ARP 200-6227 Connecting Rod Bolt Kit ARP2000 Steel Rods 2-Piece

The ARP 200-6227 is a high-performance connecting rod bolt kit designed for general replacement applications with steel connecting rods. This 2-piece kit features ARP2000 Pro Series material, delivering superior strength and reliability for demanding racing and performance engine builds.

Why ARP Rod Bolts Are the Industry Standard:

The connecting rod bolt has traditionally been the weak link in any connecting rod assembly. ARP has earned its reputation by manufacturing rod bolts that offer up to 10 times the fatigue strength of competing fasteners. Leading connecting rod manufacturers specify ARP bolts as original equipment, and for good reason—nobody builds a better bolt. Each bolt is proudly stamped with the ARP name as your assurance of quality and performance.

ARP2000 Material Advantages:

ARP2000 is an advanced alloy steel that can be heat treated to higher strength levels than traditional 8740 chrome moly. Capable of achieving clamping loads at 220,000 psi, ARP2000 provides the perfect balance of strength, reliability, and cost-effectiveness for short track and drag racing applications. This material resists stress corrosion and hydrogen embrittlement when properly installed and maintained.

Manufacturing Excellence:

• Forged in-house using only the finest quality materials
• 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 life
• Precision CNC-machined to exacting specifications
• Specially designed for optimum reliability in each application

Optional Wave-Loc Technology:

When equipped with Wave-Loc features, these bolts provide enhanced performance through improved rod-to-cap alignment and reduced fluctuating stress. The Wave-Loc surface design creates a snug fit with an interference range of .001 to .005 inches, accommodating the wide range of factory rod bolt hole tolerances found in OEM connecting rods. Unlike knurled bolts with sharp edges and stress risers, Wave-Loc's smooth contact surface virtually eliminates galling and scoring while maintaining superior material grain flow.

Important Maintenance Note:

Monitor bolt stretch carefully and replace any bolt that has permanently elongated by .0005 inches or more to ensure continued reliability and safety.