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.
