BMW (81-00) Seal Differential Output Flange (x2) REINZ 44x67x10/15.5mm e30 e36 Seal Differential Output Flange 44x67x10/15.5mm (set 2) BMW part# 33 10 7 505 602, by VICTOR REINZ. Please see FITMENT CHART below, under PRODUCT DESCRIPTION. NOTE: e23 733i fits FROM 09/1981 Production Date onward. NOTE: e24 633csi fits FROM 09/1982 Production Date onward.