3967346
Engine Connecting Rod
Cummins®

The Cummins 3967346 Engine Connecting Rod is a vital component in the operation of heavy-duty trucks. This part facilitates the transfer of force from the piston to the crankshaft, playing a significant role in the engine’s overall performance and efficiency ².

Basic Concepts of Engine Connecting Rods

An engine connecting rod is a mechanical component that links the piston to the crankshaft within an internal combustion engine. Its primary function is to convert the linear motion of the piston into rotational motion of the crankshaft, which is essential for the engine’s operation. The connecting rod operates under high stress and must withstand significant forces during engine operation ¹.

Purpose of the Cummins 3967346 Engine Connecting Rod

The Cummins 3967346 Engine Connecting Rod serves to transfer the force generated by the piston’s movement to the crankshaft. This transfer is crucial for the engine’s ability to produce power. The connecting rod ensures that the piston’s up-and-down motion is effectively converted into the rotational motion needed to drive the vehicle ².

Key Features

The Cummins 3967346 Engine Connecting Rod is designed with several key features to enhance its performance and durability. It is constructed from high-strength materials, ensuring it can withstand the rigors of heavy-duty use. The design includes precision machining and balanced weight distribution to optimize performance. Additionally, the rod features advanced bearing surfaces to reduce friction and wear, contributing to its longevity ².

Benefits

The Cummins 3967346 Engine Connecting Rod offers several benefits, including improved engine efficiency, enhanced durability, and reliable performance under heavy-duty conditions. Its robust construction and precise engineering contribute to smoother engine operation and increased power output. The rod’s design also helps to minimize maintenance requirements and extend the engine’s service life ².

Installation and Compatibility

Proper installation of the Cummins 3967346 Engine Connecting Rod is crucial for ensuring optimal performance and compatibility with Cummins engines. Installation procedures should follow manufacturer guidelines to ensure correct alignment and secure fitting. Attention to detail during installation helps prevent potential issues and ensures the rod functions as intended within the engine system ².

Maintenance and Troubleshooting

Regular maintenance of the Cummins 3967346 Engine Connecting Rod is important for sustained performance. This includes periodic inspections to check for wear, damage, or signs of fatigue. Lubrication requirements should be adhered to, ensuring that all moving parts are properly lubricated to reduce friction and wear. Common troubleshooting tips include checking for unusual noises, vibrations, or performance issues, which may indicate a problem with the connecting rod or related components ¹.

Performance Enhancements

The Cummins 3967346 Engine Connecting Rod contributes to overall engine performance in several ways. Its design and construction help to increase power output by efficiently transferring force from the piston to the crankshaft. The rod’s low-friction surfaces and balanced design also enhance fuel efficiency, allowing the engine to operate more smoothly and with greater reliability. Additionally, the rod’s durability ensures long-term performance, even under demanding conditions ².

Cummins Overview

Cummins Inc. is a renowned manufacturer with a strong reputation in the automotive and heavy-duty truck industry. The company has a long history of producing high-quality components, including engines, filtration systems, and aftermarket parts. Cummins is committed to innovation and excellence, ensuring that their products meet the rigorous demands of heavy-duty applications. Their components are known for reliability, performance, and durability, making them a preferred choice for professionals in the industry ².

Cummins Engine Connecting Rod 3967346 Compatibility

The Cummins Engine Connecting Rod part number 3967346 is designed to fit a variety of Cummins engines, ensuring robust performance and reliability across different engine models. Here is a detailed look at the compatibility of this part with specific engine models:

ISC CM850 and ISL9 CM2150 SN

The ISC CM850 and ISL9 CM2150 SN engines are part of Cummins’ lineup of industrial and commercial engines. The connecting rod 3967346 is engineered to interface seamlessly with these engines, providing a critical link between the crankshaft and the piston. This ensures smooth operation and efficient power transfer, which is essential for the performance of these engines ².

L GAS PLUS CM556

The L GAS PLUS CM556 engine is another model that benefits from the use of the Cummins Engine Connecting Rod 3967346. This part is designed to handle the specific demands of this engine, ensuring durability and longevity under various operating conditions ².

QSL8.9 CM2150 L141

The QSL8.9 CM2150 L141 engine is a high-performance model that requires a reliable connecting rod to maintain its efficiency and power. The part 3967346 is specifically designed to fit this engine, providing the necessary strength and precision to support its operations ².

QSL9 CM850 (CM2850)

The QSL9 CM850 (CM2850) engine is known for its robust performance in demanding applications. The Cummins Engine Connecting Rod 3967346 is compatible with this engine, ensuring that it can handle the stresses and strains of heavy-duty use. This compatibility is crucial for maintaining the engine’s performance and reliability over time ².

Role of Part 3967346 Engine Connecting Rod in Engine Systems

The part 3967346 Engine Connecting Rod is integral to the efficient operation of internal combustion engines. It serves as the pivotal link between the piston and the crankshaft, facilitating the conversion of linear motion into rotational motion. This conversion is essential for the engine’s performance, as it directly influences the power output and overall efficiency of the engine ².

Interaction with Key Engine Components

1. Piston: The connecting rod is bolted to the piston via the piston pin. As the piston moves up and down within the cylinder, the connecting rod translates this linear motion ².

2. Crankshaft: On the other end, the connecting rod is attached to the crankshaft through the rod bearing. This attachment allows the crankshaft to rotate, which in turn drives the engine’s flywheel and ultimately the vehicle’s wheels ².

3. Rod Bearings: These bearings are situated between the connecting rod and the crankshaft journal. They reduce friction and wear, ensuring smooth operation and longevity of the engine components ².

4. Cylinder Block: The entire assembly, including the piston, connecting rod, and crankshaft, is housed within the cylinder block. The block provides structural integrity and supports the precise alignment of these moving parts ².

5. Flywheel: The rotational motion transmitted by the crankshaft to the flywheel stores kinetic energy, which helps in smoothing out the power delivery to the transmission system ².

6. Valve Train: Although not directly connected, the efficient operation of the connecting rod influences the timing and performance of the valve train, affecting the intake and exhaust cycles ².

Impact on Engine Performance

The precision and durability of the part 3967346 Engine Connecting Rod significantly affect engine performance. A well-maintained connecting rod ensures consistent power delivery, reduced vibrations, and enhanced fuel efficiency. Conversely, a compromised connecting rod can lead to decreased performance, increased wear on other components, and potential engine failure ².

Conclusion

The Cummins 3967346 Engine Connecting Rod plays a fundamental role in the interplay between various engine components, directly impacting the engine’s reliability and performance. Its robust design, precise engineering, and compatibility with a range of Cummins engines make it a critical component for heavy-duty applications ².