The Mahle OE moly ring set PC479 is a piston ring set specified for a 4.505-inch bore with ring thicknesses listed as 1/16, 1/16 and 3/16. Intended for high-tension performance engine builds, the moly-faced rings provide a durable sealing surface while fitting the bore and thickness combination noted. This set is presented for direct use in compatible engines requiring the described bore and ring dimensions.
Mahle Rings 4.505in Bore 1/16in1/16in3/16in PC479 Fire-Power High Tension Perf Eng Set Moly Ring Set