Sherwood 09959K Neoprene Impeller Service Kit – PCM Marine Engines

Keep your boat's cooling system running efficiently with the Sherwood 09959K Neoprene Impeller Service Kit, designed for select PCM GM 350, 454, and 8.1L marine engines through 2004. This replacement raw water pump impeller helps maintain proper cooling water circulation, reducing the risk of engine overheating and costly repairs.

Commonly used on PCM crank-driven V-belt water pumps, including select PCM Excalibur and 5.0L Sport engines, this Sherwood impeller features durable neoprene construction for dependable marine cooling performance. The service kit includes a replacement impeller, O-ring, and five paper gaskets for servicing compatible raw water pumps.

Key Features:

• Replacement Sherwood impeller service kit for select PCM marine engines
• Compatible with GM 350, 454, and 8.1L PCM engine applications
• Designed for compatible crank-driven V-belt water pumps
• Fits select PCM Excalibur and 5.0L Sport engines
• Neoprene impeller construction for marine engine cooling
• Includes O-ring and five paper gaskets
• Replaces multiple older Sherwood impeller part numbers

Product Specifications:

• Manufacturer: Sherwood
• Part Number: 09959K
• Product Type: Marine Raw Water Pump Impeller Service Kit
• Impeller Material: Neoprene
• Impeller Diameter: 2-7/16"
• Impeller Height: 1-1/4"
• Compatible Engines: Select PCM GM 350, 454, 8.1L, Excalibur, and 5.0L Sport
• Pump Application: Compatible Crank-Driven V-Belt Water Pumps
• Replacement Part Numbers: Sherwood 09959, 10685, 10687, 11422, 18656

Kit Includes:

• 1 Replacement Neoprene Impeller
• 1 O-Ring Seal
• 5 Paper Gaskets

Important Fitment Note: This impeller kit DOES NOT fit 2004 and newer PCM serpentine-belt water pumps. Verify your engine model, pump configuration, and existing impeller dimensions before ordering. Engine model year alone does not guarantee compatibility.

Maintenance Recommendation: Replace your impeller every 100 operating hours or every other spring, whichever comes first, according to the supplied service guidance. Keeping a spare impeller onboard is recommended.

For additional compatibility information, visit the Bakes Marine Technical Resource Library for PCM service parts reference materials.