Exchange final drive I=38:11=3,45 for 320i up to 09/1985 without cat, you need 1 for 1 car and for 320i up to 09/1985 without cat only for country version I, you need 1 for 1 car and for 320i all years of manufacturing without cat only for country version F, you need 1 for 1 car

BMW Sedan 320i, 323i, M3 (E30)