BMW N20B20 head stud kit ARP
Install tips: MUST Drill and Tap the (4) 9mm holes in the engine block with 9,5 mm drill and make them M11x1,5 threads. This way all the engine block holes are M11x1,5 mm thread , and fit ALL (10) M11 Studs.
3 different sets - 8 , 6 , 5
Oil filter thread 3/4UNF , ports AN10 , M12x1,5 threaded hole for sensor