THIS PART IS #18 IN THE DIAGRAM 

OUTSIDE DIAMETER IS 50MM

INSIDE DIAMETER IS 34MM

 NEW OLD STOCK 0.8MM  THICK DIFFERENTIAL CASE SIDE SHIM FOR 1969-70 OPEL GT 1100 AND 1968-71 KADETT  MODELS WITH 1.1 LITER  ENGINE

I CAN USUALLY COMBINE SHIPPING WITH MY OTHER ITEMS. PLEASE CONTACT ME TO VERIFY.

 USA  SHIPPING IS FREE. INTERNATIONAL SHIPPING IS $14.00.