My Account
Shopping Cart

ARP 100-1202 Exhaust Header Bolt Kit 3/8" 12-Point Chrome Moly

Manufacturer

ARP

<h3>The Gold Standard in Performance Fasteners</h3> <p>When racing enthusiast Gary Holzapfel recognized that fastener failure was causing many engine breakdowns in 1968, he founded Automotive Racing Products (ARP) to solve a critical problem in motorsports. Drawing on his aerospace fastener manufacturing experience, Holzapfel created a company that would revolutionize the performance fastener industry. Today, ARP stands as the world's premier manufacturer of high-strength bolts, studs, nuts, and specialized hardware for racing and high-performance applications.</p> <p>ARP controls all aspects of the manufacturing process in-house, with all operations closely monitored, enabling the company to maintain its reputation for zero-defect quality. Every fastener undergoes forging, heat treatment, thread rolling, and precision finishing at ARP's Southern California facilities, which span over 115,000 square feet. This vertically integrated approach ensures that each component meets exacting standards for strength, fatigue resistance, and reliability under extreme conditions.</p> <h3>Engineered for Championship Performance</h3> <p>ARP's customer roster reads like a who's who of professional motorsports. The product line ranges from quality high-performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications. The company's fasteners have secured victories in virtually every major racing championship worldwide, from Top Fuel dragsters to Formula One cars, proving their worth under the most demanding conditions imaginable.</p> <p>The brand's <a href="/48-arp-engine-cylinder-head-bolt-set-10306">engine cylinder head bolt sets</a> represent the cornerstone of ARP's catalog, offering engine builders the clamping force and reliability needed to prevent head gasket failure in high-boost and high-compression applications. These precision-engineered fasteners utilize proprietary materials and heat treatments that deliver up to ten times the fatigue strength of conventional bolts, making them essential for any serious performance build.</p> <p>For engine internals, ARP manufactures <a href="/48-arp-engine-connecting-rod-5276">connecting rods</a> designed to withstand extreme cylinder pressures and high RPM loads. Each rod is manufactured to aerospace standards with tight tolerances and superior material properties. Whether you're building a street performance engine or a full competition powerplant, ARP connecting rods provide the strength and consistency that professional engine builders demand.</p> <h3>Complete Fastener Solutions</h3> <p>Beyond engine components, ARP's product range extends throughout the entire vehicle. The company's <a href="/48-arp-wheel-lug-stud-7680">wheel lug studs</a> offer critical safety and performance benefits for racing and high-performance street applications, providing greater clamping force and durability than factory studs. ARP's product line contains thousands of part numbers and has expanded to include virtually every fastener found in an engine and driveline.</p> <p>Individual <a href="/48-arp-engine-cylinder-head-bolt-5308">engine cylinder head bolts</a> are also available for custom applications or specific replacement needs, manufactured to the same exacting standards as complete sets. This flexibility allows builders to source exactly what they need for specialized builds or repairs without compromising on quality.</p> <p>What sets ARP apart is not just the breadth of their catalog, but their willingness to develop custom solutions for unique applications. The company maintains complete R&D capabilities, including metallurgical research, product design, prototype machining, and extensive laboratory testing. This engineering expertise ensures that whether you're installing a simple head stud kit or building a record-setting race engine, ARP fasteners deliver the reliability and performance that professionals trust.</p>

Part Number

100-1202
07/13/2036 1:05 PM
Sale Price

$19.84

In Stock (10+)

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's premium grade exhaust header bolt kit delivers exceptional strength and reliability for secure header installation. Manufactured from heat-treated 8740 chrome moly steel with a black oxide finish, these fasteners are engineered to ARP's exacting "zero defects" quality standards. With a tensile strength rating of 170,000 psi, they significantly outperform standard Grade 8 hardware, providing superior clamping force and durability in high-temperature exhaust applications.

Key Features:

  • Heat-treated 8740 chrome moly steel construction with black oxide finish
  • 170,000 psi tensile strength?substantially stronger than Grade 8 bolts
  • Compact 12-point head design for excellent wrench engagement in tight spaces
  • 3/8" diameter with 0.750" under-head length
  • 16-piece kit includes premium-quality hardened washers
  • Precision manufactured in-house with rigorous quality control

This complete bolt kit provides everything needed for professional-grade header installation, ensuring consistent clamping pressure and long-term reliability in demanding exhaust system applications.

Products specifications

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

0.75

Underhead Length (in)

0.750 in.

Underhead Length (mm)

19mm

fast shipping just what i ordered

For the over-the-winter garage storage of my 911, the Rail Ramps Flatstopper product has eliminated the need to move the car over the winter in order to avoid the tires developing flat spots.

Was good

GREAT PRICE, FAST DELIVERY, WILL BUY FROM AGAIN.

Best prices anywhere!! They take care of their customers, too!

These guys had a part that I was searching for for a long time. Not only that, but they had 2 in stock when nobody else did. I will definitely be looking here first next time I am buying auto parts.

Great price! Quick shipping. The intake I ordered was $20.00 cheaper than anywhere else I looked. Item was instock and shipped quick. Will order from Autoplicity again!

Autoplicity is really awesome. They deliver quick and have a great staff to help you out. Give them a chance!

Same day shipping. 20 Dollars cheaper than everywhere else!

Always great prices, fast shipping and great communication. Will order again from Autoplicity. Order#17421.

Share icon
Return Policy
Returns are easy at Boatplicity

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