I can not help you with a k12 airco removal but if you happen to need a belt, use a piece of thread and put some snug knots in that and snip it and bring it to a car parts store of you choice and say, want this length, that many ribs. (counted from the former belt). Removing the airco shouldn't be hard and for the bracket, if you say so. My k11 can only run with a single belt without power steering.