Connecting Rods

Two different type of connecting rods have been used on the 6.7L. One type connecting rod has three bumps on the cap end and the other does not; due to weight differences in the rods, engine vibration will result if the rods are mixed in one engine. Special consideration must be given not to mix connecting rods. Only use the same type connecting rod when replacing.

• Machined connecting rods are no longer used in the diesel engine. Do not install machined connecting rods into an engine that has fractured split connecting rods. 
• Fractured split connecting rods are first manufactured as a single piece and then fractured into two pieces. Fractured split connecting rods can be identified by a rough and irregular surface at the connecting rod split face. To properly assemble the rod cap to the connecting rod, the bearing tangs on the connecting rod and cap must be located on the same side of the rod. The long end of the connecting rod must be assembled on the intake or camshaft side of the engine.
• Each matched fractured split connecting rod and cap is an assembly and are not interchangeable. If a connecting rod or cap is damaged, the entire assembly must be replaced.
• The connecting rods are a split angle design. They have a pressed-in-place wrist pin bushing that is lubricated by piston cooling nozzle oil spray.