MAHLE 4035ML-043 Piston Ring Set Bore Low Tension File Fit - 4.030 043

The MAHLE 4035ML-043 is an ultra-low friction piston ring set designed for 4.030" bore engines with a +.005" oversize. This performance-oriented file-fit ring set features MAHLE's advanced low tension design with ring widths of .043" (top), .043" (second), and 3.0mm (oil ring).

Key Features:

• 4.030" bore diameter with file-fit design for precise end-gap customization
• Ultra-low friction .043", .043", 3.0mm configuration reduces parasitic drag
• Low tension design minimizes friction for increased horsepower
• Ductile iron top ring with plasma moly barrel face for superior wear resistance
• Cast iron second ring with reverse twist design for optimal oil control
• 3-piece low tension oil ring assembly
• Ultra-flat ring flanks maximize ring-to-piston sealing

MAHLE pioneered the use of advanced piston ring simulation and computer development tools to engineer rings that deliver measurable horsepower gains through friction reduction. These rings are proven on the dyno and on the track, providing professional-grade performance for racing and high-performance street applications. The file-fit design allows engine builders to precisely gap the rings for specific applications and boost levels.