ARP 104-6025 Connecting Rod Bolt Kit Chrome Moly - 8740 2-Piece

The ARP 104-6025 is a high-performance connecting rod bolt kit featuring cap screw design and constructed from ARP's proven 8740 chrome moly alloy. This 2-piece bolt set delivers the strength and reliability that has made ARP the preferred choice of connecting rod manufacturers and professional engine builders worldwide.

Key Features:

• 8740 chrome moly construction delivers tensile strength between 180,000-210,000 psi
• Cap screw design for secure, positive clamping force
• Threads rolled after heat-treatment for up to 10 times longer fatigue life
• Forged in-house using premium quality materials
• Heat-treated on vertical racks for complete 360-degree penetration
• Precision CNC-machined to exacting tolerances

8740 Chrome Moly Material:

ARP's 8740 chrome moly is a quench and temper steel that provides excellent toughness with adequate fatigue properties for most racing applications. While now considered moderate strength compared to newer exotic alloys, 8740 remains a proven, cost-effective solution when threads are rolled after heat-treatment—standard practice for all ARP fasteners.

Installation Note:

Monitor bolt stretch carefully and replace any bolt that has permanently elongated by 0.0005 inches or more. This ensures continued reliability and prevents unexpected failure.

Each bolt is proudly stamped with the ARP name as assurance of quality and authenticity. When connecting rod strength matters, trust the fastener that rod manufacturers choose as original equipment.