ARP water pump pulley stud kit, 5/16‑24 x 2.500 stainless steel 12‑point studs with a 1.250 inch fan spacer. The longer studs and 1.250in spacer are provided to establish increased fan clearance while securing the pulley, offered as a coordinated kit for installations that require that spacer length and stud specification.
ARP 5/16-24 X 2.500 SS 12pt water pump pulley w/ 1.250in fan spacer stud kit