Sorry...I actually should have specified this is an aftermarket knob. It has a 12mm thread size on it. Exact same as the Focus, and I test fit it on a Mustang...and it threaded on. You may want to double check the thread size on the Mustang shifter handle though.



Its made by Kamei. I purchased mine through FocusSport/EuroSport out of Anaheim, CA. Think I only paid like $10-15 for it.