MAHLE 4615SL-043 4.610"+.005" File Fit Steel Low Tension Piston Ring Set

The MAHLE 4615SL-043 is a File Fit, Steel Low Tension piston ring set designed for a nominal bore diameter of 4.610" +.005". MAHLE is a globally recognized OEM and performance engine component manufacturer, and this ring set reflects their commitment to precision tolerances and high-quality metallurgy.

This is a three-ring set with the following ring widths:

• Top Compression Ring: .043" — Steel construction for excellent heat transfer and wear resistance
• Second Compression Ring: .043" — Provides additional sealing and oil scraping function
• Oil Control Ring: 3.0mm — Low-tension design reduces friction and improves fuel efficiency

Key Features:

• File Fit design — Ring ends must be hand-filed to achieve the correct end gap for the specific application, allowing builders to dial in precise tolerances for street, performance, or racing builds
• Steel construction — Superior durability and thermal stability compared to cast iron rings
• Low Tension — Reduced radial tension minimizes cylinder wall friction, improving horsepower and reducing heat buildup
• MAHLE OEM-grade manufacturing — Meets or exceeds original equipment specifications
• Sold as a set for one piston (single cylinder)

File Fit rings are the preferred choice for engine builders who require precise end-gap control. Always verify bore diameter and confirm proper end gap using a feeler gauge before final installation. Compatible with standard piston ring grooves sized for .043"/.043"/3.0mm configurations.