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Product Description
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INDESTRUCTIBLE TENSILE STRENGTHRated at 220,000 psi tensile strength. Threads rolled after heat treatment for optimum fatigue strength. Premium quality inspection standards ensure you'll never get blown head gaskets again. |
OPTIMUM DESIGNBroached stud ends install & make cylinder head removal easier. Installation manual is included with drawn diagrams to ease the installation process. |
ULTRA CLAMPING FORCEHead studs are designed to retain cylinder seal even with today's extreme high pressure turbo systems. These studs far exceed clamping forces provided by standard Ford head bolts. |
NUTS & WASHERS INCLUDEDHardened parallel washers allow for uniform load distribution and accurate torque readings. |
Head studs vs Head Bolts
In every diesel car, there are high cylinder pressures that can damage head gaskets. Factory OEM head bolts are torque to yield, meaning you torque the bolt to a specific torque with a final 90 degree rotation that will place the bolt at its’ maximum stretch point.
Our observation through years of inspecting and repairing diesel trucks is that when you add parts that increase horsepower (turbocharger, injectors, chips etc.), you risk creating higher cylinder pressures lower than your RPM range, consequently leading to a blown head gasket.
In contrast to head bolts, head studs are engineered to not stretch. Xotic Performance head studs are created using premium steel alloys (XOTIC 7200) that are superior in tensile strength to a bolt. Our studs are threaded on top to allow for nut placement which will result in a more accurate torque of the head.
Rather than blowing your head gasket again, we highly recommend replacing your head gaskets with fasteners that have a proven track record of not stretching - so that you never have to deal with the exhaustive procedure of replacing another failed head gasket.
Your Vehicle Deserves Better.
Xotic Performance was founded with the intention to fill the gap in the market for unwavering high quality auto parts. Too often auto parts stores sell ‘cheap and cheerful’ products that are worth only their weight as scrap. We intend to change that by supplying only the very best performance parts.
Installation Instructions Included with Drawn Diagrams
- Use a thread sealer to lubricate block threads of the head studs (only applies if the cylinder head studs extend into the water jacket).
- Screw studs as tight as can be made finger tight (no tool necessary), and install cylinder head.
- Using THE FASTENER ASSEMBLY LUBRICANT included in the package, lubricate the head studs (ensure nuts and washers are lubricated as well).
- Install the lubricated nuts and washer onto the head stud as tight as can be made finger tight (no tool necessary).
- Using the torque recommendations in the manual, tighten the cylinder head bolts in 3 equal steps.
Customer reviews
Top reviews from other countries
Logan K. (Luckkide)
Amazing headstud kit without paying more than needed
Reviewed in the United States on November 9, 2020Verified Purchase
Logan K. (Luckkide)
Reviewed in the United States on November 9, 2020
First, these were incredible for the value, the way everything is packaged individually, they keep the 6 studs for the exhaust side separate from the factory, you don't have to dig around and hope you have the right 6. It all felt extremely high quality, to the point I was hoping it wasnt all just for show.
It had everything I needed, every stud, washer, nut, lubricant, instructions, etc. The instructions were very clear and even the paper they are wrote on feels laminated-ish, so no oil or grease will make it un readable and junk during the process if you are constantly messing with it.
Everything installed flawlessly, zero issues. Now the only thing I will say that is maybe a tiny tiny downside is, they dont go into or show in great detail about trimming the rear rocker arm cover to fit the stud/nut, but you shouldn't pass these up because of that, overall superb headstud kit, I highly recommend.
Images in this review
alyssa grimes
Best Buy for the money
Reviewed in the United States on November 27, 2019Verified Purchase
alyssa grimes
Reviewed in the United States on November 27, 2019
Images in this review
Annette Littleton
Great value and amazing customer service
Reviewed in the United States on January 21, 2021Verified Purchase
Benton L
These are as good as the ARPs. They hold 145 pounds.
Reviewed in the United States on March 23, 2022Verified Purchase
Matt
QUALITY and value get them before price doubles
Reviewed in the United States on April 25, 2020Verified Purchase
