My Account
Shopping Cart

ARP 190-3602 Cylinder Head Fasteners High Performance 8740 Series Hex Head Bolts

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

190-3602
07/13/2036 7:48 AM
Sale Price

$98.84

3 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 190-3602 cylinder head fastener kit delivers professional-grade reliability for high-performance engine builds. These hex head bolts are engineered from premium 8740 chrome moly steel and heat-treated to 180,000 psi tensile strength?15% stronger than Grade 8 fasteners?providing superior clamping force and resistance to failure under extreme conditions.

Key Features:

  • Premium 8740 chrome moly steel construction for exceptional strength and durability
  • Heat-treated to 180,000 psi tensile strength for reliable performance under high cylinder pressures
  • Hex head design with reduced wrenching profile and wide-area flange for easy installation
  • Thread rolled after heat treatment for superior fatigue resistance and thread integrity
  • Includes hardened, parallel-ground washers for even load distribution and accurate torque readings
  • Allows cylinder head retorquing without valve train removal
  • Centerless ground for precise concentricity and perfect alignment during assembly

Manufacturing Excellence:

ARP employs precision manufacturing processes that set these fasteners apart from the competition. Each bolt is vertically rack heat-treated to ensure complete and uniform heat penetration throughout the material. Following heat treatment, the bolts are centerless ground through multiple precision cuts to achieve exceptional straightness and concentricity. Thread rolling is performed after heat treatment?a costly but critical process that increases fatigue strength by up to ten times compared to pre-heat-treat threading methods.

Installation Benefits:

The reduced hex head design and wide-area flange allow for cylinder head service without removing valve train components, saving valuable time during engine maintenance. The precision manufacturing ensures that cylinder heads and gaskets align perfectly during assembly, eliminating the frustration of misalignment common with inferior fasteners. Each kit includes hardened washers that are parallel-ground to provide consistent torque readings and uniform clamping force across all fasteners.

Application Note:

Head bolts are ideal for applications where engine bay clearance is limited or where cylinder head removal with the engine installed is necessary. For optimal results, always follow ARP's torque specifications and re-torque fasteners after initial engine run-in to compensate for head gasket compression.

Trusted by professional engine builders across all forms of motorsport, ARP fasteners represent the gold standard in engine assembly hardware. Each component is manufactured to ARP's zero-defect, zero-failure quality standard, ensuring your engine build starts with the most reliable foundation possible.

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

found the part I was looking for easily and the price was better than their competitors.

Good. Not bad.

What is the cleaning instructions on these? These are hard to find anymore and fit my son's old truck perfectly!

Very good to deal with very good customer service

Great site to order from

You had what we needed at an affordable price.

Ordered a Kirkey seat from them. They had the lowest price I could find and shipped that day. Ordered on Friday and received on Tuesday. It was well packed and perfect. I'd certainly do business with them again.<br>

Best prices that I have seen. I bought some Bilstein 5100 adjustables, got the with in 4 business days. No problem at all. Will buy from Autoplicity.com again.

This was my first order with Autoplicity. Not only did they have the products I wanted at the lowest price, but they offered the best service and lightning fast shipping!!!

Great prices and fast shipping.

Fast and inexpensive. Thanks.

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