GXOAP-9020 is an overrunning alternator pulley. Catalog technical data includes OD1 61, OD2 56, W 33.6, R 5, ID 17, M M16, CLOCK CW. OEM/cross-reference numbers are listed for Bosch, Lukina, Ruville, Skf, Ika, Ina, Gates, Audi, Wai, Cargo, Zen. Review the catalog fitment and reference numbers for compatibility before ordering.