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ARP 204-6001 Connecting Rod Bolt Kit ARP2000 Pro Wave-Loc Series

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

204-6001
09/12/2036 5:06 AM
Sale Price

$287.98

2 left at this price

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Usually delivered within 2 days

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Product Details

The ARP 204-6001 is a complete connecting rod bolt kit featuring ARP2000 alloy steel fasteners with the innovative Wave-Loc design. Engineered to be the strongest link in your connecting rod assembly, these precision-manufactured bolts deliver superior reliability and fatigue resistance for high-performance and racing applications.

ARP2000 Material Advantages:

ARP2000 alloy steel is heat-treated to achieve a clamping load at 220,000 psi, significantly stronger than standard 8740 chrome moly. This advanced material provides an excellent upgrade for both steel and aluminum connecting rods in short track and drag racing applications, with superior resistance to stress corrosion and hydrogen embrittlement when properly installed.

Wave-Loc Technology Benefits:

  • Precision-ground Wave-Loc surface contacts rod and cap for optimal alignment and reduced fluctuating stress
  • Interference fit range of .001" to .005" accommodates wide range of OEM rod bolt hole tolerances
  • Superior material grain flow compared to knurled bolts that create stress risers
  • Smooth contact surface virtually eliminates galling and scoring of connecting rod
  • Strengthens the connecting rod itself by reducing stress concentrations

ARP Quality Features:

  • Forged in-house using only premium quality materials
  • Heat-treated using specialized vertical racks for complete 360-degree penetration
  • Threads rolled after heat-treat for up to 10 times longer fatigue strength
  • Precision CNC-machined to exacting specifications
  • ARP name stamped on each bolt as assurance of quality

Important Service Note: Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005" to maintain optimal performance and reliability.

Products specifications

Bolt/Stud Head

H Style

Cap Retention Style

Through-bolt

Connecting Rod Bolt Diameter

10mm

Connecting Rod Bolt Material

ARP2000 alloy

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

Underhead Length (in)

0.188 in.

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