The Mahle OE Moly Ring Set is a moly-coated piston ring package specified for high-displacement race engines. The description lists fitment for Chevy race 427/454 engines and Chrysler race 383/426 engines, so buyers should confirm correct engine application. These ring sets are intended as direct replacements for the named race engine families where moly rings are specified.
Mahle Rings Chevy Race 427/454 Engs Chry Race 383/426 Engs Moly Ring Set