To ensure proper sealing of valve covers, ARP manufactures a variety of special application-specific bolt and stud kits. Many professional engine builders prefer to use studs, rather than bolts, because of their ability to properly position the gasket and guide the cover into position. ARP offers these chrome moly steel stud kits in a black oxide finish or stainless steel, with the choice of a conventional hex (6-point) or compact 12-point nut with either finish. The hex (6-point) nuts feature a wide base for better load distribution and sealing, while the 12-point compact head is easily accessed in areas with tighter clearances. Stud kits come complete with nuts and washers.