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ARP 400-1201 Header Bolt Kit 12-Point Stainless Steel 12-Piece

Manufacturer

ARP

<p>Today, ARP&rsquo;s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.</p>

Picture for manufacturer ARP

Part Number

400-1201
13 reviews
03/14/2036 8:04 AM
Sale Price

$20.81

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The ARP 400-1201 is a premium 12-piece header bolt kit designed for high-performance exhaust header installation. Each bolt features a 12-point head design that allows easy socket access in tight spaces around exhaust pipes.

Key Features:

  • 12-point head design for superior wrench access and grip
  • Constructed from Stainless 300 material for exceptional corrosion and heat resistance
  • Rated at 170,000 psi tensile strength, exceeding Grade 8 hardware specifications
  • Includes premium-quality washers for proper installation
  • Complete kit with 12 pieces for your application
  • Ideal for extreme heat and corrosive exhaust environments

ARP's Stainless 300 material ensures long-lasting durability even under the most demanding conditions. The compact 12-point head configuration provides multiple wrench positions, making installation and removal easier in confined engine compartments. Each component is precision-engineered to deliver reliable clamping force and resist loosening from vibration and thermal cycling.

Products specifications

Fastener Finish

Polished

Fastener Material

Stainless steel

Fastener Style

Bolt

Head Style

12-point

Notes

3/8 in. wrench head size.

Quantity

Sold as a set of 12.

Size

3/8

Thread Size

3/8-16 in.

UHL

0.75

Underhead Length (in)

0.750 in.

Underhead Length (mm)

19mm

The part was a direct fit, took 15 minutes and worked perfect.

Thank you

fast service but the box was all messed up+ held together with tape

I will buy all my exhaust needs here.

My order was delivered on time without any issues.

Fast and easy

Definitely the best price that I found for the part that I needed! Customer service was helpful and I got the piece FAST! Thank you so much!

First off, I LOVE my new shipments! These guys had everything at super low prices, and the shipping was phenomenally fast. It's all working great, and imm definitely buying from these guys again.

Seller had the best price online for the item I wanted! Responded to emails within 24 hours as stated, and sent me my tracking info as soon as part shipped. Thanks Autoplicity!

Easy checkout process.

Ordered a Trac-Bar from Autoplicity, and didn't have any problems. WILL be back!

Fast Shipping and best price around!Will buy thier again order#7585

Product (Dee-Zee nerf bars) was exactly as advertised. Buying experience was great. I did contact customer service via email to find out the shipping information. They were very helpful and replied within a few hours.

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