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ARP 234-6301 Connecting Rod Bolt Kit ARP2000 Pro Series Cracked Cap Design

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

234-6301
07/11/2036 4:18 AM
Sale Price

$143.48

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 234-6301 Connecting Rod Bolt Kit is engineered for high-performance engines requiring superior fastener reliability. This complete kit features ARP2000 Pro Series bolts specifically designed for cracked cap connecting rod applications, delivering exceptional strength and fatigue resistance for demanding racing environments.

Key Features:

  • ARP2000 alloy steel construction capable of 220,000 psi clamping loads
  • Cracked cap design for precise rod alignment and optimal load distribution
  • Forged in-house at ARP using premium quality materials
  • Heat-treated using specialized vertical racks for complete 360-degree penetration
  • Threads rolled after heat-treat to provide up to 10 times longer fatigue strength
  • Precision CNC-machined to exacting specifications
  • Complete kit includes all necessary fasteners for installation

ARP2000 Material Advantages:

ARP2000 alloy steel offers significant performance improvements over standard 8740 chrome moly, with superior strength and fatigue characteristics. This material is widely used in short track and drag racing applications as an upgrade for both steel and aluminum connecting rods, providing enhanced reliability under extreme loads and high RPM conditions.

Wave-Loc Technology Benefits:

  • Wave-Loc surface contacts rod and cap for optimum alignment and reduced fluctuating stress
  • Provides secure interference fit (.001 to .005 range) despite wide factory rod bolt hole tolerances
  • Superior material grain flow compared to knurled bolts that create stress risers
  • Eliminates galling and scoring through smooth contact surfaces

Each ARP bolt is proudly stamped with the ARP name as assurance of quality and reliability. Critical for high-performance applications, these bolts should be monitored for stretch and replaced when permanently elongated by .0005 inch to maintain optimal connecting rod integrity.

Products specifications

Bolt/Stud Head

E Style (12Point)

Cap Retention Style

Cap screw

Connecting Rod Bolt Material

ARP 2000 alloy

Connecting Rod Manufacturer

Stock

Fastener Yield Strength (psi)

200,000 psi

Nuts Included

No

Quantity

Sold as a set of 16.

Rod Bolt Head Style

E

Rod Bolt Nut Style

12-point

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