GXOAP-9056 is an overrunning alternator pulley. Catalog technical data includes OD1 63, OD2 58, W 50.7, R 6, ID 17, M M16, CLOCK DW. OEM/cross-reference numbers are listed for Bosch, Ford, Volvo, Ina. Alternator references are listed for Ford, Volvo, Zen. Review the catalog fitment and reference numbers for compatibility before ordering.