Fits the following:
1965–66 Falcon with 289 with air conditioning
1965–66 Mustang with 289 with air conditioning
1965–66 Ranchero with 289 with air conditioning
1965–66 Comet with 289 with air conditioning
This reproduction of the non-adjustable accessory idler mounts below the stock compressor clutch / pulley and the crankshaft pulley on the stock 289 engine. It was designed by Ford as an add-on to take up the belt slack and solve complaints of excessive belt slap for 1965–66 289 engines.