Description

The Johnson Pump 09-808B-1 Impeller Kit is a complete raw water pump service kit designed for Johnson F35 series pumps used in marine engine cooling systems. This kit includes a precision-molded MC97 neoprene impeller along with sealing components to restore proper water flow and ensure reliable cooling performance.

Built with a durable marine-grade neoprene compound and a brass hub with a slotted pin-drive shaft, this impeller provides excellent flexibility, long service life, and dependable operation in both freshwater and saltwater environments.

This is a widely used small-frame impeller, commonly found in Volvo Penta saildrives, Westerbeke engines, and compact diesel systems.

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Key Features

• Genuine Johnson Pump impeller kit
• MC97 marine-grade neoprene / EPDM construction
• 6-blade flexible impeller design
• Brass hub with slotted pin-drive shaft
• Designed for maximum flow and durability
• Includes gasket and O-ring (kit version dependent)

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Engine Compatibility

Volvo Penta Marine Engines

Common applications include:

• 120S saildrive series
• 2001 / 2002 / 2003 series
• MD series (MD1, MD2, MD3, MD5, MD6, MD7, MD11, MD17)

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Westerbeke Marine Engines

• BEG / SBEG
• WMD
• BCD / BCDT
• BCGA / SBCG / BCGC / BCGB

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Universal Marine Engines

• Various small diesel inboard applications

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Other Diesel Engine Applications

Common across compact diesel platforms including:

• Bukh
• Yanmar (select pump setups)
• Kubota-based marine engines
• Lombardini / Farymann / Nanni

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Johnson Pump Compatibility (Primary Fitment)

Fits Johnson F35 / F35B series raw water pumps, including:

• F35
• F35B
• F35B-8007
• F35B-8027
• K34A / K34M
• Threaded and slip port variants

Designed specifically for Johnson F35-series pump systems

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Serial Number Fitment Notice

Fitment depends on:

• Pump model (F35 required)
• Shaft type (pin-drive / slotted shaft)
• Engine application

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

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Impeller Specifications (Fitment Critical)

• Diameter: 1.57–1.58″ (40 mm)
• Width: 0.75″ (19 mm)
• Shaft: 12 mm (0.47″) pin-drive
• Blade Count: 6 blades
• Material: MC97 neoprene / EPDM

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What’s Included in the Kit

• Impeller
• O-ring
• Gasket (varies by kit 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 pin-drive alignment is correct
• Replace all seals and gaskets
• Inspect pump housing for wear

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Alternate / Superseded Part Numbers

OEM Cross References

• Johnson Pump: 09-808B-1 / 09-808B

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Major Cross References

• Volvo Penta: 875583-7, 833995, 3586496, 21951342
• Westerbeke: 032620, 46622, 46120, 42026
• Vetus: IMP00601

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Aftermarket Cross References

• Jabsco: 22405-0001
• Sierra: 18-3076
• Mallory: 9-45709
• CEF: 500121

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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 small Johnson impellers used in Volvo saildrive setups. The key identifier is the 6-blade design + 12mm pin-drive shaft—that combo instantly separates it from spline or keyed impellers