Carrillo Straight Pro-H 3/8 WMC Bolt Connecting Rods

2003–2025 Dodge Ram 1500, 2500, 3500 / 2004–2025 Dodge Durango / 2005–2025 Chrysler 300 / 2005–2008 Dodge Magnum / 2005–2025 Jeep Grand Cherokee / 2006–2025 Dodge Charger, Jeep Commander / 2008–2025 Dodge Challenger

CR5311-8

Overview:

The Carrillo Straight Pro-H 3/8 WMC Bolt Connecting Rods are precision-engineered performance components designed specifically for Dodge and Chrysler Hemi V8 engines, including the 5.7L and 6.1L variants. These connecting rods are ideal for enthusiasts and professional builders seeking enhanced strength and reliability for high-performance or forced induction applications. Crafted to withstand increased horsepower and torque demands, they provide a solid foundation for engine durability and consistent power delivery.

Whether upgrading a street machine, a track car, or a heavy-duty truck, these rods offer a direct fit solution for a wide range of Dodge Ram, Durango, Charger, Challenger, Magnum, Chrysler 300, Jeep Grand Cherokee, and Jeep Commander models spanning from the early 2000s through 2025.

Key Features:

Designed with advanced engineering and premium materials, the Carrillo Straight Pro-H connecting rods deliver exceptional performance and reliability. Key features include:

• Constructed from high-strength, forged steel for maximum durability under extreme loads
• 3/8-inch WMC (Weather-Metallic Coated) bolts for superior clamping force and fatigue resistance
• Straight Pro-H design optimized for Hemi V8 engine geometry and balance
• Precision machined for exact fitment and alignment to reduce bearing wear
• Compatible with factory and aftermarket pistons and crankshafts without modification
• Ideal for naturally aspirated, nitrous, supercharged, and turbocharged setups
• Enhanced fatigue life to support high RPM and sustained performance driving
• Direct OEM replacement fitment for ease of installation

Construction & Design:

Each connecting rod is forged from premium-grade steel alloy, ensuring superior tensile strength and resistance to bending or twisting forces. The rods undergo a meticulous heat treatment process to optimize hardness and toughness, providing a balance between durability and weight. The 3/8-inch WMC bolts feature a proprietary coating that improves bolt stretch characteristics and fatigue resistance, critical for maintaining rod integrity under high cylinder pressures.

The Straight Pro-H design aligns perfectly with the Hemi engine’s unique architecture, maintaining optimal rod-to-crank and rod-to-piston geometry. This precision engineering reduces bearing wear and enhances engine smoothness, contributing to longer engine life and improved reliability during demanding driving conditions.

Installation & Fitment:

These connecting rods are engineered as direct replacements for a broad range of Dodge and Chrysler Hemi engines, requiring no modifications to the engine block, crankshaft, or pistons. Installation should be performed by a qualified engine builder or technician to ensure proper torque specifications and clearances are met. The rods are compatible with factory rod bearings and standard assembly procedures, making them an efficient upgrade for performance builds or engine rebuilds.

What's Included:

• Set of 8 Carrillo Straight Pro-H 3/8 WMC Bolt Connecting Rods
• High-strength 3/8-inch WMC bolts pre-installed
• Installation guidelines and torque specifications

Ideal For:

These connecting rods are perfect for automotive enthusiasts, professional engine builders, and racers who demand increased strength and reliability from their Dodge or Chrysler Hemi engines. They are especially suited for:

• High-performance street vehicles
• Drag racing and road racing applications
• Forced induction setups including superchargers and turbochargers
• Heavy-duty trucks requiring enhanced engine durability
• Engine rebuilds aiming to upgrade internal components for longevity

CP-Carrillo is a respected manufacturer of performance engine internals, producing high-quality connecting rods and pistons for demanding street and motorsport applications. With a legacy rooted in no-compromise rod design and proven use in high-output builds, CP-Carrillo parts are chosen when strength, consistency, and precision matter most inside the engine.