Piston Ring for CUMMINS QSB 4.5 3.9Reference3804930Engine applicationsCUMMINS QSB 4.5 3.9ring axial heights mm2.38 / 2.38 / 4piston ring 1 type codeR IWpiston ring 2 type codeM IFUpiston ring 3 type codeDSFpiston ring 1 material codeKV1piston ring 2 material codeIKApiston ring 3 material codeIKApiston ring 1 surface treatment codeCR Ppiston ring 3 surface treatment codeCR POther references on this record3804930393251939325203942265Piston ringBrowse this categoryBrowse this brand · CUMMINSProduct page · 3804930CUMMINS