Carrillo M4018-050 High-Performance Connecting Rod Fastener Bolt

The Carrillo M4018-050 is a high-performance connecting rod fastener from CP-Carrillo, a manufacturer with nearly five decades of experience producing the most recognized fasteners in the connecting rod industry. Engineered for racing and high-performance engine applications, this bolt is built to the exacting standards that have made CP-Carrillo fasteners the benchmark for engine builders worldwide.

Key Features:

• Manufactured to CP-Carrillo's proprietary yield-load specifications for consistent, reliable clamping force
• Designed for use with CP-Carrillo connecting rods in performance and racing engine builds
• Compatible with the stretch-method installation process — CP-Carrillo's preferred torquing method for maximum accuracy
• Features asymmetrical thread design for evenly distributed thread engagement, increased clamp load, and improved fastener fatigue life
• Supplied with molybdenum-based assembly lubricant for proper installation (lube must be applied to threads and under bolt head)
• Engineered to withstand extreme temperature and pressure conditions found in high-revving race engines

CP-Carrillo recommends the bolt-stretch method over torque-only installation, as torque values can be affected by thread condition, lubrication, and other variables. Each CP-Carrillo fastener design is based on a known yield load, with a recommended stretch value of 80% of yield load. Replacement fasteners are available individually to allow rebuilders to maintain matched rod sets throughout engine service intervals.