4925142
Spark Plug Wire
Cummins®

The Cummins 4925142 Spark Plug Wire is a component designed for use in heavy-duty trucks. It facilitates the transmission of high-voltage current from the ignition coil to the spark plug, ensuring efficient combustion within the engine cylinders and contributing to the vehicle’s overall performance and reliability.

Basic Concepts of Spark Plug Wires

Spark plug wires are integral to the operation of an internal combustion engine. They deliver high-voltage electrical current from the ignition coil to the spark plug, generating a spark that ignites the air-fuel mixture within the combustion chamber, driving the engine’s pistons and producing power. The integrity and efficiency of spark plug wires directly influence the engine’s ignition process and overall performance ¹.

Purpose of the Cummins 4925142 Spark Plug Wire

This Cummins part transmits high-voltage current from the ignition coil to the spark plug, igniting the air-fuel mixture in the combustion chamber and powering the engine. Its design ensures efficient and reliable delivery of this high-voltage current, contributing to the engine’s performance and efficiency.

Key Features

The 4925142 is constructed with materials and design elements that enhance its performance and durability. It features robust insulation material that resists high voltage and environmental factors, ensuring reliable operation. The wire’s design includes precise fittings that secure it to the ignition system components, minimizing the risk of disconnection or failure. Additionally, its construction allows for flexibility, facilitating easier installation and routing within the engine compartment.

Benefits

Using this part offers several benefits. It contributes to improved engine performance by ensuring efficient transmission of high-voltage current to the spark plug. This results in more reliable ignition and combustion, leading to smoother operation and potentially increased fuel efficiency. The wire’s durable construction and resistance to environmental factors also contribute to its longevity, reducing the need for frequent replacements.

Installation Considerations

When installing the 4925142, it is important to follow guidelines and best practices to ensure optimal performance and safety. Proper routing of the wire minimizes the risk of interference with other engine components and reduces the potential for damage. Securing the wire in place with the provided fittings ensures a stable connection, while careful handling prevents damage to the insulation or conductors. Following these practices helps maintain the integrity of the ignition system and ensures reliable engine operation.

Troubleshooting Common Issues

Common issues with spark plug wires, such as misfires, poor acceleration, or rough idling, can often be traced back to problems with the wires themselves. Inspecting the wires for signs of wear, damage, or corrosion can help identify potential issues. Ensuring that the wires are properly routed, secured, and connected can prevent many common problems. If issues persist, replacing the wires may be necessary to restore proper engine function.

Maintenance Tips

To ensure the continued reliable performance of the 4925142, regular maintenance is recommended. This includes inspecting the wire for signs of wear, damage, or corrosion during routine engine checks. Cleaning the wire and its connections can help prevent buildup that may interfere with its operation. Following manufacturer-recommended replacement intervals can also help maintain engine performance and reliability.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the automotive industry. The company offers a wide range of products designed to meet the needs of various applications, from heavy-duty trucks to industrial and marine engines.

Spark Plug Wire Compatibility with Cummins Engines

The Spark Plug Wire part number 4925142, manufactured by Cummins, is a critical component for the ignition system in certain engines. This part ensures the proper transfer of electrical energy from the ignition coil to the spark plugs, which is essential for the engine’s combustion process.

KTA19GC Series

The KTA19GC engine series is designed for industrial and marine applications. The Spark Plug Wire part 4925142 fits seamlessly within this series, providing a reliable connection that supports the engine’s performance and efficiency. This part is engineered to withstand the demanding conditions often encountered in industrial and marine environments.

KTA19GC CM558

The KTA19GC CM558 engine is a variant within the KTA19GC series, tailored for specific applications that require enhanced durability and performance. The Spark Plug Wire part 4925142 is compatible with this variant, ensuring that the ignition system functions optimally. This compatibility is crucial for maintaining the engine’s reliability and longevity, especially in high-stress operational settings.

In both the KTA19GC and KTA19GC CM558 engines, the Spark Plug Wire part 4925142 is designed to meet the stringent requirements of Cummins’ quality standards. This ensures that the ignition system operates efficiently, contributing to the overall performance and reliability of the engine.

Role of Part 4925142 Spark Plug Wire in the Ignition System

The part 4925142 Spark Plug Wire is an essential component within the ignition system of an engine. Its primary function is to transmit high-voltage electrical current from the ignition coil to the spark plug. This transmission is vital for the spark plug to generate the spark needed to ignite the air-fuel mixture within the combustion chamber.

In the ignition system, the spark plug wire connects to the distributor (in systems that utilize one) or directly to the ignition coil in coil-on-plug (COP) systems. The wire must maintain a secure and consistent connection to ensure that the electrical current is delivered without interruption or loss.

The spark plug wire’s insulation is designed to withstand the high voltage and prevent any electrical arcing, which could lead to a loss of power or misfires. Additionally, the wire must be resistant to the high temperatures generated within the engine compartment to ensure longevity and reliable performance.

In systems with a distributor, the spark plug wire routes the electrical current from the distributor cap to the respective spark plug. The timing of this delivery is controlled by the distributor, ensuring that the spark occurs at the optimal moment in the engine’s combustion cycle.

In COP systems, each spark plug wire connects directly to its corresponding ignition coil, eliminating the need for a distributor. This setup often results in more precise timing and improved engine performance, as each coil can be controlled individually by the engine’s electronic control unit (ECU).

Overall, the part 4925142 Spark Plug Wire plays a significant role in ensuring the efficient and reliable operation of the ignition system, contributing to the engine’s overall performance and fuel efficiency.

Conclusion

The Cummins 4925142 Spark Plug Wire is a critical component in the ignition system of heavy-duty trucks, ensuring efficient transmission of high-voltage current from the ignition coil to the spark plug. Its robust construction, precise fittings, and flexible design contribute to reliable engine performance and durability. Regular maintenance and proper installation are essential to maximize the benefits of this part, ensuring optimal engine operation and longevity.