Water Pump Impeller Kit for Yamaha Outboard 255 300HP 6P2 W0078 00 00 18 3515

Product Overview

This water pump impeller kit ensures proper cooling for Yamaha outboard engines in the 255-300HP range. It includes the impeller and necessary gaskets to restore raw water circulation. Designed for boaters who need a reliable impeller replacement to prevent overheating and maintain engine performance.

Key Features & Performance

• Includes impeller, gaskets, and seals for a complete rebuild
• Direct fit for Yamaha 255-300HP outboard models
• High-quality rubber impeller resists heat and wear
• Precision molded blades deliver consistent water flow
• OEM-spec construction ensures long service life

Fitment & Compatibility

• Yamaha outboard engines 255HP to 300HP
• Models requiring OEM part 6P2-W0078-00-00 or 18-3515

Common Uses

• Replacing worn impellers during annual maintenance
• Restoring cooling system performance after overheating events
• Upgrading older impellers for better reliability

Technical Specifications

• Part Number(s): 6P2-W0078-00-00, 18-3515
• Material: Rubber impeller with stainless steel insert
• Application: Yamaha outboard 255-300HP

Frequently Asked Questions

Q: How often should I replace the water pump impeller? A: Yamaha recommends replacing the impeller every 200 hours or annually to avoid overheating and damage.

Q: Does this kit include the housing? A: No, this is the impeller kit only; you will reuse the original pump housing.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.