ARP water pump pulley stud kit includes 5/16-24 x 4.000 inch black 12-point studs with a 2.750 inch fan spacer for specific pulley spacing requirements. The studs and spacer conform to that thread and length specification for direct replacement, helping ensure correct fan clearance and making reinstallation and routine maintenance more straightforward.
ARP 5/16-24 X 4.000 black 12pt water pump pulley w/ 2.750in fan spacer stud kit