GXOAP-9055 is an overrunning alternator pulley for catalog-listed Alfa, FIAT and Lancia applications. Catalog technical data includes OD1 58, OD2 54, W 41.5, R 6, ID 17, M M17, CLOCK CW. OEM/cross-reference numbers are listed for Denso, Fiat, Litens, Znp, Skf, Zen, Ina. Alternator references are listed for Denso. Review the catalog fitment and reference numbers for compatibility before ordering.