NPR SWM31049-0 Piston Ring Set for Mitsubishi 82.30mm Bore

The NPR SWM31049-0 is a precision-engineered piston ring set designed specifically for Mitsubishi engines with an 82.30mm (3.240 inch) cylinder bore diameter. Manufactured by Nippon Piston Ring Co., Ltd., a leading Japanese manufacturer since 1931, this piston ring set delivers superior sealing performance and durability for demanding engine applications.

Key Specifications:

• Bore Diameter: 82.30mm (3.240 inches)
• Ring Thickness: 1.20mm (0.047 inches)
• Radial Width: 3.10mm (0.122 inches)
• Ring Profile: Barrel Face (BF) design for optimal cylinder wall contact
• Surface Treatment: Gas Nitrided (SR35) for enhanced wear resistance
• Material: High-quality steel or cast iron construction
• Stock Item: S-designation indicates regular stock availability

Features and Benefits:

• Gas nitriding surface treatment provides exceptional wear resistance and durability under high-temperature conditions
• Barrel face profile ensures proper cylinder wall contact and effective sealing throughout the stroke
• Precision-manufactured to meet JIS (Japanese Industrial Standard) B8032-6-1998 specifications
• Engineered to seal combustion gases, control lubricating oil, dissipate heat, and prevent wear and seizure
• Designed for modern engines requiring compact, lighter components with sophisticated performance
• Reduces oil consumption and improves engine performance through proper sealing

NPR piston rings are the result of extensive engineering knowledge and rigorous testing on actual engines in collaboration with automobile manufacturers. Each ring set is tested on NPR's own engine test benches to ensure reliability and proper fitment. The gas nitrided surface treatment enhances wear resistance and extends service life, making these rings ideal for both street and performance applications.

This piston ring set is specifically designed for Mitsubishi engine applications and represents NPR's commitment to delivering unmatched performance and reliability for internal combustion engines worldwide.