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ARP 154-3601 High Performance Cylinder Head Bolt Kit 8740 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

154-3601
07/12/2036 11:45 AM
Sale Price

$65.77

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 154-3601 High Performance Series cylinder head bolt kit delivers professional-grade fastener technology for demanding engine builds. Manufactured from premium 8740 chrome moly steel and heat-treated to 180,000 psi tensile strength?15% stronger than Grade 8?these fasteners provide superior clamping force and reliability for high-performance applications.

Key Features:

  • 8740 chrome moly steel construction heat-treated to 180,000 psi
  • Hex head design with wide area flange for easy installation and retorquing
  • Reduced wrenching profile allows cylinder head service without valve train removal
  • Cold-forged manufacturing ensures molecular integrity and consistent quality
  • Thread rolled after heat treatment for superior fatigue resistance
  • Centerless ground for precise concentricity and proper head alignment
  • Includes hardened parallel-ground washers for even load distribution
  • Select applications feature undercut short bolts to equalize stretch and prevent head gasket failure

Manufacturing Excellence:

ARP's proprietary manufacturing process sets these fasteners apart from competitors. Each bolt is vertically rack heat-treated for complete penetration and uniform strength, then centerless ground through multiple precision cuts to ensure exceptional straightness. This exacting process allows cylinder heads and gaskets to align perfectly during assembly. Thread rolling is performed after heat treatment?a costly but critical step that delivers approximately ten times better fatigue strength compared to pre-heat-treat threading methods used by lesser manufacturers.

Installation Notes:

The wide-flange hex head design eliminates interference with valve train components, enabling cylinder head retorquing without disassembly. Always retorque fasteners after initial engine run-in to compensate for head gasket compression. Each kit includes hardened washers to ensure accurate torque readings and uniform clamping force across the cylinder head surface.

Trusted by professional engine builders across all forms of motorsports, ARP fasteners represent the pinnacle of cylinder head retention technology. Each component is stamped with the ARP logo as your assurance of zero-defect quality standards.

Products specifications

Cut to Fit

No

Fastener Finish

Black oxide

Fastener Material

Chromemoly

Fastener Style

Bolt

Head Style

Hex

Quantity

Sold as a kit.

Washers Included

Yes

Easy process

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Nice

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Excellent transaction, received item very quickly and it was a lot cheaper than any other online retailer that I was able to find, could not even find cheaper on e bay.

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