MAHLE 4150MS-112 File Fit Piston Ring Set Bore - 4.145 005

The MAHLE 4150MS-112 is a premium file-fit piston ring set designed for precision engine builds requiring custom ring end gap sizing. This set is engineered for a 4.145-inch bore with a +.005-inch oversize, making it ideal for performance rebuilds and bore modifications.

Key Specifications:

• Bore Size: 4.145 inches with +.005-inch oversize tolerance
• Top Ring: 1.0mm thickness
• Second Ring: 1.0mm thickness
• Oil Ring: 2.0mm thickness
• File-fit design allows custom end gap adjustment for optimal seal and performance
• Manufactured to MAHLE's exacting OE and performance standards

File-fit rings are essential for professional engine builders who need to precisely control ring end gap for specific applications. These rings come unfinished at the ends, allowing the installer to file the gap to exact specifications based on bore condition, intended use, and performance requirements. MAHLE piston rings feature advanced materials and coatings for superior wear resistance, heat dissipation, and oil control.