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ARP 204-6005 Connecting Rod Bolt Kit ARP2000 Pro Wave-Loc Series

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

204-6005
07/12/2036 4:24 AM
Sale Price

$272.22

4 left at this price

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Usually delivered within 2 days

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Product Details

The ARP 204-6005 is a complete connecting rod bolt kit featuring ARP2000 alloy steel construction with the innovative Wave-Loc design. ARP has earned its reputation as the industry standard for connecting rod fasteners, with manufacturers proudly advertising ARP bolts as original equipment on their rods. The reason is simple: the connecting rod bolt has historically been the weak link in the assembly, and ARP's engineering and manufacturing expertise delivers unmatched reliability and strength.

Why ARP Rod Bolts Are Superior:

  • Testing demonstrates up to 10 times the fatigue strength compared to competitor fasteners
  • ARP2000 alloy steel heat-treated to achieve 220,000 psi tensile strength
  • Wave-Loc design provides interference fit (.001 to .005) for optimal rod and cap alignment
  • Threads rolled after heat treatment for maximum fatigue resistance
  • Each bolt proudly stamped with the ARP name as assurance of quality

Manufacturing Excellence:

  • Forged in-house using premium quality materials
  • Heat-treated on vertical racks ensuring complete 360-degree penetration
  • Precision CNC-machined to exacting specifications
  • Post heat-treat thread rolling increases fatigue life up to 10 times

Wave-Loc Technology Advantages:

  • Wave-Loc surface contacts rod and cap for superior alignment and reduced fluctuating stress
  • Accommodates wide range of OEM rod bolt hole tolerances with consistent snug fit
  • Patented Wave-Loc surface design optimizes material grain flow compared to knurled bolts
  • Smooth contact surface virtually eliminates galling and scoring of rod material
  • No sharp edges or stress risers found in knurled designs

About ARP2000 Material:

ARP2000 is an advanced alloy steel engineered to be heat-treated to higher levels than traditional 8740 chrome moly, producing greater strength while maintaining excellent fatigue properties. With a safe working tensile strength of 220,000 psi, ARP2000 delivers superior clamping loads for demanding racing applications. This material is widely used in short track and drag racing as an upgrade from chrome moly in both steel and aluminum connecting rods. When properly installed, ARP2000 resists stress corrosion and hydrogen embrittlement.

Important Maintenance Note:

Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 inch or more. This simple inspection practice ensures continued reliability and prevents potential failure.

This complete kit includes all necessary rod bolts for your application. ARP's commitment to quality means you're getting fasteners specifically designed and optimized for reliability in high-performance and racing environments.

Products specifications

Bolt/Stud Head

H Style

Cap Retention Style

Thru-bolt

Connecting Rod Bolt Material

8740 chromemoly steel

Connecting Rod Manufacturer

Stock

Fastener Yield Strength (psi)

200,000 psi

Nuts Included

Yes

Quantity

Sold as a set of 12.

Rod Bolt Head Style

H

Rod Bolt Nut Style

Hex

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