C90 Piston Ring 47mm

C90 Piston Ring

For Moped, Cub and ATV

🔧 Piston Ring · Engine Overhaul · Universal Fit

Applicable Engines: 139FMB / 147FMD / 147FMF / 150FMG etc.

High-quality piston ring suitable for various horizontal engine vehicles, including mopeds, Cub series motorcycles, and ATVs

This is a C90 Piston Ring, suitable for various horizontal engine vehicles, including mopeds, Cub series motorcycles, and ATVs. The piston ring is a critical component of the engine piston assembly, responsible for sealing the combustion chamber, controlling oil consumption, and transferring heat. Manufactured from high-quality alloy cast iron, it offers excellent wear resistance, elasticity, and high-temperature stability, ensuring proper engine compression and smooth power output.

Applicable Engine Models:

Product Name	C90 Piston Ring
Application	Moped / Cub Series / ATV
Applicable Engines	139FMB / 147FMD / 147FMF / 150FMG and similar horizontal engines
Material	High-Grade Alloy Cast Iron
Kit Includes	Compression Rings + Oil Ring (Standard Set)

• Quality Material: Made from alloy cast iron with excellent wear resistance and high-temperature strength, extending engine life.
• Precise Dimensions: Strictly manufactured to OEM specifications, ensuring proper end gap, side clearance, and tension.
• Excellent Sealing: Precision-ground ring faces ensure perfect contact with cylinder walls for optimal combustion chamber sealing.
• Effective Oil Control: Optimized oil ring design effectively controls oil consumption and reduces carbon buildup.
• Wide Application: Suitable for various horizontal engine vehicles, ideal for engine overhaul and maintenance.

🔧 Installation Tip: When installing piston rings, use a proper ring expander tool to avoid over-expansion and breakage. Pay attention to ring orientation (if marked) and stagger the ring gaps (typically 120 degrees apart). Apply clean engine oil to the rings and piston ring grooves before installation. It is recommended to replace the piston and cylinder simultaneously during engine overhaul.

⚠️ Important Note: This product is a C90 piston ring, suitable for 139FMB, 147FMD, 147FMF, 150FMG and other horizontal engines. Different years or batches of engines may have piston size variations, please verify your piston diameter before purchasing. Images are for reference only; actual product may vary slightly.