Carrillo RAIL3386 Replacement Rod Bolt Kit for Carrillo Connecting Rods

The Carrillo RAIL3386 is a genuine replacement rod bolt kit designed for use with CP-Carrillo high-performance connecting rods. CP-Carrillo (Carrillo Industries) has been the preeminent name in precision connecting rod technology since 1963, supplying race-proven fastener hardware to professional engine builders across automotive, motorcycle, and motorsports disciplines worldwide.

The rod bolt is widely considered the most critical component in any connecting rod assembly. Carrillo engineers each fastener around a known yield load — the bolt is designed so that proper linear stretch never approaches that threshold, ensuring a controlled, repeatable clamp load on every installation. Carrillo offers two bolt material families for their connecting rods: H11 tool steel (WMC) fasteners, rated for approximately 15–18 torque cycles, and Multiphase (CARR) fasteners, which are rated for indefinite re-torquing cycles when the stretch method is followed. CARR-series fasteners feature asymmetrical thread geometry — each thread is slightly different from the previous — which distributes thread engagement load evenly to maximize clamp load and fatigue life.

Key Features:

• Genuine CP-Carrillo OEM replacement rod bolt hardware
• Manufactured to exacting Carrillo tolerances for maximum strength, consistency, and reliability
• Designed as a direct drop-in replacement for worn or rebuilt Carrillo connecting rod assemblies
• High-strength material construction suitable for high-horsepower, forced induction, and high-RPM applications
• Ensures correct torque retention and clamping force at the connecting rod cap joint
• Installation via the stretch method provides superior clamp load accuracy vs. torque-only methods

Always install Carrillo rod bolts using the recommended assembly lubricant applied to threads and under the bolt head. Refer to the stretch and torque specifications provided with your specific Carrillo connecting rod set, as values vary by fastener series. Always verify the head marking on the fastener to confirm the correct part is installed before final assembly.