GXOAP-9288 is an overrunning alternator pulley for catalog-listed OPEL applications. Catalog technical data includes OD1 54, OD2 49, W 39.8, R 6, ID 17, M M16, CLOCK CW. OEM/cross-reference numbers are listed for Ina, Gm, Opel, Bosch, Wai. Alternator references are listed for Bosch. Review the catalog fitment and reference numbers for compatibility before ordering.