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ARP 235-4519 Cylinder Head Stud Kit 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

235-4519
07/13/2036 5:26 AM
Sale Price

$221.90

1 left at this price

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 235-4519 is a high-performance cylinder head stud kit engineered for serious engine builds where reliability and precision matter most. These head studs are manufactured from premium 8740 chrome moly steel and heat-treated to 200,000 psi tensile strength, delivering exceptional clamping force and durability under extreme conditions.

Key Features:

  • Premium 8740 chrome moly alloy rated at 200,000 psi tensile strength
  • Precision heat-treated vertically in racks for complete and consistent heat penetration
  • Centerless ground for exceptional concentricity and straightness
  • Thread rolled after heat-treat for 10x better fatigue strength
  • Undercut studs equalize stretch for more consistent clamping force
  • Hex head design for reliable installation and torquing
  • Includes hardened parallel-ground washers for even load distribution

Why Choose Head Studs Over Bolts:

Head studs offer significant advantages for performance applications. Unlike bolts which experience both torsional and tensile loads during installation, studs stretch only along the vertical axis when torqued. This provides more accurate and consistent torque loading. Studs also simplify engine assembly by ensuring proper cylinder head and gasket alignment every time. The undercut design on shorter studs equalizes stretch rates across all fasteners, compensating for head gasket compression and helping prevent gasket failures.

Manufacturing Excellence:

ARP's manufacturing process sets the standard for fastener quality. Each stud undergoes centerless grinding through approximately ten precision cuts, resulting in parts so true that cylinder heads and gaskets glide into perfect alignment during assembly. This level of precision is simply not found in competitor products that use less rigorous manufacturing methods.

For engine builders who demand zero defects and zero failures, ARP Pro Series head studs represent the pinnacle of fastener technology. Each kit includes everything needed for professional installation, with hardened washers and studs bearing the ARP stamp as your assurance of quality.

Products specifications

Cut to Fit

No

Fastener Finish

Black oxide

Fastener Material

8740 chromemoly

Fastener Style

Stud

Head Style

Hex

Quantity

Sold as a kit.

Washers Included

Yes

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