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Mahle file-fit piston rings sized 3.640" +0.005 include 1.0mm top, 1.0mm second, and 2.0mm oil rings for professional engine builds. These rings require filing to final end-gap and are supplied for precise fitment during machining and assembly to ensure proper sealing and oil control. They are presented as a matched set to support accurate compression sealing when correct clearances are set by the machinist.
Mahle MS 3.640in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings
