Valve guide 13,1mm /6.35 mm (this is the basic size, you have to machine it to the matching diameter of your valves) for 325e, 325i and 325ix for all years of manufacturing you need 12 for 1 car
Valve seat ring, exhaust 38,05MM(+0,4) for 325e from 12/1986 up, you need 6 for 1 car and for 325i+325ix all years of manufacturing, you need 6 for 1 car
Valve seat ring, intake 43,55MM(+0,4) for 325e from 12/1986 up, you need 6 for 1 car and for 325i+325ix all years of manufacturing, you need 6 for 1 car