High quality performance parts at the right price made in USA. ARP Custom Made Head Stud Kit for Mitsubishi 1.8L 4G93 2.0L 4G94 MI15001. This main stud kit includes. 10 parallel ground washers. ARP recommends studs are over bolts because of the ability to obtain a more accurate torque reading studs provide over bolts. Studs don’t twist as they are fastened down. Additionally, because of this there is less force exerted on the thread of the block, which results in increased block life, especially on aluminum blocks. Main stud kit – to bolt the main caps of the crankshaft! ARP main studs eliminate main cap walk, as well as protect the threads of the block. ARP recommends to use main studs over main bolts whenever possible. This is because of the studs ability to provide a more accurate torque reading because studs don’t twist in the block as they are torqued down. All clamping forces are on one axis. There is also less force exerted on the block threads, which improves the engine block’s life. Finally, studs allow for proper alignment of the main caps and easier engine assembly. ARP 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. 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. &#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B;&#####x200B. Please allow 24 hours for the tracking information to update. International orders may take extra days to process. Euroexport holds the right to cancel any order at any time. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. Wiseco pistons with part number starting in KE. See our other items. This main stud kit includes —10 studs —10 parallel ground washers —10 twelve-point nuts —moly torque lube —an instruction sheet ARP recommends studs are over bolts because of the ability to obtain a more accurate torque reading studs provide over bolts.