Mahle OE moly ring set specified as a ductile plasma moly engine kit with 1.5/1.5/3.0 mm ring widths and standard tension oil ring for a 4.065 in. bore. These rings provide factory‑style dimensions for engine rebuilds, delivering proper piston ring fit and oil control when matched to corresponding pistons and cylinders per the listed bore size and ring thicknesses.
Mahle Rings Ductile Plasma Moly Engine Set 1.5 1.5 3.0MM Std Tension Oil Ring 4.065in Moly Ring Set