My Account
Shopping Cart

ARP 114-3602 Cylinder Head Fasteners High Performance 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

114-3602
07/12/2036 12:16 AM
Sale Price

$104.03

2 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 114-3602 is a high-performance cylinder head bolt kit engineered for demanding applications where reliability and strength are non-negotiable. Manufactured from premium 8740 chrome moly steel, these fasteners are heat-treated to 200,000 psi tensile strength?significantly exceeding aerospace-grade standards and 15% stronger than Grade 8 bolts.

Key Features:

  • Premium 8740 chrome moly alloy rated at 200,000 psi tensile strength
  • Hex head design with reduced wrenching profile and wide-area flange
  • Vertical rack heat-treatment ensures complete and uniform heat penetration
  • Thread rolled after heat-treat for superior fatigue strength
  • Centerless ground for exceptional concentricity and straightness
  • Includes hardened, parallel-ground washers for even load distribution
  • Wide-area flanged head eliminates need for valve train removal during retorquing
  • Select applications feature undercut short bolts to equalize stretch and prevent head gasket failure

Manufacturing Excellence:

ARP's exacting manufacturing process sets these fasteners apart from competitors. Each bolt is cold-forged to ensure molecular integrity, then placed vertically in precision racks for heat-treatment?not tumbled in baskets like lesser products. After heat-treat, bolts are centerless ground through approximately ten precise cuts to achieve near-perfect concentricity. This attention to detail ensures cylinder heads and gaskets align effortlessly during assembly.

Post-Heat-Treat Thread Rolling:

Unlike competitors who thread fasteners before heat-treatment when material is softer, ARP thread rolls after heat-treat. While this process is significantly more expensive and harder on tooling, it delivers approximately 1000% better fatigue strength?a critical advantage in high-stress applications.

Installation Notes:

The reduced wrenching hex and wide-area flange design allows cylinder head retorquing without removing valve train components, saving valuable time during engine assembly and maintenance. The included hardened washers ensure accurate torque readings and uniform clamping force. Always retorque fasteners after initial engine run-in to compensate for head gasket compression.

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

Thread Size

1/2 in.

Washers Included

Yes

So far-So good !

Product description was not totally accurate. Had to return first order but got what I wanted on the second order.

Good price on the fuel pump, and reasonable shipping rate. Now we'll see how soon it arrives and if it's a real walbro not a knock off.

Great selection, Great prices, fast and easy checkout.

Good

everything was easy and fast

Great pricing and quick shipping. GREAT

Awsome service and prices,Thanks alot

Excellent customer care/saved me over $500.00 off from their competitors.

This store had a lot of products more than most other sites I looked at. The order was processed quickley and shiped the next day. I will use them again.

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