The Mahle OE 4.0000-inch bore moly piston ring set is a Claimer Series assembly featuring a moly top ring for rebuilds and engine service. It restores ring sealing and control of oil consumption in bored engines, supplying the core ring components needed during a rebuild. This concise offering suits machine-shop or DIY overhauls where original-style ring geometry and moly-faced sealing are required.
Mahle Rings 4.0000 Bore Dia Claimer Series Ring Set Moly Top Ring Moly Ring Set