8x10mm Stepped OD Required for Replacement Oil Cooler 111-117-021 E on 1945 thru 1969 models with ORIGINAL Single Relief Crankcase This specialty kit was developed for those applications where an early Type 1 is converted to a doghouse -style oil cooler and vice-verse. Because of the tapered seal design these seals can perform double duty for both applications. The washer/spacers insure against crushing the seals beyond their capacity Beetle Type 1: 45-70 Bus Type 2: 50-70 Ghia: 56-70Oil Cooler Seal Kit for Beetle Bus & Ghia 56-70