The CP-Carrillo DC7559S Pro-H Connecting Rods with CARR multiphase bolts are an ideal upgrade for your 1989–2018 Dodge 5.9L or 6.7L Diesel engine build. Known since 1963 as one of the world’s leading manufacturers of high-performance connecting rods, CP-Carrillo is trusted across the motorsports and performance industries for both custom and prototype rod production.
These rods are built using a proprietary alloy blend of chrome, nickel, molybdenum, and vanadium that complies with strict VAR (Vacuum Arc Remelt) ASTM standards. Each batch of material undergoes rigorous inspection by both the supplier and independent metallurgists to verify its physical and chemical consistency. The heat treatment process uses mar-aging to deliver exceptional strength—195,000 psi tensile and 182,000 psi yield—while preserving key properties like ductility and low notch sensitivity.
Forged from oversized blanks, each rod ensures optimal grain flow and removes surface imperfections from the forging process. Advanced CNC machining with in-process probing ensures tight dimensional tolerances. Each rod is inspected multiple times using magnaflux testing, Rockwell hardness tested to verify heat treatment accuracy, and finished with a shot peening process for enhanced durability.
Equipped with high-strength CARR multiphase bolts, this connecting rod is specifically designed for more demanding and extreme performance applications.
