Many years ago I saw a picture of this fan in an antique car magazine. Unfortunately I don’t remember the year, make or model of car it was on. It was a large high dollar car but that is all I remember.
The fan is 22″ in diameter with a 1″ diameter shaft which clamps to a bracket on the engine. It uses a 1 1/4″ wide flat belt. The adjustment is by an ecentric. It spins smoothly.