MAHLE 3815MS-112 File Fit Piston Ring Set 3.815" Bore 1.0mm 1.0mm 2.0mm

The MAHLE 3815MS-112 is a premium file-fit piston ring set designed for precision engine building and performance applications. This ring set is engineered for a 3.810" bore with +.005" oversize, providing a final bore diameter of 3.815 inches.

Ring Configuration:

• Top compression ring: 1.0mm width
• Second compression ring: 1.0mm width
• Oil control ring: 2.0mm width

Key Features:

• File-fit design allows custom end-gap fitting for optimal ring seal and performance
• Manufactured by MAHLE, a leading OEM supplier known for precision tolerances and quality materials
• Oversize specification (+.005") accommodates performance rebuilds and bore corrections
• Metric ring widths compatible with modern engine designs

File-fit rings require proper end-gap filing and fitting by an experienced engine builder to achieve correct ring gap specifications for your specific application. These rings are ideal for custom engine builds, performance applications, and racing engines where precise ring-to-cylinder clearances are critical for optimal compression, oil control, and engine longevity.