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.
Please note that you may have to shave 2 of the head studs down for each head a small amount for the scissor gears for the cams. This is most commonly an issue with non-VVTi 1UZs
Customers outside the USA: please contact us for a shipping quote to your location. The automatic shipping calculator might not be accurate
- Shipping info
We deliver worldwide
- Payment methods
- Return Policy
We accept returns
- Weight6 lbs
- Dimensions (L x W x H)10 x 10 x 10 in
- ManufacturerXAT Racing
- Engine1UZ/3UZ, 2UZ, 5-044
- Complete kit?Head Studs only, HSK and 1UZ VVTi/3UZ Main Studs, HSK and 1UZ non-VVTi Main Studs, HSK and 2UZ Main Studs
- Head Stud MaterialStandard ARP 8740 (800 HP capable), Upgrade to ARP2000 (over 800 HP)
Most product ships from either the manufacture or largest wholesale location to pass the saving to you. Most orders will ship via UPS, as we will be able to provide the best rates and have had the least issues when using UPS.
IF YOU DO NOT LIKE THE AUTOMATED SHIPPING CALCULATOR'S RATES, PLEASE CONTACT US AND WE CAN GET YOU A BETTER ONE! Especially for anyone outside the USA, please contact us with a list of parts you'd like to order, and where you are located.
- Fitment TypeVehicle Specific
|1989-1994 UCF10/11 LS400/Celsior
|1UZ-FE 4.0 V8 non-VVTi
|1998-2000 UCF20/21 LS400/Celsior
|1UZ-FE VVTi 4.0 V8
|2001-2005 UCF30 LS430/Celsior
|3UZ-FE 4.3 V8
|1UZ VVTi 4.0 V8 (1998-2000) UZS160
|3UZ 4.3 V8 (2001-2005) UZS161
|1UZ-FE 4.0 V8 (UZS151, UZS155, UZS157)
|1UZ-FE VVTi 4.0 V8 UZZ30 (1998-2000)
|1UZ-FE non-VVTi 4.0 V8 UZZ30 (92-97)/31/32
|2007-2021 2nd Gen
|2UZ-FE 4.7 V8
|2000-2006 1st Gen
|2UZ-FE 4.7 V8