GXOAP-9169 is an overrunning alternator pulley. Catalog technical data includes OD1 61, OD2 54, W 36.4, R 5, ID 17, M M16, CLOCK CW. OEM/cross-reference numbers are listed for Bosch, Gm. Alternator references are listed for Bosch, Gm, Opel. Review the catalog fitment and reference numbers for compatibility before ordering.