Improving your VW's cooling is made possible by boosting the speed of air flowing through the fan. This Venturi Ring is made of durable stainless steel and features spot-welded mounting tabs and a sleek satin black power-coated finish. This ring can be easily installed on any factory or aftermarket fan shroud using welding, brazing, or rivets. Using this Venturi Ring on an early internal oil cooler can increase airflow by 8%.
Made in the USA!
1949-197 Classic Air Cooled VW Engine Cooling Tin Application Guide