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ARP 100-1109 Exhaust Header Bolt Kit 3/8" Chrome Moly 12pc

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

100-1109
5 reviews
03/12/2036 4:54 AM
Sale Price

$15.50

In Stock (10+)

delivery box

Usually delivered within 2 days

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Product Details

ARP's 100-1109 exhaust header bolt kit provides high-strength fasteners engineered specifically for secure header installation. Manufactured in-house from heat-treated 8740 chrome moly steel, these premium bolts deliver exceptional quality and reliability for performance exhaust systems.

Key Features:

  • Heat-treated 8740 chrome moly steel construction with black oxide finish
  • Rated at 170,000 PSI tensile strength—significantly stronger than Grade 8 hardware
  • 3/8" diameter bolts with traditional hex head design
  • 1.000" under head length for proper header mounting
  • 12-piece kit includes premium-quality hardened washers
  • Precision manufactured with ARP's strict quality control standards

ARP controls every aspect of the manufacturing process to ensure zero-defect performance. These header bolts resist stripping and provide consistent clamping force to prevent exhaust leaks, making them ideal for street, strip, and high-performance applications.

Products specifications

Fastener Finish

Black oxide

Fastener Material

Steel

Fastener Style

Bolt

Head Style

Hex

Material

Black Oxide

Notes

5/16 wrench head size.

Quantity

Sold as a set of 12.

Size

3/8

Thread Size

3/8-16 in.

UHL

1

Underhead Length (in)

1.000 in.

Underhead Length (mm)

25mm

thanks

I paid for 2nd day shipping and 5 days later they were shipped out. So, I should receive my rotors in a full week from when I paid for 2 day shipping. I called customer service and they discounted the shipping rate to ground service. At least they were polite and helpful in the phone.

Great prices will shop here again.

Excellent on-line merchant with outstanding customer service and the best prices on equipment and shipping. Highly reccomended!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

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