VW 1600 Based Type 1 And 2 Cooling Fans Stock Or Welded And Hub Hardware. The cooling fan is the most important part of an air cooled engine. These are the 1971 and later style fans which are 36.9mm outer fan dimension for maximum cooling and can be used with any of the EMPI fan shrouds including the angled Ram-Air fan shrouds they will also work with the 1971 and later dog house style stock fan shrouds. The welded fan has 56 welds 28 each side, welded in an alternating pattern, bead blasted and statically balanced for higher RPM's. Fan mounting hardware kit is also available, includes: hub, nut and washers.