ARP 204-6004 Connecting Rod Bolt Kit Pro Wave-Loc Series - ARP2000

The ARP 204-6004 is a complete connecting rod bolt kit featuring ARP2000 alloy steel with the innovative Wave-Loc design. ARP2000 delivers superior clamping force at 220,000 psi, making it an ideal upgrade from standard 8740 chrome moly bolts for short track and drag racing applications in both steel and aluminum connecting rods.

Wave-Loc Technology Benefits:

• Wave-Loc surface design contacts the rod and cap for optimum alignment and reduced fluctuating stress
• Provides secure interference fit of .001 to .005 inches for all OEM connecting rods
• Superior material grain flow compared to knurled bolts that create stress risers
• Eliminates galling and scoring through smooth contact surfaces
• Accommodates wide range of factory rod bolt hole tolerances

ARP Quality Features:

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

About ARP2000 Material: ARP2000 is an advanced alloy steel that can be safely heat treated to higher levels than traditional 8740 chrome moly. This material is capable of achieving a clamp load at 220,000 psi while maintaining similar handling characteristics. With proper installation procedures, stress corrosion and hydrogen embrittlement are typically not concerns.

Important Maintenance Note: Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 inches to ensure continued reliability and safety.