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ARP 134-1202 Header Bolt Kit for LS Small Block Chevy Gen III

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

134-1202
07/13/2036 5:49 AM
Sale Price

$32.50

In Stock (5)

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 134-1202 header bolt kit is specifically engineered for Small Block Chevy Gen III LS Series engines with 3/8" wide header flanges. These premium fasteners ensure secure, reliable header installation that withstands extreme temperatures and repeated thermal cycling.

Superior Materials and Construction:

  • Available in stainless steel or black oxide finish 8740 chrome moly steel
  • Rated at 170,000 psi tensile strength for exceptional clamping force
  • Stainless 300 material resists corrosion and extreme heat
  • 12-point head design allows easy socket access in tight spaces near exhaust pipes

Kit Specifications:

  • M8 x 1.181" thread size and length
  • 12-point head configuration
  • Includes 12 bolts with premium-quality washers and nuts
  • Designed for 3/8" wide header flanges

Each complete kit contains the exact number of fasteners needed for your LS application, plus all necessary hardware. ARP's precision manufacturing ensures consistent torque values and eliminates the risk of bolt failure that can lead to exhaust leaks and potential engine damage.

Products specifications

Fastener Finish

Black oxide

Fastener Material

Steel

Fastener Style

Bolt

Head Style

12-point

Quantity

Sold as a set of 16.

Underhead Length (mm)

25.00mm

Shipped on time after being put off by another vendor

Good service,delivery was on time.

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Easy shopping and fast checkout, but this isn't the part I needed...

Lowest prices I found on the net and great customer service! Fast shipping too!

Ordered Borla headers 17216 that was lowest price on internet. Shipped fast at a fair price and arrived in good condition. Communication from Autoplicity was timley and accurate with tracking number. I would not hesitate to order from them again.

Excellent product and fast service!! Great seller with great products!! Fast shipping, no hassles!! AAA+++

good prices.

There.was a bit of miscommunication between sales and shipping departments, but my order was filled and shipped as stated. Very low price, in fact the lowest on the net, and I did alot of research. Other than the shipping issue, I'm very satisfied and will buy more parts from them soon. Thank you!!!

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