Sea-Doo 1503cc Rotax 4-TEC ARP Head Stud Kit 168-4

ARP head studs are made from premium 8740 alloy, rated far superior to aircraft quality materials. Each set is heat treated to 200,000 psi, thread Rolled after heat treating, which results in a stud 1000% better than studs that are thread rolled prior to being heat treated. The kit includes 12-point nuts and hardened parallel ground washers. Using studs will make it much easier to assemble an engine, with the cylinder head and gasket assured of proper alignment. Studs provide more accurate and consistent torque loading. When you use bolts, the fastener is actually being twisted as torque is being applied to the it. The bolt is thus reacting to two different forces simultaneously.
Fits all Sea-Doo 1.5L 4TEC engines.