MAHLE 4045MS-112 File Fit Piston Ring Set 4.045" Bore 1.0mm 1.0mm 2.0mm

The MAHLE 4045MS-112 is a premium file-fit piston ring set engineered for high-performance engine builds requiring precise ring gap customization. Designed for a 4.045-inch bore diameter (4.040" +.005" oversize), this three-piece ring set delivers optimal compression sealing and oil control in rebuilt or modified engines.

Ring Configuration:

• Top compression ring: 1.0mm thickness
• Second compression ring: 1.0mm thickness
• Oil control ring: 2.0mm thickness
• File-fit design allows custom ring gap adjustment for your specific application

Key Features:

• Precision-manufactured by MAHLE, a leading OEM and aftermarket piston ring supplier
• File-fit construction enables engine builders to hand-fit ring gaps to exact specifications
• Metric ring widths provide modern performance engine compatibility
• Ideal for performance rebuilds, stroker motors, and custom displacement builds
• +.005" oversize accommodates 4.045" finished bore diameter

MAHLE's advanced metallurgy and coating technologies ensure excellent wear resistance, heat dissipation, and long-term durability. This ring set is designed for professional engine builders and experienced enthusiasts who demand precise control over ring end gap for optimal performance and reliability.