ZWITTER" style gas tank brand NEW in the MARKET. The Zwitter tank originally came in Oval split window Beetles made from Oct. 1952 to March 1953.
The Zwitter tank has this unique big and square top with the 60mm filler neck.
The most common style of tank used between 1956-1960 was the round rump back style.This tank has a 60MM filler inlet size to be used with 211201551 Gas Cap.
The Zwitter style tank will fit all Beetles made from 1950 to 1960.