GXOAP-9085 is an overrunning alternator pulley for catalog-listed Opel applications. Catalog technical data includes OD1 59, OD2 53.7, W 34.7, R 6, ID 17, M M16, CLOCK CW. OEM/cross-reference numbers are listed for Bosch, Gm, Wai, Lester, Zen, Ruville. Alternator references are listed for Bosch, Opel, Lucas. Review the catalog fitment and reference numbers for compatibility before ordering.