Description

The Johnson Pump 09-1028BT-1 Impeller Kit is a complete raw water pump service kit designed for Johnson F7 and F7B series pumps used in marine cooling systems. This kit includes a precision-molded impeller along with sealing components to restore proper water flow and ensure reliable engine cooling.

Constructed from durable MC97 marine-grade neoprene/EPDM material, this impeller is engineered for maximum flow efficiency and long service life. Replacing a worn impeller helps maintain consistent cooling performance and protects your engine from overheating and damage.

This impeller is widely used in marine engines, generators, and auxiliary water pump systems, making it a critical maintenance item.

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Key Features

• Genuine Johnson Pump impeller kit
• MC97 marine-grade neoprene / EPDM construction
• 8-blade flexible impeller design
• Spline drive hub for secure fitment
• Designed for maximum water flow and durability
• Includes sealing components for full service

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Engine Compatibility

Johnson Pump Applications

Fits Johnson raw water pumps including:

• F7B series pumps
• F7 pump assemblies

Commonly used across marine engines, generators, and auxiliary pump systems

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Serial Number Fitment Notice

Fitment depends on:

• Pump model (F7 / F7B required)
• Shaft spline configuration
• Engine application

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

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Impeller Specifications

• Outer Diameter: 2.56″ (65 mm)
• Width: 1.98″ (50.2 mm)
• Shaft: 12-spline drive
• Blade Count: 8
• Material: MC97 neoprene / EPDM

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What’s Included in the Kit

• Impeller
• O-ring / gasket
• Installation lubricant (varies by kit)

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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
• Replace all included seals
• Inspect pump housing and wear surfaces
• Check for broken vane debris in cooling system

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Alternate / Superseded Part Numbers

OEM Cross References

• Johnson Pump: 09-1028BT-1
• Replaces: 09-1028B

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Cross References

• Jabsco: 17937-0001
• Sherwood: 18200
• Volvo Penta: 875593, 877061, 3841697, 21951356, 24139377

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Shipping

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

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Parts Desk Insight

This is one of the most common Johnson F7 impellers and crosses to a lot of Volvo and Jabsco numbers. The key detail is the spline hub and dimensions—if those match, you’re good