Bring your Yamaha HPDI back to life with our all-in-one Powerhead Rebuild Kit, engineered for Yamaha 225 – 300 HP HPDI 3.3L engines. Designed for both professional marine mechanics and seasoned boat owners, this complete kit provides everything you need to rebuild your outboard powerhead with factory-level precision and reliability. The rebuild kits offer a combination of cast WSM Platinum Series (M0S2 coating) Pistons, complete with Japanese rings, pins, and clips, highest-quality gaskets available, and the necessary crank bearings, rod bearings, and rod bolts.
This rebuild kit is designed for Yamaha 225-300 HP HPDI 3.3L Powerheads from 2003-2015 with 3.661" bore standard pistons.
The kit includes the following:
- Three Port and Three Starboard Platinum Series Pistons [Complete with rings, pins, and clips]
- One Gasket Set [including 2 Head Gaskets, 2 Head Cover Gaskets, 1 Base Gasket, 2 Plug Gaskets, 6 Reed Valve Gaskets, 2 Intake Gaskets, 1 Exhaust Gasket, 2 Lower O-Rings, 1 Bypass Cover Gasket,2 Thermostat Gaskets, 1 Crank Case Cover Gasket, 1 Bypass Cover Gasket, 2 Cover Gaskets, 1 Oil Pump O-Ring, 1 Crank O-Ring, 1 Upper Crank Oil Seal, 1 Lower Crank Seal, 1 Crank Seal, 1 Lower Seal and 2 Fuel Pump Gaskets]
- Two Different Upper Main Bearings, Two Center Main Bearings, and One Lower Main Bearing
- Six Upper Rod Bearings and Six Lower Rod Bearings
- Twelve Rod Bolts
Available with Standard Bore (3.661″) pistons or .020″ / .030″ / .040″ Oversize options. Please specify the size when ordering.
Why Choose OBParts Rebuild Kit?
- Comprehensive solution – All essential powerhead components in one box
- Quality you can trust – Sourced from leading OEM-equivalent manufacturers
- Better engine performance – Enhanced piston coating for smoother operation and reduced friction
- Long-term reliability – Engineered to handle extended hours and high-load conditions
Compatibility:
- Engine Type: Yamaha V6 HPDI 3.3L
- Horsepower Range: 225HP – 300HP
- Years: 2003 – 2015
- Bore: 3.661” (Standard Size)
- Piston Options: Standard / .020” / .030” / .040” Oversize Options
SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or International Shipping will be calculated after checkout. You will receive an email and a PayPal money request for the additional shipping charges at the email address provided. (Some items are excluded from international shipping)
If you have any questions, please contact us through e-mail at customerservice@marinepartswarehouse.com. Please provide your engine model number to help confirm compatibility.
