Description

The Volvo Penta Impeller Kit 21951346 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 marine engines, making it an essential maintenance item for dependable operation.

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 engine applications.

Engine Compatibility

Diesel Engines

• D4 Series
• D6 Series

Gasoline Engines

• Select Volvo Penta V6 and V8 engines.

Designed for engines equipped with compatible raw water pump configurations. Always confirm compatibility using your engine serial number before ordering.

Serial Number Fitment Notice

Fitment depends on engine model and variant, pump configuration, and engine serial number. Always confirm compatibility using your engine serial number before ordering.

Impeller Specifications

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

What’s Included in the Kit

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

When This Part Needs Replacement

Replace the impeller if you notice reduced or no cooling water flow, engine overheating, cracked/missing/stiff vanes, or after seasonal storage. Recommended service interval: every 100 hours or annually.

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.

Alternate/Superseded Part Numbers

OEM: 21951346. Aftermarket cross-references: Johnson Pump 09-812B-1, Sierra 18-3057 (verify fitment before ordering).

Parts Desk Insight

Volvo Penta impeller kits in this range are often visually similar but not interchangeable. Even small differences in diameter or hub style can affect cooling performance — always match by part number or serial number to get it right.

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