ARP 234-6321 Connecting Rod Bolt Kit ARP2000 Cracked Cap Design 2-Piece

The ARP 234-6321 is a high-performance connecting rod bolt kit designed specifically for cracked cap connecting rods. Featuring ARP's renowned ARP2000 alloy material, this 2-piece bolt set delivers superior strength and reliability for demanding racing applications where connecting rod integrity is critical.

Why ARP Connecting Rod Bolts Lead the Industry:

ARP has earned its reputation as the premier choice for connecting rod fasteners, with many rod manufacturers specifying ARP bolts as original equipment. The connecting rod bolt has historically been the weakest link in the rod assembly, and ARP's superior engineering and manufacturing processes deliver fasteners with up to 10 times the fatigue strength of competing products. Each bolt is proudly stamped with the ARP name as your assurance of quality.

ARP2000 Material Advantages:

ARP2000 is an advanced alloy steel heat-treated to achieve exceptional clamping loads at 220,000 psi tensile strength. This material offers significantly greater strength than standard 8740 chrome moly while maintaining excellent resistance to stress corrosion and hydrogen embrittlement when properly installed. ARP2000 is widely used in short track and drag racing as a proven upgrade for both steel and aluminum connecting rods.

Manufacturing Excellence:

• Forged in-house at ARP using premium quality alloy steel
• Heat-treated on special vertical racks ensuring complete 360-degree penetration for consistent properties
• Threads rolled after heat-treat to provide up to 10 times longer fatigue life
• Precision CNC-machined to exacting tolerances for perfect fit
• Engineered specifically for cracked cap connecting rod designs

Wave-Loc Technology Benefits:

• Wave-Loc surface contacts rod and cap for optimal alignment and reduced fluctuating stress
• Provides interference fit (.001" to .005") accommodating wide range of OEM rod bolt hole tolerances
• Superior material grain flow compared to knurled bolts that create stress risers
• Eliminates galling and scoring through smooth contact without digging into rod material
• Strengthens the rod assembly itself through improved load distribution

Important Maintenance Note:

Monitor bolt stretch carefully and replace any bolt that has permanently elongated by .0005" or more to maintain optimal connecting rod reliability and safety.

This kit includes 2 connecting rod bolts designed for one connecting rod with cracked cap design. Trust ARP's decades of racing experience and metallurgical expertise to protect your engine investment with the industry's finest connecting rod fasteners.