My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

ARP 100-1212 Header Bolts 12-Point Head 16-Piece Kit

(Chevrolet Camaro 1967-72, Corvette 1965-74, 2006-07, Impala 1963, 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73 + 45 more models)

Manufacturer

Picture for manufacturer ARP

Part Number

100-1212
19 reviews
Sale Price

$26.44

In Stock (7)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 100-1212 is a premium header bolt kit designed for secure, reliable exhaust header installation. This 16-piece kit features 12-point head bolts manufactured from high-grade materials for superior strength and durability in high-heat applications.

Key Features:

  • 16-piece bolt kit for complete header installation
  • 12-point head design allows easy socket access in tight spaces near exhaust pipes
  • Available in black oxide chrome moly or Stainless 300 material
  • Rated at 170,000 psi tensile strength—significantly stronger than Grade 8 hardware
  • Stainless 300 option resists corrosion and extreme heat
  • Includes premium-quality washers and nuts as required
  • NASCAR drilled models available for safety wire applications

ARP header bolts are engineered to withstand the demanding conditions of high-performance exhaust systems. The 12-point design provides better grip and allows installation in confined spaces where standard hex heads cannot fit. Whether you're building a street machine or race engine, these bolts deliver the strength and reliability required for secure header mounting that won't loosen under thermal cycling and vibration.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1965-74, 2006-07, Impala 1963, 1965-76, Malibu 1966-67, 1973-75, C1500 1990-93, Chevelle 1965-73, Blazer 1973, C10 Pickup 1968-80, Caprice 1966-76, El Camino 1966-75, K2500 1991-2000, Nova 1970 + 39 more models

Fastener Finish

Black oxide

Fastener Material

Steel

Fastener Style

Bolt

Head Style

12-point

Material

Black Oxide

Notes

3/8 in. wrench head size.

Quantity

Sold as a set of 16.

Size

3/8

Thread Size

3/8-16 in.

UHL

1

Underhead Length (in)

1.000 in.

Underhead Length (mm)

25mm

no comment

Great price

OVERALL EXPERIENCE VERY SATISFYING.

Everything went very well. Thanks for the opportunity to comment.

Great price and fast service

Haven't fitted them to my truck, my size is not listed on the bag but they are adjustable to a point.

easy shopping

I have ordered from Autoplicity several times in the past and I will continue to be a repeat customer.

Very simple checkout

I bought an Exedy Organic Clutch at the best price I could find. Shipping was also prompt. Legit dealer, good business.

Great Price!!<br>Fast Shipping!!<br>Would definitely use again....

Once i installed the BULLY DOG GT TRIPPLE DOG GAS TUNER PROGRAMER on my newerbody style 07 gmc sierra 1500, My mpg average went from 12 to 18. Instant improvement and performance. Not to mention the truck is lifted 7.5 in with 37 in tires. Easy programing settings takes minuets. The power the 5.3 puts out after my Bully Dog gas tuner was installed was fanominal. I will deff get my money back in fuel over about a year. Can't go wrong purchasing. This item. MUST HAVE PRODUCT.

Great deals at unbeatable prices!

Product was as described, shipping was fast, and communication was excellent. Plus I saved $$. Thanks Autoplicity! I'll be a repeat buyer and referral source.

Found a Thule Vertex bike hitch on here for $50 cheaper than amazon. Extremely fast shipping. Definitely recommend purchasing from here.

Great prices, reasonable shipping costs. Shipped within 3 days of order. Didn't receive discount for valid coupon code (25OffShipping). No response to 2 emails. No indication of expected delivery date. Lots of unknowns but you can't beat the pricing.

This was my first order with Autoplicity. I was pleasantly surprised when my order showed up quickly and was exactly what I wanted. I will be buying from this company again. Thanks for the quick service and fair pricing.

SO HAPPY! I have to admit, I was hesitant because I had never heard of autoplicity and there wasn't item a picture up for the Thule T2 rack I bought, but wow am I happy. Autopliicity had it for $100 less than other sites and the shipper was Amazon prime fast!!! Definitely a happy customer!!!!

I ordered a Thule 9002 Raceway Bike Carrier on Sunday, April 8 and received the product by Fedex on Wednesday, April 11 with just regular shipping. That is fast service. And the price was $43 cheaper than any other site on the internet (including shipping). I haven't had a chance to use the bike carrier yet but it appears to be new and as advertised with no issues as of this writing. I would definitely recommend this retailer for your next purchase. Order Number: 9111

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