PROPELLER
Piston kits assy 688-11631-00 for yamaha 75hp 85hp 90hp
Restore maximum cylinder compression, engine power, and overall reliability with this premium standard-bore (STD) piston assembly kit. Specially designed for Yamaha 75HP, 85HP, and 90HP 2-stroke outboard engines, this heavy-duty kit is precision-cast to withstand extreme combustion pressures and high operating temperatures in harsh marine environments.
Marine Engine Piston Assembly Kit STD for Yamaha 75HP 85HP 90HP Outboards 688-11631-03-94
Restore maximum cylinder compression, engine power, and overall reliability with this premium standard-bore (STD) piston assembly kit. Specially designed for Yamaha 75HP, 85HP, and 90HP 2-stroke outboard engines, this heavy-duty kit is precision-cast to withstand extreme combustion pressures and high operating temperatures in harsh marine environments.
Key Features & Product Highlights
- High-Silicon Aluminum Alloy: Manufactured from premium alloy with low thermal expansion to prevent scuffing and wall friction during intense high-RPM operation.
- Complete Rebuild Package: Comes as a complete engine overhaul kit—includes 1x Piston, 1x Set of Piston Rings, 1x Gudgeon Wrist Pin, and 2x Circlips.
- Precision CNC Machining: Engineered to strict OEM tolerances for optimal wall clearance, excellent sealing performance, and restored compression.
- Corrosion & Heat Resistant Coating: Specially treated piston crown and skirts minimize carbon buildup, heat stress, and cylinder friction.
Technical Specifications
Feature | Specification |
OEM Reference Part Number | 688-11631-03-94 / 688-11631-00 / 688-11631-01 / 688-11631-02 |
Bore Size | Standard (STD) / 82mm Bore |
Compatible Engine Type | Yamaha Outboard Motors (2-Stroke) |
Engine Horsepower | 75 HP, 85 HP & 90 HP (3-Cylinder Series) |
Condition | 100% Brand New Marine Aftermarket Replacement |
Kit Contents | 1x Piston, 1x Ring Set, 1x Wrist Pin, 2x Circlips |
Engine & Model Compatibility
Fits Yamaha 3-cylinder 2-stroke 75HP, 85HP, and 90HP outboard engines, as well as equivalent aftermarket models:
- Yamaha 2-Stroke: 75HP, 85HP, 90HP (ETN / E90 / 90A series)
- Compatible Outboard Brands: Parsun, Powertec, Hidea 85HP/90HP 2-stroke models based on Yamaha 688 engine platform.
