock vulnerability when air passes through the system. With a suction lift of up to 15 feet when fully primed, the pump performs reliably at both low and high speeds. Beyond engine cooling, this complete pump assembly is well suited for bilge pumping, deck wash, holding tank drainage, and industrial liquid transfer — anywhere a durable, self-priming bronze pump is the right tool for the job.
Key Features
- Complete pump assembly — ready to install, includes all core components
- Belt-driven design integrated with engine accessory drive
- Single moving part — no gears, no metal-to-metal pumping contact
- Self-priming at low and high speeds; suction lift up to 15 feet when fully primed
- Will not air-lock — continues operating when air passes through the system
- Smooth, even, pulsation-free flow delivery
- Two independent seals — one on the main pump body, one at the flange mount
- Convenient drain plug for easy maintenance and winterization
- Machined-in cam for precise, consistent impeller actuation
- Flange mounting with vertical in and out port orientation
- Corrosion-resistant bronze body with high-chrome nickel stainless steel slotted drive shaft
- Fully serviceable and rebuildable — restore to near-new condition without full replacement
Applications
- Primary engine cooling for Pleasurecraft GM 454 and 350 cu. in. V-8 engines
- Bilge pumping
- Deck wash and washdown systems
- Emptying and transferring from holding tanks
- Industrial liquid circulation and transfer
- Tank and sump drainage
- Handling liquids with solids in suspension
- Compatible with fresh water, salt water, and mild chemical solutions
- Not suitable for gasoline, severe solvents, or acids
Specifications
- Part Number: G-55-2 (also referenced as G55-2)
- Replaces OEM Part: Pleasurecraft RA057009
- Assembly Type: Complete pump assembly
- Drive Type: Belt-driven
- Body Material: Marine-grade bronze
- Drive Shaft Material: High-chrome nickel stainless steel (slotted)
- Impeller Material: Neoprene (flexible)
- Replacement Impeller Kit: 10615K
- Minor Repair Kit: 23976
- Major Repair Kit: 23977
- Inlet Port Size: 1-1/4 inch
- Outlet Port Size: 1-1/4 inch
- Port Orientation: Vertical in and out
- Mounting Style: Flange mount
- Maximum Pressure: 20–30 PSI
- Operating Temperature Range (Neoprene): 45°F to 180°F (7°C to 82°C)
- Cam Type: Machined-in
- Number of Seals: 2 (main pump body + flange mount)
- Impeller Dimensions (Kit 10615K): 1-5/8" wide × 2-9/16" diameter, 12 blades, keyed
Frequently Asked Questions
Q: Which engines does the Sherwood G-55-2 fit?
This pump is engine-specified and engine-tested for Pleasurecraft Marine GM Chevy 350 and 454 cubic inch V-8 engines. It is a direct replacement for Pleasurecraft OEM part number RA057009.
Q: What happens if the pump operates without fluid?
Running the pump dry causes rapid wear and failure of the neoprene impeller due to friction without lubrication. The pump must always be primed with liquid before start-up, and suction lines must be fully airtight for the self-priming function to work correctly.
Q: Can this pump be rebuilt instead of replaced when it wears out?
Yes. Sherwood engineers this pump series for full serviceability. A Minor Repair Kit (23976) and a Major Repair Kit (23977) are available to restore the pump — replacing worn seals, impeller, and internal components — without purchasing an entirely new assembly. These Kits Are Shown Below.
Q: Is this pump suitable for applications outside of engine cooling?
Yes. While it is designed and specified for Pleasurecraft 454 engine cooling, the G-55-2 complete pump assembly is also used for bilge pumping, deck washdown, holding tank transfer, industrial liquid circulation, sump drainage, and handling liquids containing solids in suspension. Its self-priming capability and corrosion-resistant bronze construction make it a practical choice across a range of fluid-handling tasks.
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