9 Piece M8 x 1.25mm x 45mm High Tensile Alloy Steel Exhaust Manifold Stud Kit

Lowest Prices & Guaranteed to Ship Within 24 hours of Ordering!

Designed for extreme and high temperature applications where failure is not an option!


Features:

With a class 12.9 rating and a minimum tensile strength of 1220N/mm2 (176,000+ PSI), these extended studs will blow your mind and surprisingly not your wallet!


Just like our popular InoX stainless studs, these feature a 4mm hex drive in the tip which allows installation with nothing more than a mere Allen wrench, how cool is that?


The nuts are crafted with a built in washer that has serrations on the bottom to resist loosening due to vibrations. This built in washer provides the nuts with a larger surface area for greater clamping pressure to insure a tight fit between your manifold or header and your cylinder head. Better clamping pressure insures a tight and leak free fit for years to come and extended gasket life.


Why only a class 10.9 nut, why not a 12.9 or higher?

This is a question that we've been asked on several occasions. By using a lower class nut on the higher class stud, this insures that in the event the nut needs to be removed or is over torqued by accident, the threads on the nut will be damaged, not the stud. A damaged nut is easier, faster, and cheaper to replace than a stud. We've put a lot of time and thought into the design and development of our kits and we believe it shows!


Obsidian 9 Piece Kit Includes

 • Nine Obsidian manifold studs (Class 12.9 alloy steel; M8 x 1.25mm x 45mm)

 • Nine Obsidian nuts (Class 10.9 alloy steel; M8 x 1.25mm)

 • One 2 gram pouch Loctite C5-A Copper Anti Seize

 • Easy to follow instructions

Shipping - US & International
We provide FREE standard shipping within the lower 48 US States. Discounted expedited shipping is available on most orders at time of checkout. We ship worldwide! If your location is not listed, please contact us for a shipping quote. For large or heavy items, we ship via FedEx or UPS to a valid street or business address only, NO P.O. Boxes. We will not be responsible for the payment of any import duty, tax, or VAT fees under any circumstances. You, the buyer, are solely responsible for any of these fees associated with importing the item(s) into or within your country.
Return Policy
Our return policy is very simply, if you don’t like it or no longer need the item, return it to us within 30 days for a full refund! Zero restocking fee! Buyer is responsible for all return shipping fees.
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