Originally Posted by check171
Not sure on the 12 or 14 mm I will check and post back up .
They are the ones with the washer built in to the back of them.
If you have the 12mm thread, it'll have a 19MM head.
If you have the 14mm thread, it'll have the 21MM head.
Since you have a 2003, it'll be the 14mm thread.
Also, if you have the 12mm, your torque value will be at 100 ft-lbs, if you have the 21mm, you'll be torquing the lugs to 150 ft-lbs.