Description

The Volvo Penta Impeller Kit 21951352 is a complete raw water pump service kit designed to maintain proper cooling system performance in Volvo Penta marine engines. This kit includes a precision-molded impeller along with sealing components and installation lubricant 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 ensures consistent cooling performance and helps protect your engine from damage.

This kit is commonly used across a range of Volvo Penta diesel engines, making it an essential maintenance item for dependable operation.

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Key Features

• Complete Volvo Penta impeller service kit
• High-quality flexible rubber impeller
• Includes gasket, O-ring, and installation lubricant
• Maintains proper raw water flow and cooling performance
• OEM fit and function
• Designed for marine diesel applications

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Engine Compatibility

Volvo Penta Engine Series

Diesel Engines

• D4 Series
• D6 Series

Other Applications

• Select Volvo Penta IPS systems
• Compatible inboard diesel engines

Designed for engines equipped with matching raw water pump configurations.

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Serial Number Fitment Notice

Fitment depends on:

• Engine model and variant
• Pump configuration
• Engine serial number

Always confirm compatibility using your engine serial number before ordering.

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Impeller Specifications

• Flexible multi-blade impeller
• Designed to OEM Volvo Penta specifications
• Hub type varies by pump configuration

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What’s Included in the Kit

• Impeller
• Pump cover gasket
• O-ring / sealing components
• Installation lubricant

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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
• After seasonal storage

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 gaskets and O-rings
• Inspect pump housing and wear surfaces
• Check system for broken vane debris

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Alternate / Superseded Part Numbers

OEM Cross References

• Volvo Penta: 21951352

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Aftermarket Cross References

• Johnson Pump: 09-812B-1 (verify application)
• Sierra: 18-3057 (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

Many Volvo Penta impellers in this range look nearly identical but differ slightly in size or hub design. Even small differences can affect cooling performance, so always match by part number or engine serial to ensure proper fit