AC Belt - Contitech - 78 to 79 - 13 x 1075 AC Compressor was the early Bosch "Brick" Type. Changed in 1980 to the NipponDenso Type. From Eng. # 8181766 Manual & 8189379 Auto - Used Pulley 928 102 118 00 #16 on the PET Drawing Earlier 78 cars used 999 192 127 50