MAHLE 3801MS-112-1 Piston Ring Set 3.801" Bore 1.0mm 1.0mm 2.0mm File Fit

The MAHLE 3801MS-112-1 piston ring set is a precision-engineered single-cylinder ring pack designed for high-performance engine builds requiring exact bore specifications. This file-fit ring set is sized for a 3.801" bore (3.796" + 0.005" oversize) and features standard tension construction for reliable sealing and durability.

Ring Configuration:

• Top compression ring: 1.0mm thickness
• Second compression ring: 1.0mm thickness
• Oil control ring: 2.0mm thickness
• File-fit design allows precise end gap customization during installation
• Standard tension for balanced seal and ring life

Key Features:

• MAHLE OE-quality materials and manufacturing standards
• 0.005" oversize for precision bore matching
• Single cylinder set—order multiple sets for multi-cylinder applications
• File-fit ends require proper gapping to engine specifications
• Suitable for performance rebuilds and custom engine applications

MAHLE piston rings are manufactured to exacting tolerances and are trusted by engine builders worldwide. The file-fit design provides the flexibility to achieve optimal end gaps for your specific application, ensuring proper compression seal and oil control. This ring set is ideal for custom builds, racing applications, or precision stock rebuilds where exact bore sizing is critical.