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ARP 190-3601 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

190-3601
07/13/2036 1:05 PM
Sale Price

$91.77

In Stock (5)

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Usually delivered within 2 days

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Product Details

The ARP 190-3601 High Performance Series cylinder head bolt kit delivers professional-grade fastening strength 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 fasteners?these head bolts provide the reliability and consistency required for high-performance applications.

Key Features:

  • Premium 8740 chrome moly steel construction rated at 180,000 psi tensile strength
  • Hex head design with wide area flange eliminates need for valve train removal during retorquing
  • Cold-forged for molecular integrity and superior fatigue resistance
  • Thread rolled after heat treatment for approximately 10 times better fatigue strength
  • Centerless ground to exacting tolerances for perfect alignment and easy assembly
  • Includes hardened parallel-ground washers for even load distribution and accurate torque readings
  • Undercut short bolts available in select applications to compensate for head gasket compression

ARP's precision manufacturing process ensures each fastener is vertically heat-treated for complete penetration and consistent strength. The centerless grinding process involves multiple precision cuts to produce exceptionally straight bolts that allow cylinder heads and gaskets to glide into perfect alignment. Thread rolling after heat treatment?rather than before?dramatically increases fatigue strength, though this process is significantly more expensive due to increased tooling wear.

The wide-flange hex head design is engineered for easy access and retorquing without disassembling valve train components, making maintenance faster and more convenient. Each kit includes hardened parallel-ground washers that ensure even clamping force distribution across the cylinder head surface and provide accurate torque readings during installation.

These head bolts are ideal for street performance and mild competition applications where superior strength and reliability are essential. ARP's commitment to zero-defect, zero-failure quality standards makes these fasteners the choice of professional engine builders across all forms of motorsports.

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

Smooth transaction, hopefully product will be great too.

Had what I was looking for, easy check out

Order number 18535 for a catalog rack. Best price on any searches I did. Shipped quickly. I would buy again.

My ARB 50qt fridge/freezer arrived quickly and it was way cheaper than anywhere else. I was a little leery only because of that. However, I received the fridge and saved about $65 over even Amazon. No problems.

Pricing was good and customer service quick to respond.

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