MICHIGAN 77 315-0034.040 Plasma-Moly Piston Ring Set 4.040" Bore 8-Cylinder

The MICHIGAN 77 315-0034.040 is a high-performance plasma-moly piston ring set manufactured by Mahle Clevite, designed for 8-cylinder engines with a 4.040-inch bore diameter (standard +.040" oversize). This complete ring set delivers enhanced sealing, reduced friction, and improved oil control for performance and racing applications.

Key Specifications:

• Bore Size: 4.040 inches (+.040" oversize)
• Ring Widths: 5/64", 5/64", 3/16" (top compression, second compression, oil ring)
• Material: Moly-faced ductile iron with plasma-moly coating
• Configuration: 8-cylinder set (includes rings for all cylinders)
• Tension: Standard tension
• Design: Reduced Radial Wall (RRW) construction

Performance Features:

• Plasma-moly coating maximizes combustion sealing while minimizing frictional losses
• Reduced radial wall top rings improve conformability to cylinder walls
• CP-20 oil rings provide superior oil control and reduced tension
• Ductile iron construction ensures durability under demanding conditions
• Engineered to increase horsepower output and efficiency

This Mahle Original piston ring set is ideal for performance rebuilds, racing engines, and applications requiring precise tolerances. The plasma-moly treatment provides excellent wear resistance and heat dissipation, making it suitable for high-performance street and track use.