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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
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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:
- 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
4.2 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Love it, happy with the price
Size: 1 Panel, Color: Black
I have been using this product for a month now. I'm absolutely thrilled with my new Room Divider. It's has made a significant difference in my home. The divider is not only stylish and well-crafted but also incredibly functional. It has effectively separated my open space into cozy, distinct areas, enhancing privacy. Assembly was a breeze, and it's built to last. This room divider has truly transformed my living space, and I couldn't be happier.
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Reviewed in the United States on December 30, 2024
★★★★★ 4
Privacy panels
Size: 4 Panel, Color: Black
They're well made,fabric is fairly thick but the wording had me thinking i was buying 4 sets of 4 panels instead of just 4 panels. My fault i guess.....
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Reviewed in the United States on August 18, 2025
★★★★★ 5
Looks great
Size: 1 Panel, Color: Black
Easy set up works great.
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Reviewed in the United States on March 6, 2026
★★★★★ 5
Versatile Room Divider With Easy Assembly and Strong Coverage
Size: 3 Panel 12FT W
I picked up this Siebwin 3-panel folding room divider mainly for privacy and room separation, and overall it works very well.
Assembly is very straightforward, and the divider can be set up, taken apart, and stored without much effort. The fabric quality feels good, and the frame construction is stronger and more stable than expected. The support tubes especially feel well built and help keep the divider standing securely.
One feature I really liked is the flexibility of the design. The panels can be used together as a complete divider or separated depending on the setup and available space. That makes it much more versatile for different room layouts or temporary privacy needs.
The coverage is also very good, and the size matches the manufacturer’s description accurately. The fabric blocks light and background visibility well enough to provide solid privacy without feeling overly heavy. The wider feet also help improve stability compared to thinner folding dividers.
Another positive detail is that everything arrived complete with no missing parts or damaged pieces, which made assembly much easier and faster.
Compared to cheaper privacy screens, this one feels more durable and easier to customize depending on the situation. In terms of value for the money, it feels like a very practical and worthwhile purchase considering the size, flexibility, and build quality.
Overall, a versatile and well-built room divider with easy assembly, strong privacy coverage, stable construction, complete included parts, flexible panel configuration, and excellent everyday functionality.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Stable, flexible in deployment configuration, creates true privacy and looks great.
Size: 3 Panel 12FT W
This is the second room divider panel I have installed, and there are several features about this one that I like much better than my older one.
The fact that there are no gaps and that the material is thicker means you get more privacy or more hiding power, if you wish. My older divider has vertical spaces between each of the panels and the panels are half as wide as the Siebwin panels, so there are many vertical spaces. The Siebwin divider really creates privacy.
Another feature that I really appreciate is that the legs are wider and stand off from the floor. On my older one the legs are flat and they're rather awkward to adjust because they create more drag on the floor. The feet on the older one also loosen if you turn them counter clockwise, so adjustments of configuration that require the feet to be moved are more complex.
The older divider also must be deployed in a zig-zag fashion because he feet are not as wide, but this new one can be deployed and stable in a straight, an "N" shape or an arc. They are both the same length, but because the older one must be use in a zig-zag deployment it doesn't reach to the length of the new one.
The Siebwin divider definitely costs more at $103.48, but it sports several features and advantages over the other brand, so it does a better job and is worth the extra cost.
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Reviewed in the United States on May 25, 2026