
PROPELLER
Yamaha 66T-10935-00 Cylinder Liner Sleeve for 40HP 2-Stroke Outboard Motor
66T-10935-00 Cylinder Liner Sleeve is a high-quality replacement engine component designed for Yamaha 40HP 2-stroke outboard motors. The cylinder sleeve provides a durable inner surface for piston movement, helping maintain proper compression, reduce cylinder wear, and restore engine performance.
Yamaha 66T-10935-00 Cylinder Liner Sleeve for 40HP 2 Stroke Outboard Engine Parts
Product Overview
The 66T-10935-00 Cylinder Liner Sleeve is a high-quality replacement engine component designed for Yamaha 40HP 2-stroke outboard motors. The cylinder sleeve provides a durable inner surface for piston movement, helping maintain proper compression, reduce cylinder wear, and restore engine performance.
Made with precision machining and durable materials, this cylinder liner is an ideal replacement solution for worn or damaged engine cylinders during outboard motor overhaul and repair.

roduct Details
Product Name: Cylinder Liner Sleeve / Cylinder Sleeve
OEM Part Number: 66T-10935-00
Alternative Part Number: 66T-11312-00
Application: Yamaha Outboard Motor
Engine Type: 2-Stroke
Horsepower: 40HP
Engine Model: E40X Series
Compatible Yamaha Outboard Models
Designed to fit:
- Yamaha E40X 40HP 2-Stroke Outboard Motor
- Yamaha 40X Series Outboard Engine
Please confirm your engine model and original part number before ordering to ensure correct compatibility.
Key Features
✅ Restore Engine Compression
A worn cylinder sleeve can cause compression loss, reduced power, and unstable engine operation. Replacing the damaged liner helps restore proper cylinder performance.
✅ Precision Manufacturing
Produced with accurate dimensions and smooth inner surface finishing to ensure proper piston movement and reliable engine operation.
✅ Durable Material
Designed to withstand high temperature, friction, and continuous operation in marine environments.
✅ Ideal for Engine Rebuild
A practical replacement part for repairing older Yamaha 40HP outboard engines and extending service life.
Common Signs Your Cylinder Sleeve Needs Replacement
A damaged or worn cylinder liner may cause:
- Reduced engine power
- Low compression
- Excessive smoke from exhaust
- Increased oil consumption
- Piston or piston ring damage
- Abnormal engine noise
Replacing the cylinder sleeve during engine rebuilding can help improve reliability and performance.
Installation Recommendation
Cylinder liner replacement requires professional engine rebuilding skills. During installation, it is recommended to check:
- Piston condition
- Piston rings
- Cylinder clearance
- Engine compression
- Crankshaft condition
Proper installation helps achieve the best engine performance and service life.
Applications
Suitable for:
- Yamaha outboard engine repair
- Marine engine overhaul
- Boat maintenance workshops
- Outboard spare parts distributors
- Professional mechanics


