My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

ARP 400-8001 Stainless Steel Accessory Studs Multi-Purpose - 8mm 4-Pack

Manufacturer

Part Number

400-8001
Sale Price

$41.87

In Stock (6)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

ARP 400-8001 stainless steel accessory studs provide a high-strength, corrosion-resistant fastening solution for exhaust systems, intake manifolds, and various other automotive applications. Manufactured from ARP's proprietary Stainless 300 alloy, these studs are rated at 170,000 psi tensile strength—significantly stronger than standard Grade 8 hardware—while remaining completely impervious to rust and corrosion.

Key Features:

  • 8mm diameter stainless steel studs with 170,000 psi tensile strength
  • Proprietary Stainless 300 alloy resists rust and corrosion
  • Unique nut starter nose for easy alignment and installation
  • Hex-broached tip allows installation with Allen wrench
  • Includes 12-point nuts for superior wrenching access in tight spaces
  • Flat washers included for proper load distribution

Ideal for header installation and other high-temperature applications where conventional fasteners quickly deteriorate. The hex-broached design simplifies installation in confined engine bay areas, while the 12-point nuts provide multiple engagement angles for easy tightening. This 4-piece kit provides professional-grade fastening performance with the corrosion resistance required for long-term reliability.

Products specifications

Base Thread Size

M8 x 1.25mm

Effective Stud Length (in)

1.250 in.

Fastener Finish

Polished

Fastener Material

ARP 300

Nut Finish

Polished

Nut Material

Stainless steel

Nut Style

12-point

Nuts Included

Yes

Quantity

Sold as a set of 4.

Size

M8 x 1.25 x 32mm (1.250in)

Top Thread Size

M8 x 1.25mm

Washers Included

Yes

........

so far so good

Fast and accurate

simple and easy

My items were delivered in a timely fashion and there were no damages to them. I will definitely buy more parts from these guys.

Always fast shipping.

Don't change a thing, its easy to navigate and the prices are great as well...

easy to deal with and best price found on the web

I can't comment on a transaction that is not complete until I get the part I need.

great pricing and waiting on delivery!

Prices were very fair, had to check back a few times to the listing to determine if item was sold in pairs and/or individually. Overall however the product looks good.

fast shipping and great communication my order was shipped the same day thanks autoplicity

I ordered this product and Wednesday in the morning and it was on my door step Thursday morning with regular shipping. The ordering process was super easy and the price was $35 cheaper than any other online retailer. The Rack is awesome, easy to assemble took me about 20 minutes by myself, put on my jeep hooked up the bikes and off I went, fantastic design, I highly recommend the Rola NV2 bike rack and highly recommend Autoplicity

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy