GXOAP-9136 is an overrunning alternator pulley for catalog-listed MercedesBenz applications. Catalog technical data includes OD1 55, OD2 50, W 46, R 6, ID 17, M M16, CLOCK CW. OEM/cross-reference numbers are listed for Db, Cargo, Wai, Valeo, Zen. Alternator references are listed for Db, Valeo. Review the catalog fitment and reference numbers for compatibility before ordering.