ARP 300-6728 Connecting Rod Bolt Kit Carrillo Replacement Custom Age 625+

The ARP 300-6728 is a premium connecting rod bolt kit designed as a direct replacement for Carrillo connecting rods. This 2-piece kit features ARP's advanced Custom Age 625+ material, delivering superior fatigue cycle life, tensile strength, and complete resistance to atmospheric corrosion and oxidation.

Why ARP Rod Bolts Are Superior:

The connecting rod bolt is historically the weak link in any connecting rod assembly. ARP rod bolts have been proven to deliver ten times the fatigue strength of competitive fasteners, making them the choice of professional engine builders and top connecting rod manufacturers worldwide. Each bolt is proudly stamped with the ARP name as your assurance of quality.

Custom Age 625+ Material Benefits:

• Tensile strength of 260,000-280,000 psi for extreme load handling
• Superior fatigue cycle life for extended service intervals
• Complete immunity to hydrogen embrittlement and corrosion
• Exceptional toughness in high-stress racing environments
• Advanced super-alloy technology at a more cost-effective price point

ARP Manufacturing Excellence:

• Forged in-house using only the finest quality materials
• Heat-treated using special vertical racks to assure complete 360-degree penetration
• Threads rolled after heat-treat to provide up to 10 times longer fatigue strength
• Precision CNC-machined to exacting specifications
• Specially designed for optimum reliability in each application

Installation Note: Monitor bolt stretch and replace when permanent elongation reaches 0.0005 inches to maintain optimal clamping force and reliability.

This kit includes 2 connecting rod bolts specifically engineered for Carrillo connecting rod applications requiring the ultimate in strength and durability.