If you have a 1965 Ford Falcon then you're going to need to know your engine size, as this could change which idler arm you'll need.
- K8106 fits the 2.8L L6 276cc/170cid
- K8160 fits the 4.3 L V8 4261cc-260cid as well as the 4.7L V8 289cid
If you have a 1964-1966 Ford Mustang you'll also need to know your engine size before purchasing your idler arm because this will change which one you'll need.
- K8106 fits the 4.7L V8 4727cc-289cid
- K8160 fits the 3.3L L6 3277cc/200cid as well as the 2.8L L6 2786cc/170cid
Lastly, if you have a Mercury Comet you're going to need to know your engine size as well. Because, this will change which idler arm you need.
- K8106 fits the 4.7L V8 4727cc/289cid
- K8160 fits the 2.8L L6 2788cc/170cid as well as the 3.3L L6 3277cc-200cid