Belt Driven Fan Spacer Adapter, Screw On, thread 30mm X 1.5 left hand thread.
Notes:This has left hand threads for most applications with a V-belt, where the fan turns clockwise (When looking at the fan from the radiator side)
These Flex-a-lite mechanical clutch fan adapters are designed to replace the clutch hub by threading onto the water pump. They are made from steel and feature a female threaded hole size of 30mm x 1.5. Standard mechanical fans will require no modifications for installation.