Subscribe to a magazine

Engine Fan

Back to article View Gallery
5 of 16
There are a lot of choices for belt-driven fans. This Flex-a-lite Flex Fan (right) will move air at slower engine speeds, but flatten out at higher rpm, reducing the amount of power it takes to spin the fan. This gives good cooling and a performance gain. For a tow vehicle or one you use in the mud or sand, though, you want optimum airflow even at higher rpm, and you should stick with a fixed blade fan and heavy-duty clutch.