MAHLE 3586MS-15 Piston Ring Set Bore File Fit - 3.581 1.5/1.5/3.0mm

The MAHLE 3586MS-15 is a high-performance piston ring set designed for 3.581" bore engines with a +0.005" oversize tolerance. This file-fit ring set features a modern metric configuration with 1.5mm top ring, 1.5mm second ring, and 3.0mm oil ring.

Ring Configuration:

• Top Ring: Ductile iron construction with plasma moly coating and barrel face profile for superior wear resistance and oil control
• Second Ring: Cast iron reverse twist design for enhanced cylinder wall sealing
• Oil Ring: 3-piece standard tension design for optimal oil management

Key Features:

• 3.581" bore diameter with file-fit ends for precise gap adjustment
• Standard tension oil ring assembly
• Ultra-flat ring flanks maximize ring-to-piston groove sealing
• Advanced metallurgy minimizes friction for increased horsepower
• Metric 1.5/1.5/3.0mm configuration ideal for modern performance builds

MAHLE pioneered computer simulation and development tools to engineer piston rings that reduce parasitic friction losses while maintaining exceptional sealing. The precision-manufactured ring flanks ensure consistent contact with the piston groove, preventing blow-by and maximizing combustion pressure retention. File-fit ends allow the installer to precisely set end gaps for specific applications and boost levels.