Connecting Rods & Related Components for Cummins ISC Engines

The connecting rod is one of the most vital components inside the Cummins ISC engine. It serves as the critical link between the piston and the crankshaft, translating linear motion from combustion into rotational power. A strong, well-balanced connecting rod ensures smooth operation, reliability under load, and long service life for this mid-range Cummins platform.

At Diesel Pro Power, we supply high-quality connecting rods and related components designed specifically for Cummins ISC applications. With over 40,000+ satisfied customers worldwide, we have become the trusted source for dependable diesel parts in marine, industrial, and power generation markets.

The Role of Connecting Rods in Cummins ISC Engines

Connecting rods in the ISC engine are precision-engineered to withstand tremendous pressures and stresses. Each combustion cycle forces the piston downward with explosive energy, and the connecting rod must absorb this force while maintaining alignment with the crankshaft.

A properly functioning connecting rod will:

• Transfer combustion force effectively – ensuring maximum horsepower and torque delivery.

• Maintain engine balance – preventing vibration and premature wear.

• Support high durability – withstanding thousands of operating hours in continuous duty environments.

• Protect critical components – such as pistons, crankshafts, and bearings, from misalignment and overload.

When connecting rods or related components begin to wear, it can lead to catastrophic engine damage. Early replacement with OEM-quality or equivalent parts is key to protecting your investment.

Complete Connecting Rod Assemblies for Cummins ISC

Diesel Pro Power offers complete connecting rod assemblies for Cummins ISC engines, manufactured to meet or exceed original specifications. These rods are precision-machined, balanced, and inspected to ensure reliability under heavy-duty use.

Features include:

• Forged steel construction for maximum strength.

• Precision-bored small and big ends for proper alignment.

• Pre-installed bushings where applicable.

• Factory balancing to reduce vibration.

Whether you’re overhauling an entire engine or replacing a single damaged rod, having access to complete assemblies ensures a straightforward installation and consistent performance.

Connecting Rod Bearings for Cummins ISC

Rod bearings play a critical role in reducing friction between the connecting rod and the crankshaft journal. They provide a smooth, durable surface that allows high-speed rotation under immense pressure.

At Diesel Pro Power, we supply:

• Standard bearings – for stock rebuilds where crankshaft journals are in good condition.

• Oversized bearings – to match crankshafts that have been ground down during reconditioning.

Key benefits of replacing rod bearings during an overhaul include:

• Preventing oil starvation and overheating.

• Reducing metal-to-metal contact that leads to crankshaft wear.

• Ensuring smooth rotation and improved lubrication flow.

Connecting Rod Bushings for Cummins ISC

The small end of the connecting rod, where it connects to the piston pin, is fitted with a precision bushing. This component ensures the piston pin rotates freely without creating excess wear on the rod itself.

Our Cummins ISC connecting rod bushings are engineered for:

• High wear resistance.

• Proper oil channeling for continuous lubrication.

• Long service intervals under heavy-duty use.

Replacing worn bushings is critical during any rod service or engine rebuild.

Connecting Rod Bolts for Cummins ISC

Bolts are often the most overlooked yet most important component of the connecting rod assembly. These fasteners hold the rod cap securely in place and are subject to extreme tensile and cyclical loads.

We recommend always replacing connecting rod bolts during an overhaul. Diesel Pro Power provides bolts specifically engineered for Cummins ISC engines, with the correct grade of alloy and tensile strength for maximum reliability.

Key benefits of new rod bolts:

• Prevents cap movement under load.

• Maintains consistent torque and clamping force.

• Reduces the risk of catastrophic rod failure.

Symptoms of Worn or Failing Connecting Rod Components

Timely replacement of connecting rod components is essential to protect the Cummins ISC engine from major damage. Watch for these warning signs:

• Knocking sounds from deep within the engine, especially under load.

• Loss of oil pressure caused by worn rod bearings.

• Excessive vibration or imbalance.

• Metal shavings in the oil due to bearing or bushing wear.

• Severe piston or crankshaft damage in cases of rod bolt failure.

If these symptoms appear, immediate inspection and replacement of rod assemblies and related components are strongly recommended.

Applications of Cummins ISC Connecting Rods

The Cummins ISC engine is widely used in industrial, marine, and generator applications, where reliability and endurance are critical. Connecting rods and related parts must withstand long operating hours in:

• Commercial marine vessels.

• Construction equipment.

• Agricultural machinery.

• Power generation systems.

• Industrial pumping and compressor units.

By choosing high-quality replacement rods and bearings, operators ensure uninterrupted service and reduced downtime across these demanding environments.

Why Choose Diesel Pro Power for Cummins ISC Connecting Rods

With decades of expertise, Diesel Pro Power provides more than just parts—we provide confidence. Our customers count on us for:

• Worldwide shipping to keep engines running in any location.

• Engine-specific parts catalogs for easy ordering.

• Proven quality backed by thousands of satisfied operators.

• Dedicated customer support with deep knowledge of Cummins ISC applications.

Every component we sell is designed to deliver long-lasting durability, ensuring that your engine continues to perform in the toughest conditions.