NPR SWC10025-4 Piston Ring Set for Engine - 4-Cylinder

The NPR SWC10025-4 is a high-quality piston ring set designed for 4-cylinder engines. Manufactured by Nippon Piston Ring (NPR), a leading Japanese manufacturer of engine components established in 1934, this ring set delivers superior sealing performance and durability for demanding applications.

Key Features:

• Complete ring set for all 4 cylinders
• Premium Japanese engineering and manufacturing quality
• Advanced surface treatments for enhanced wear resistance
• Precision-manufactured to meet or exceed JIS (Japanese Industrial Standard) B8032-6-1998 specifications
• Optimized ring tension for proper sealing and reduced oil consumption
• Superior heat dissipation properties

NPR piston rings are engineered to seal combustion gases, control lubricating oil, dissipate heat, and prevent wear and seizure under severe operating conditions. The rings feature advanced material composition and surface treatments including chrome plating, nitriding, or ferrox coating depending on ring position, ensuring long-term reliability and performance.