SKU: 28400945780

XDP X220 Series Head Stud Kit XD3006HS

Sale price$236.23 Regular price$262.48
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

XDP X220 Series Head Stud Kit XD3006HSThe XDP X220 Series Head Stud Kit XD3006HS is a must have for your high performance 2001 2016 GM 6. 6L Duramax LB7 LLY LBZ LMM LML. The OEM head bolts typically can't handle the pressure from high horsepower applications. Constructed using 8740 Chrome Moly with an added proprietary element ensures these studs are more durable and will not stretch like the factory bolts. The threads are rolled after heat treating to deliver optimum fatigue strength.

The XDP X220 Series Head Stud Kit XD3006HS is a must have for your high performance 2001-2016 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML. The OEM head bolts typically can't handle the pressure from high-horsepower applications.

Constructed using 8740 Chrome Moly with an added proprietary element ensures these studs are more durable and will not stretch like the factory bolts. The threads are rolled after heat-treating to deliver optimum fatigue strength.

These studs are rated at 220,000 plus psi tensile strength and 210,000 plus yield strength to keep your cylinder heads from lifting under higher combustion pressures.

A conventional bolt gets twisted as it is tightened, so it's reacting to two different forces at the same time. With a stud the force gets applied to the vertical axis, resulting in a more even clamping force which allows you to obtain a more accurate torque reading.

These studs are a must-have for high-horsepower applications and are reusable, unlike the OEM Torque-To-Yield (TTY) bolts which must be replaced after each use. Another benefit of studs is they provide for easier engine assembly and proper alignment of the cylinder heads every time.

These studs are manufactured in an ISO/TS 16949 quality control facility. Includes installation instructions for a hassle-free installation.

Features:

  • Includes Washers and 12 Point Nuts
  • Yield Strength 210K psi - 230K psi
  • Tensile Strength 220K psi - 236K psi
  • Will Not Stretch Like The Factory Studs
  • Thread Has Been Rolled After Heat Treatment
  • High-Strength 8740 Chrome Moly Construction
  • 10mm Studs Test Out At A Max Load: Over 120KN
  • Manufactured In An ISO/TS 16949 Quality Control Factory
  • Reusable Compared To Torque-To-Yield (TTY) Bolts Which Are One Time Use Only

XDP Thread Cleaning Chasers (Sold Separately):
The XD40124TC and XD40128TC are a great add-on that will be critical during installation. Thread Cleaning Chasers are an excellent tool to have on-hand to ensure you have properly cleaned the threads in your engine block before the installation of any fasteners. Clean threads provide accurate torque readings and will help give you peace of mind during your engine build or head gasket repair.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 28400945780

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Jc
Chelsea, US
★★★★★ 5
great
Color: Black
Excellent chair for shorter users! The seat height and lumbar support fit perfectly, providing great comfort even after long hours of work. The PU leather looks sleek and is easy to clean. The wheels roll smoothly, and the 360° swivel works perfectly. Assembly was simple and quick. Great quality and amazing value for the price. Highly recommended!
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Reviewed in the United States on March 2, 2026
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yanwu zhang
San Leandro, US
★★★★★ 5
Very sturdy
Color: Black, Color: Black
Good comfort level ✔ The seat cushion is soft but doesn't sag, and the armrests also provide some cushioning. Easy to clean ✔ The leather surface can be easily wiped clean with a damp cloth, making it ideal for use on tables with drinks or snacks. Simple installation, clear instructions "The cushions on the chair back and armrests are soft enough, not too hard. It offers good value for money; the price is reasonable, but the seating comfort is better than I expected. "Suitable for daily office work or study." The seat cushion is very comfortable, and the back support is excellent. Adjustable height, smooth The chair is sturdy No shaking
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Reviewed in the United States on March 4, 2026
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Philip Tam
Belleville, US
★★★★★ 5
Comfortable chair
Color: Black, Color: Black
I wanted an all black out chair to match my cabinets and this chair fits my needs. It was easy to install took me about 20mins or so. Quality is great, the base is made out of metal hence very solid, it came with the polyurethane wheels, rolling on the hardwood floor is very smooth. Seat and arm rest have thick foam paddings makes it very comfortable to seat on and lean back. Adjustable recline tension and height adjustment. Great chair.
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Reviewed in the United States on April 25, 2026
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ElyGar
Louisville, US
★★★★★ 5
GOOD
Color: Black
The chair was more comfortable than I expected for the price. The back support feels good and the seat does not feel hard after working for several hours. I liked that the wheels roll smoothly and the assembly was pretty simple. The design also makes the office look more modern. So far it feels stable and durable.
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Reviewed in the United States on May 28, 2026
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jerry
Battle Creek, US
★★★★★ 4
Back is a little low
Color: Black, Color: Black
Comfort is good went together with no problems
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Reviewed in the United States on May 26, 2026

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