Description

The Sherwood 15000K Impeller Kit is a complete raw water pump service kit designed to maintain proper cooling system performance in marine engines equipped with Sherwood 15000 series pump assemblies. This kit includes a precision-molded neoprene impeller along with sealing components and hardware to ensure reliable water flow and long service life.

The impeller is responsible for circulating seawater through the engine cooling system. Over time, the flexible vanes can wear, harden, or crack, reducing efficiency and increasing the risk of overheating. Replacing the impeller at recommended intervals helps restore cooling performance and protect your engine from damage.

This kit is commonly used across mid-range marine diesel and gasoline engines, making it a key maintenance item for dependable operation.

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Key Features

• Genuine Sherwood impeller service kit
• Marine-grade neoprene rubber construction
• Flexible multi-blade impeller design
• Brass hub with keyed drive
• Includes gasket, O-ring, and hardware
• OEM-spec fit and performance

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Engine Compatibility

Caterpillar Marine Engines

• CAT 3114
• CAT 3116 (select configurations)

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Cummins Marine Engines

• Cummins 6BT / 6BTA (select pump setups)
• Cummins 4BT applications

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Ford Lehman Diesel

• Lehman 120
• Lehman 135

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Chrysler / GM Marine Engines

• Various inboard gasoline engines using Sherwood pumps

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Other Diesel Applications

• Perkins diesel engines (select models)
• Westerbeke diesel engines (select models)

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Sherwood Pump Compatibility (Primary Fitment)

Fits Sherwood 15000 series pumps, including:

• P1501
• P1502
• P1503
• P1504
• P1505
• P1506
• P1507
• P1508

Designed specifically for Sherwood 15000-series pump systems

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Serial Number Fitment Notice

Fitment depends on:

• Pump model (15000 series required)
• Shaft configuration (keyed)
• Engine application

Always confirm compatibility using your pump model or engine serial number before ordering.

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Impeller Specifications (Fitment Critical)

• Diameter: 3″ (76 mm)
• Width: 2.5″ (63 mm)
• Shaft: Keyed shaft (3/4″)
• Blade Count: 10–12 blades
• Material: Marine-grade neoprene

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What’s Included in the Kit

• Impeller
• Pump cover gasket
• O-ring
• Key / hardware (varies by version)

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When This Part Needs Replacement

Replace the impeller if you notice:

• Reduced or no cooling water flow
• Engine overheating
• Cracked, missing, or stiff vanes
• Reduced performance under load

Recommended service interval: every 100 hours or annually

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Installation Notes

• Lubricate impeller before installation
• Install with correct vane direction
• Ensure key is properly seated
• Replace all seals and gaskets
• Inspect pump housing and wear surfaces

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Alternate / Superseded Part Numbers

OEM Cross References

• Sherwood: 15000K

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Cross References

• Jabsco: Equivalent applications (verify)
• Johnson Pump: F6/F8 series equivalents (verify)

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Aftermarket Cross References

• JMP: 7500-01K (verify fitment)

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Shipping

Shipping: Ships same or next day for fast Canada wide shipping.

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Parts Desk Insight

The 15000K is one of those “in-between” Sherwood impellers—bigger than 10615K but smaller than 17000K. The key identifier is the 3/4″ keyed shaft, which is where most ordering mistakes happen