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The Mahle drop-in piston ring set for a 4.030 in bore supplies 1.0 mm top and second rings plus a 2.0 mm oil ring. These drop-in rings are intended for rebuilds or piston replacement to restore compression and oil control. Use them when the 4.030" bore and the listed ring thicknesses are required to maintain correct ring gaps and provide a straightforward direct-fit installation.
Mahle MS 4.030in 1.0mm 1.0mm 2.0mm Drop In Rings
