High quality performance parts at the right price made in USA. Kit comes with:&#######xA0. (10) parallel ground washers. (10) 12-point nuts needed for a direct bolt on. ARP moly-lube and instruction sheet. Replace your stock head bolts with ARP heavy duty head studs. The stud design helps the head and the block equalize the pressure better thereby creating a much more even and consistent seal. It is recommended to replace the head studs/bolts with a new set if the head bolts are ever loosened due to metal fatigue. Reusing an old and possibly warped or stretched head bolts/studs will sacrifice the seal between the head and block and may cause head gasket leak. This is a great an easy upgrade when doing an engine rebuild or building a race motor. Studs are 8470 chrome moly steel, with a black oxide coating for corrosion resistance. The studs are thread-rolled after heat treat, and center-less ground which results in a studs that has 2000% better fatigue strength than others. ARP studs are rated at 200,000 PSI. Using studs will make it much easier to assemble an engine especially a racing power plant which must be serviced frequently and quickly! With the cylinder head and gasket assured of proper alignment. Studs Provide more accurate and consistent torque loading When you use bolts to secure the head, the fastener is actually being twisted while it’s being torqued to the proper reading. The bolt is reacting to two different forces simultaneously. A stud should be installed in a relaxed mode – never crank it in tightly using a jammed nut. If everything is right, the studs should be installed finger tight. Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Socket Size(s):&#######xA0;12mm 12pt, 4mm Allen. Applications : Toyota 2.0L 3SGTE. &#####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. Kit comes with: (10) head studs (10) parallel ground washers (10) 12-point nuts needed for a direct bolt on ARP moly-lube and instruction sheet Replace your stock head bolts with ARP heavy duty head studs. Socket Size(s): 12mm 12pt, 4mm Allen Applications: Toyota 2.0L 3SGTE.