Sherwood R50G Bronze Raw Water Engine Cooling Pump
The Sherwood R50G is a general-purpose engine cooling pump designed to circulate raw water through a marine engine's cooling system, protecting the engine from overheating during operation. Built with a durable bronze housing and a stainless steel shaft, this pump is engineered to handle continuous duty in demanding marine environments while resisting the corrosive effects of saltwater and freshwater alike. Its flexible impeller design draws water efficiently through the system, and the pump's construction, featuring sealed ball bearings and a mechanical seal, is intended to keep maintenance needs low over years of service.
What makes the R50G a popular choice among boat owners and marine technicians is its flexibility as a universal replacement pump. Rather than being locked to a single engine manufacturer, it fits a wide variety of marine diesel and gasoline engine applications, making it a practical option for anyone looking to replace an aging or failing cooling pump without hunting down an engine-specific part. The vertical, parallel 3/4" FPT inlet and outlet ports simplify plumbing connections, and the pump's flow performance, reaching close to 19.5 gallons per minute at higher RPM, ensures adequate cooling capacity for most mid-size marine engines.
For owners who want a dependable, long-lasting cooling pump backed by a well-established name in marine pump manufacturing, the Sherwood R50G offers a straightforward, no-nonsense solution. Whether it's a scheduled maintenance swap or an emergency replacement after impeller failure, this pump is built to get an engine's cooling system back to full working order quickly and reliably.
Key Features:
- Durable bronze pump housing for long-term corrosion resistance
- Stainless steel, non-magnetic 5/8" flat-end shaft
- Flexible impeller design for efficient raw water intake
- Sealed ball bearings paired with a carbon bushing for smooth, low-maintenance operation
- Mechanical seal construction to reduce leak points
- Vertical, parallel port orientation for simplified plumbing installation
- Compatible with standard Sherwood service and repair kits
Applications:
- Marine diesel engine raw water cooling systems
- Marine gasoline engine raw water cooling systems
- General-purpose engine cooling pump replacement across multiple engine brands
- Commercial and recreational vessel engine cooling
- Replacement pump for aging or worn OEM cooling pumps
Specifications:
- Model: R50G
- Brand: Sherwood
- Port size: 3/4" FPT (inlet and outlet)
- Port orientation: Vertical, parallel
- Shaft diameter: 5/8"
- Shaft drive type: Flat end
- Housing material: Bronze
- Shaft material: Stainless steel
- Bearing type: Sealed ball bearing with carbon bushing
- Seal type: Mechanical seal
- Flow rate: Up to approximately 19.5 GPM at 3000 RPM (10 PSI)
- Compatible impeller kit: 09959K
- Compatible minor repair kit: 10997
- Compatible major repair kit: 12937
Frequently Asked Questions
Q: What engines is the Sherwood R50G pump compatible with?
The R50G is a general-purpose cooling pump not tied to a specific engine manufacturer, so it fits a wide range of marine diesel and gasoline engines that use a compatible 3/4" FPT port raw water pump configuration.
Q: How do I know when the impeller in my R50G pump needs replacing?
Common signs include reduced raw water flow, engine overheating, or unusual noise from the pump. Inspecting the impeller during routine maintenance, or after any suspected dry-running event, helps catch wear before it causes engine damage.
Q: Can the R50G pump be rebuilt instead of replaced?
Yes, the R50G is compatible with Sherwood's minor repair kit (10997) and major repair kit (12937), which allow technicians to rebuild the pump rather than replace the entire unit.
Q: What is the port configuration on the R50G pump?
The R50G has vertical, parallel 3/4" FPT inlet and outlet ports, designed for straightforward integration into existing raw water plumbing runs.
Q: Is the Sherwood R50G suitable for both saltwater and freshwater use?
Yes, the bronze housing and stainless steel shaft are built to resist corrosion in both saltwater and freshwater marine cooling applications.
CLRMarine
