Carrillo BF9821-STD-8 Replacement Connecting Rod Bolts

These are standard WMC-series H11 tool steel fasteners, engineered to deliver precise and reliable clamping loads in high-performance and racing engine applications.

Key Features:

• H11 Tool Steel (WMC) Construction — Ultimate tensile strength (UTS) of 220,000 PSI for superior clamping force
• Asymmetrical Thread Design — Evenly distributes thread engagement for increased clamp load and improved fastener fatigue life
• Rated for 15–18 Torque Cycles — Engineered for multiple engine rebuilds when properly installed
• Laser-Etched Identification — Each bolt marked for traceability and specification verification
• Made in the USA — Manufactured at CP-Carrillo's Irvine, California facility

CP-Carrillo recommends using the bolt stretch method for installation rather than torque-only tightening, as stretch provides the most consistent and accurate preload. Always apply the included or recommended assembly lubricant to bolt threads and under the bolt head prior to installation. A specification card with critical dimensions and bolt installation data is included.

These replacement bolts are compatible with CP-Carrillo connecting rods utilizing the standard WMC fastener system. Verify your rod's bolt specification against the part number before ordering.