• Genuine Komatsu matching product for 6D95 engine series
• Manufactured by NPR Piston Ring factory in Japan
• High-quality materials including chromium and iron alloys
• Special surface treatments for enhanced durability
• Precision engineering for optimal engine performance

1. Thoroughly clean all ring grooves of piston
2. Fit oil control ring followed by compression rings in ascending order using proper ring tool
3. Ensure all rings are installed with marked faces upward toward top of piston

• Confirm rings move freely without jamming in piston grooves
• Ensure ring gaps are not aligned with piston pin axis or thrust direction

Always use proper installation tool when inserting piston assembly into cylinder.

1. Hand-fit expander into ring groove, ensuring ends butt together properly
2. Hold expander at butt ends with thumb, then fit upper rail with gap approximately 45° to the left
3. Fit lower rail with gap approximately 45° to the right of expander ends