Our Doghouse Venturi Ring improves your cooling on VW Type 1 engines. It works by increasing airflow through the fan with 7.3% more airflow across the entire RPM range. At 4,000 RPM that is 800 additional CFM! Stainless steel construction with a black powder coat finish.
Standard setup is for doghouse oil cooler, but can also be made to fit the early fan shroud (internal oil cooler) even the center mount fan shrouds. The ring is the same, the mounts are different.