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ARP 134-6003 High Performance Connecting Rod Bolt Kit 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

134-6003
07/13/2036 4:53 AM
Sale Price

$84.99

In Stock (10+)

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 134-6003 connecting rod bolt kit delivers the legendary strength and reliability that has made ARP the standard in high-performance engine fasteners. Manufactured from 8740 chrome moly steel and heat-treated to deliver tensile strengths between 180,000 and 210,000 psi, these rod bolts provide the critical strength needed to handle demanding racing applications while remaining cost-effective for budget-conscious builders.

Superior Manufacturing Process:

  • Forged in-house at ARP using premium quality materials for consistent performance
  • Heat-treated using special vertical racks to ensure complete 360-degree penetration
  • Threads rolled after heat-treat to provide up to 10-times longer fatigue strength compared to cut threads
  • Precision CNC-machined to exacting specifications for perfect fitment
  • Each bolt proudly stamped with the ARP name as assurance of quality

Wave-Loc Design Benefits:

  • Wave-Loc surface contacts the rod and cap for optimum alignment and stress reduction
  • Provides snug interference fit (.001 to .005 range) for all OEM connecting rods despite wide factory tolerances
  • Superior material grain flow compared to knurled bolts that create stress risers
  • Eliminates galling and scoring through smooth contact without digging into the rod

ARP rod bolts have been proven through testing to deliver ten times the fatigue strength of competing fasteners, making them the preferred choice of professional engine builders and connecting rod manufacturers worldwide. The 8740 chrome moly material offers excellent toughness and adequate fatigue properties for most racing applications when properly installed and maintained. Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 or more.

Products specifications

Bolt/Stud Head

B 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 16.

Rod Bolt Head Style

B

Rod Bolt Nut Style

Hex

Good need receipt

.

my stars tell it all

easy to use. great prices

Fast delivery easy ordering

Exactly as expected. Fast, easy, and great prices.

I NEED TO BE ABLE TO ORDER MORE THAN 6 SENSORS AT A TIME, I HAVE LEARNED FROM THE PAST THAT IF YOU ORDER MORE THAN 6 SENSOR, YOUR ORDER GETS DELAYED, THAT'S VERY ANNOYING.

It was ok. But problems with my email.

Best price anywhere for this item

Wow, super fast shipping and the best prices!

Easy to use website and fast transaction and shipping.<br>Really great

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