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ARP 114-3602 Cylinder Head Fasteners High Performance 8740 Chrome Moly

Manufacturer

ARP

<h3>About ARP – Automotive Racing Products</h3><p>Few names carry as much weight in the performance fastener world as <strong>ARP</strong> — short for Automotive Racing Products. Back in 1968, racing enthusiast Gary Holzapfel noticed that many of his friends' broken engines were caused by fastener failure, and at the time no commercially available studs or bolts were up to the challenge — so he drew on his years of experience as a leading aerospace subcontractor and founded ARP. That problem-solving spirit has driven the company ever since.</p><p>From a backyard garage workshop, ARP has grown into a highly diversified manufacturer with 18 buildings across Southern California, totaling more than 275,000 square feet of forging, heat-treating, machining, quality control, finishing, and packaging facilities in Santa Paula and Ventura, California.</p><h3>Engineering That Goes Beyond &quot;Aerospace Quality&quot;</h3><p>ARP uses only top-quality materials — far above the usual &quot;aerospace quality&quot; others settle for — in a highly exacting manufacturing process to create fasteners with the strength and durability to last race after race. Fastener materials are available in 8740 Chrome Moly, ARP2000, and Custom Age 625+, each engineered for specific performance thresholds. In order to ensure optimum quality control, ARP controls all aspects of the manufacturing process entirely in-house — a discipline that has allowed it to build a reputation for &quot;zero defects&quot; quality throughout the industry.</p><p>Automotive Racing Products has achieved ISO 9001:2008 and AS9100 registration, certifications the company has maintained as a testament to its unwavering dedication to producing the highest quality fasteners available. ARP also operates an Aerospace Division and is one of the very few companies in the world fully licensed by the United States Government to manufacture MS-21250 fatigue-rated fasteners.</p><h3>Trusted by the World&apos;s Top Racing Programs</h3><p>ARP enjoys working relationships with professional engine builders and race teams across Formula 1, IndyCar, IMSA, NASCAR, NHRA, IHRA, Lucas Oil Late Model Dirt, and World of Outlaws — constant interaction that keeps ARP on the cutting edge of fastener technology. Whether you&apos;re building a weekend bracket racer or a full-time professional race engine, ARP has a solution engineered to hold things together under the most extreme conditions.</p><h3>ARP&apos;s Engine Fastener Lineup</h3><p>Today, ARP&apos;s product line contains thousands of part numbers and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. Among the most popular are <a href="/48-arp-engine-cylinder-head-bolt-set-10306">Engine Cylinder Head Bolt Sets</a>, <a href="/48-arp-engine-connecting-rod-bolt-5280">Engine Connecting Rod Bolts</a>, and complete <a href="/48-arp-engine-connecting-rod-5276">Engine Connecting Rods</a> — three categories that represent the critical fastening points where engine integrity is made or lost. ARP&apos;s High Performance series head bolt kits are rated at 170,000 psi — 15 percent stronger than Grade 8 fasteners — and are available with hex heads or reduced-wrenching 12-point heads that eliminate the need for valvetrain removal when re-torquing.</p><p>ARP stands behind its products indefinitely with respect to materials and workmanship, making every fastener a long-term investment in engine reliability rather than a consumable component.</p>

Part Number

114-3602
09/11/2036 1:43 PM
Sale Price

$104.03

2 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

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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.

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