12x1.5 Thread w/ 14.70mm Knurl
Sold as a pack of 4 and available for NA/NB models
Note: NA/NB 1.8L have a different rear stud
NA6, NC and ND use a 12.87mm knurl on the front and the rear.
NA8 and NB use a 12.87mm knurl on the front and a 14.70mm on the rear.