Description

The Yamaha 6AW-44352-00-00 Impeller is a genuine OEM water pump impeller designed for Yamaha F300 and F350 V8 outboard engines. This impeller is responsible for circulating cooling water through the engine, ensuring proper temperature control and preventing overheating.

Built to exact Yamaha specifications, this impeller delivers optimal fit, performance, and durability—making it the preferred choice for maintaining factory-level reliability in high-horsepower offshore outboards.

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Key Features

• Genuine Yamaha OEM impeller
• Designed specifically for V8 offshore outboards
• Maintains proper water flow and cooling performance
• High-quality flexible rubber construction
• Precision-molded for exact fit and long service life
• Direct replacement with no modifications required

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Engine Compatibility

Yamaha Outboards (4-Stroke V8)

• F300 (4.2L V8)
• F350 (5.3L V8)

Designed for Yamaha’s V8 offshore engine platform

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Serial Number Fitment Notice

Fitment may vary by:

• Model year
• Lower unit configuration

Always confirm using:

• Engine serial number
• OEM part number match (6AW-44352-00-00)

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When This Part Needs Replacement

Replace the impeller if you notice:

• Weak or no telltale stream
• Engine overheating
• Reduced water pressure
• Cracked, hardened, or deformed vanes
• After seasonal storage

Recommended service interval: every 100 hours or annually

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Installation Notes

• Install with correct impeller rotation
• Lubricate impeller during installation
• Inspect wear plate and housing for scoring
• Replace full water pump kit if excessive wear is present
• Ensure proper key alignment on shaft

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Alternate / Superseded Part Numbers

OEM Cross References

• Yamaha: 6AW-44352-00-00

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Aftermarket Cross References

• Sierra: 18-3067
• Mallory: 9-45627

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Shipping

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

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Parts Desk Insight

On high-horsepower offshore engines like the F300/F350, a failing impeller can still move water at idle but struggle at higher speeds—leading to overheating when running hard.

Replacing it on schedule helps protect your engine and keeps performance consistent when you need it most