XAT ARP Head Stud Kit 1UZ Series V8 1UZ 3UZ 2UZ UZ SC400 GS400 LS400 SC430 GS430 LS430 GX470 LX470 Land Cruiser Tundra Sequoia 4Runner HSK Majesta

LISTING IS FOR HEAD STUDS FOR 1 COMPLETE ENGINE, BOTH HEADS! 

Head studs need to be torqued to 60 ft/lbs 

XAT Racing leads the world in Toyota/Lexus V8 parts! One of the most important and integral upgrades when squeezing more power out of the UZ engines is to go with better fasteners. We've developed a custom kit (not just reused other kits) to give your V8 a bit more room to work with safely, especially if you plan on boosting it! 

What's important about these ARP studs? The factory bolts are torque to yield, meaning they are purposefully stretched after one use, and cannot be safely reused. These ARP studs can be used countless times in multiple engine builds, provided they are not stretched. Studs also give you a more solid clamping force over bolts. Check out the excerpt from ARP's catalog for an explanation we have in the pictures! 

For those looking to run more boost, more power, or just want added safety, we have also developed an ARP2000 version of our head stud kits! The added tensile strength of the ARP2000 material lets you torque the studs down further, giving you even more protection from lifting the heads and/or blowing a head gasket.

You should not have to shave the head studs down for the scissor gears for the cams. We include washers for non-VVTi applications to make installation easier.