SpeedFactory Racing 4140 Head Stud Kit - D-series
SKU: 84931722575

SpeedFactory Racing 4140 Head Stud Kit - D-series

Sale price$159.80 Regular price$177.55
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

SpeedFactory Racing 4140 Head Stud Kit - D-seriesSpeedFactory is proud to introduce their new D Series Head Stud Kit that fits all variants! No more having to mix and match fasteners for various block and head combos the unique stud design fits all of them. Any combination of D15 or D16 block or head, non VTEC or VTEC, D16Z6 or D16Y8 heads or blocks, etc. The SpeedFactory Racing 4140 Head Stud Kit is great for most forced induction applications up to 600+HP and includes oversized forged nuts &

SpeedFactory is proud to introduce their new D-Series Head Stud Kit that fits all variants!

No more having to mix and match fasteners for various block and head combos - the unique stud design fits all of them. Any combination of D15 or D16 block or head, non-VTEC or VTEC, D16Z6 or D16Y8 heads or blocks, etc. 

The SpeedFactory Racing 4140 Head Stud Kit is great for most forced induction applications up to 600+HP and includes oversized forged nuts & washers for superior load distribution. A hex broach is incorporated on the top of the stud for ease of installation and a dog point end seats the stud in the block and preloads the fastener for consistent & accurate torquing.

  • 200,000 psi tensile rating, 10mm diameter
  • 5/32" Hex broach on the top of the stud for ease of installation
  • Dog point design for superior preload
  • Oversized forged 13mm 12-point nuts and hardened parallel ground washers for superior load distribution compared to the smaller 12mm nuts and washers most use
  • Direct drop-in replacement for OEM head bolts.
  • Corrosion-resistant black oxide coating
  • Each kit includes a complete set of x10pcs 4140 head studs, nuts, washers and ARP Ultra-Torque Assembly Lubricant.

Fitment:

  • All D Series
  • 1.5L SOHC (D15B1/D15B2/D15B6/D15B7)
  • 1.6L SOHC (D16A6/D16Z6/D16Y5/D16Y7/D16Y8)
  • 1.7L SOHC (D17A1/D17A2)
  • "Mini-Me" builds (D16Z6 or Y8 VTEC head on D15/D16 Non-VTEC block)
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: 84931722575

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sylvia
Louisville, US
★★★★★ 5
Good pillow case
Color: Dark Grey, Size: 1 Pack Body(20x54)-Regular
It’s a nice soft pillow case. Fits perfectly on my body pillow
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Reviewed in the United States on May 18, 2026
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MJ
Phoenix, US
★★★★★ 4
Cooling and comfortable against your skin
Color: Navy Blue, Size: 1 Pack Body(20x54)-Regular
Fits perfectly and feels nice against your skin. Just wish it had a zipper on the end. That would have made it perfect.
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Reviewed in the United States on June 8, 2026
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LegoDude
Boise, US
★★★★★ 5
I am stunned
Color: Black, Size: Queen(20x30)
I had no idea what to expect from these. But for as cheap as they were I was willing to just write it off of they weren't that good. I had already picked up a new memory foam pillow to replace my previous memory foam pillow that didn't do well with dissipating heat. This new pillow was fine by itself, but when I put my pillowcase on it, the properties that made it cooling were negated. I'd get a bit of sweat on the side of my head or my neck where it was against the pillow all night. The pillow was supposed to be a cool one, but the pillowcase was not. So I grabbed this set. Smooth, no loose threads anywhere, stitching and seams are all spot on. And it's smooth to the touch. Got it on the pillow, and as soon as I laid my head down on it, I could tell immediately that this was going to be a different result that my other one. Not nearly as warm even after laying on it for a while. No heat buildup, no bits of moisture on the skin after being on it all night. This definitely works well, especially with my cool sleep pillow. Now I can have a far more comfortable nights sleep. For the price, it's a steal. I have no idea what longevity will be, but with two of them, I'm sure I'll get more than my money's worth.
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Reviewed in the United States on August 7, 2023
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Mary Hales
Alexandria, US
★★★★★ 5
Soft and cooling
Color: Dark Grey, Size: 2 Pack Queen(20x30)-Regular
Soft, not too thick and wash very well. Feels great against my skin and doesn’t make my hair frizzy. Color was perfect.
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Reviewed in the United States on May 13, 2026
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Issyr
Los Angeles, US
★★★★★ 3
Not soft, not wrinkle free
Color: Light Grey, Size: 2 Pack King(20x36)-Regular, Color: Light Grey, Size: 2 Pack King(20x36)-Regular
Not as soft as expected. Major WRINKLED after washer/dryer. Always use max heat on dryer. Not as described. Money wasted.
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Reviewed in the United States on April 30, 2026

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