Connecting Rods

Features:

• Made from proprietary 4330M alloy forging
• Designed for extreme diesel performance builds
• Compatible with 5.9L and 6.7L Cummins engines
• Fully machined for precision fit and strength
• Available with two high-strength bolt options
• Standard H11 bolts rated at 220 ksi UTS
• Optional MP35N bolts rated at 285 ksi UTS
• Asymmetrical threads increase clamp load stability
• Ideal for builds exceeding 6000 RPM
• Includes Mahle steel bushings for added strength
• Optional cap relief improves oil evacuation
• Perfect for racing, towing, and high-RPM setups

Build Your Cummins With Rods That Refuse To Quit

If you’re serious about pushing your Cummins to its limits, the Carrillo CR_A59DC_0HS_7559B7H Connecting Rods are built to handle everything you can throw at them. These aren’t your average rods, they’re forged from Carrillo’s proprietary 4330M alloy, a material known for its incredible strength and fatigue resistance. Whether your truck is built for competition, high-horsepower street driving, or heavy towing, these rods deliver unmatched reliability under extreme cylinder pressures. Every set is fully machined to exacting tolerances, ensuring perfect balance and consistent performance across all cylinders. Carrillo’s attention to detail extends to the bolts as well, offering both H11 and MP35N options for high-RPM applications that demand extra clamping force. With superior thread design, these bolts distribute load evenly, improving both durability and fatigue life. When your build demands confidence and consistency at every RPM, these connecting rods give you the peace of mind to turn it up without hesitation.

Precision Forged Strength For Extreme Diesel Power

The Carrillo CR_A59DC_0HS_7559B7H Connecting Rods are engineered for 1989 to 2018 Cummins 5.9L and 6.7L engines, offering professional-grade strength and precision for high-performance diesel builds. Each rod is machined from a proprietary 4330M alloy forging, chosen for its balance of strength, ductility, and fatigue resistance. Carrillo’s engineering team designed these rods to endure the extreme combustion forces common in high-boost, high-RPM diesel engines. The rods are available with two bolt configurations, the standard WMC-H7 H11 bolt rated at 220 ksi UTS, and the upgraded CARR-S7 MP35N bolt rated at 285 ksi UTS for extreme conditions. Both bolt options feature asymmetrical thread design, improving load distribution and increasing clamping efficiency during operation. Mahle steel bushings come standard, providing long-term durability and smooth pin operation under high load. For those running higher RPM or heavy fueling, optional cap relief is available to improve oil evacuation and bearing life, making these rods an ideal choice for both competition and extreme-duty applications.

Fitment: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Dodge RAM 2500/3500 5.9L/6.7L Cummins

Notes:

• Forged from proprietary 4330M alloy for maximum strength
• Designed for 1989-2018 5.9L and 6.7L Cummins engines
• Ideal for high-horsepower or high-RPM diesel builds
• Comes with Mahle steel bushings for added durability
• Two bolt options available depending on performance needs
• Standard H11 bolts rated at 220 ksi UTS
• Optional MP35N bolts rated at 285 ksi UTS
• Asymmetrical thread bolts offer better load distribution
• CARR bolts recommended for builds revving over 6000 RPM
• Optional cap relief available for improved oil evacuation
• Professional installation recommended for optimal results