Mahle file-fit piston ring set sized 3.552" +0.005 is a three-ring pack intended for precise rebuilds. It supplies 1.0mm top and second rings with a 2.0mm oil ring, allowing file-fit installation to restore compression and oil control. This oversize specification is presented for engine builders needing accurate ring dimensions for measured clearances during cylinder honing and assembly.
Mahle MS 3.552in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings