FORD 6.0 POWERSTROKE DIESEL ARP CYLINDER HEAD STUD KIT & HEAD GASKET SET 18mm. Ford Powerstroke 6.0 18mm Dowel Pin Size Call for 20mm. 1 Brand New ARP Head Stud Kit 1 Brand New Head Gasket Set 2 18mm Black Diamond MLS Head Gaskets. YOUR ONE STOP SHOP FOR ALL HEAVY DUTY PARTS! WE HAVE DEUTZ, CAT, JOHN DEERE, PERKINS, CUMMINS, DETRIOT, AND MORE! GIVE US A CALL FOR ALL OF YOUR PARTS NEEDS! If the item you are looking for is not listed or you are not sure what parts you need, please ask. 4975 Clark Howell Hwy Ste 2E. College Park, GA 30349. Track Page Views With. Auctiva’s FREE Counter.