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ARP 434-1202 Stainless Steel Header Bolt Kit LS Small Block Chevy M8 12-Point

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

434-1202
07/12/2036 4:23 AM
Sale Price

$49.21

4 left at this price

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

ARP's premium stainless steel header bolt kit is engineered specifically for Small Block Chevy Gen III LS Series engines with 3/8" wide header flanges. These fasteners utilize Stainless 300 material that resists corrosion and withstands extreme exhaust temperatures, making them ideal for high-performance header installations.

Key Features:

  • Stainless 300 material rated at 170,000 psi tensile strength
  • 12-point head design allows socket placement close to exhaust pipes in tight spaces
  • M8 x 1.181" thread specification
  • Includes premium-quality washers and 12-point nuts
  • Corrosion-resistant for long-lasting performance in harsh exhaust environments
  • Complete kit with 12 pieces for proper header installation

The compact 12-point nut configuration provides superior wrench engagement and makes installation easier in confined engine bay areas. Each bolt is manufactured to ARP's exacting standards, ensuring consistent quality and reliable clamping force to keep your headers securely mounted.

Products specifications

Fastener Finish

Polished

Fastener Material

Stainless steel

Fastener Style

Bolt

Head Style

12-point

Quantity

Sold as a set of 12.

Underhead Length (mm)

25.00mm

it was easy to find a part that claims it fits

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The experience was great. Came on time. Works like a charm.

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Very satisfied with delivery time and product. Would order again if the need arises.

fast service

good so far....

very easy checkout..

Found what I needed. Order process was simple enough. Good experience

Lowest price and quick turn-around on the order! 1-800 support (for tech info) was prompt, courteous, and helpful for the part I was ordering.

Great website. It is cheap and provides relatively fast shipping.

Easy to find what I neededpart worked perfectly.

Easy to find product I need and easy to check out.

Good

The sales/service team were very helpful and they had the cheapest price for an air filter that I could find. I will definitely shop here again!

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