MICHIGAN 77 315-0032.045 Piston Ring Set Bore File Fit Cylinder - 4.165 8

The MICHIGAN 77 315-0032.045 piston ring set is engineered for 8-cylinder applications requiring a 4.165-inch bore diameter. This complete kit provides precision-manufactured rings designed for reliable compression sealing and oil control in high-performance and stock rebuilds.

Key Features:

• 4.165-inch bore diameter for precise cylinder fitment
• File-fit design allows custom end gap adjustment for optimal sealing
• Ring configuration: 1/16" top compression ring, 1/16" second compression ring, 3/16" oil control ring
• Plasma moly face coating on compression rings for enhanced wear resistance and faster break-in
• Standard tension design balances sealing performance with reduced friction
• Complete 8-cylinder kit includes all rings needed for a full engine rebuild

The file-fit construction gives engine builders the flexibility to precisely set ring end gaps to match specific bore conditions and performance requirements. The plasma moly coating provides excellent scuff resistance during critical initial break-in periods while promoting proper ring seating. Ideal for street performance, marine, and industrial applications where proven durability and consistent compression are essential.