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Main Stud Replacement Kit for 6.6L Chevrolet Duramax 2001-2005 LB7 LLY - Xotic Performance™ MP877

4.4 (6) Write Review
Free shipping on orders over $29.99

$219.79

$ 99 .00 $99.00

In Stock

About this item

  • DIRECT FIT REPLACEMENT - Fits Ford PowerStroke 6.6L Chevrolet Duramax 2001-2005 LB7 LLY engines. Please see vehicle compatibilities tab above to ensure accurate fitment.
  • *DISCLAIMER* - These are main studs, not head studs. For head studs, please check our catalog.
  • ULTRA STRENGTH - Utilizing XOTIC 7200 material, these main studs offer superior tensile strength compared to standard 8740 chromoly steel. Rated at 220,000 psi tensile strength, these studs provide significantly enhanced clamping forces, surpassing those of standard bolts.
  • PREVENTS MAIN CAP SHIFTING - Main studs provide enhanced cap alignment, reducing the risk of main cap walking or shifting under extreme loads. Unlike bolts, studs remain stationary, offering better thread engagement and longevity.
  • EASY INSTALLATION - Broached stud ends allow for easier and more precise installation. Includes a detailed instruction manual with diagrams for a seamless setup.
  • COMPLETE KIT WITH ACCESSORIES - 10x M14 Main Studs, 10x Nuts, 10x Washers, 10x M12 Torx Bolts, 1x Allen Wrench, 1x Fastener Assembly Lubricant, and 2x Sockets — everything needed for a hassle-free installation.
  • MAIN STUDS - These are main studs, not head studs. Main and head studs serve different purposes—selecting the right one is crucial. For head studs, search more in our catalog.


Product Description

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strong
seamless
seal
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Metallurgy & Failure Analysis

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Join us on a journey through precision engineering and see firsthand how our head studs stand up to the ultimate tests. This isn't just about parts; it's about power, endurance, and the relentless pursuit of performance.


Jason Cox
July 4, 2025
The studs have good threads, made of quality material and are straight.
Brendon
June 19, 2025
Don’t waist your money on thinking it’ll work for your lly the studs are the wrong size their too big
Aliviana York 2.0
March 21, 2025
The Bearded Lady sez, I overhauled a farm truck (well, I paid a machine shop to do the engine work and I installed it) and had these installed and the mains bores align honed. They main studs are a solid upgrade, probably not necessary in my engine but one less thing to worry about. The engine will definelty outlast the truck.They come with the lubricant, allen wrench, and socket but they don't have the manufacturer Logo or ID, or the steel grade stamped into the hardware the way Arp would.
Zann
March 5, 2025
These stud replacements are actually pretty darn good. They're very well made with no misaligned sections or poorly designed areas. They seems to be EXTREMELY solid, which I obviously appreciate.This is a good value, and I have zero concerns about them not lasting or causing engine issues.
Customer
December 26, 2024
This brand has always exceeded my expectations in build quality! Great product for the price, I have no doubts these shocks will last as long as they're on the car. Every part of them is manufactured in a rigorous manner. 5/5!
Sparky
December 1, 2024
I could not be happier with this stud kit.Studs and nuts have a good weight to them, have nice threads and a good finish.All in all everything feels well made and of a good quality. I would buy them again. 5 STARS