Yamaha HPDI 3.3L Powerhead Rebuild Kit 225–300 HP (2003–2015) – Complete V6 Engine Overhaul Kit WSM Platinum Series

Restore full factory performance to your Yamaha HPDI outboard with this New WSM Powerhead Rebuild Kit for Yamaha V6 225–300 HP 3.3L HPDI engines (2003–2015). Engineered for precision, durability, and long-term reliability, this complete overhaul kit is designed for professional marine rebuilds and serious engine restorations.

Built around WSM Platinum Series pistons with advanced M0S2 anti-friction coating, this kit delivers improved heat resistance, reduced wear, and smoother engine operation under high-load marine conditions. Each piston comes fully assembled with high-quality Japanese rings, pins, and clips for dependable compression and long service life.

This kit includes all essential internal components required for a full powerhead rebuild, eliminating the need to source multiple parts individually. From pistons and gaskets to bearings and rod bolts, every component is selected to meet or exceed OEM performance standards.

Designed specifically for Yamaha HPDI 3.3L V6 engines, this rebuild kit is ideal for restoring power, efficiency, and reliability in high-performance outboard applications. Whether you are rebuilding for commercial use or recreational performance, this kit provides a complete, cost-effective solution.

Key Benefits:

• Complete Yamaha HPDI 3.3L powerhead rebuild solution
• Designed for 225–300 HP V6 engines (2003–2015)
• WSM Platinum Series pistons with M0S2 coating for reduced friction
• Includes pistons, bearings, gaskets, and rod bolts for full overhaul
• OEM-equivalent quality for professional marine rebuilds
• Improves engine compression, reliability, and long-term performance
• Ideal for high-load and extended runtime marine applications