4364421
High Pressure Fuel Fitting
Cummins®

Introduction

The High Pressure Fuel Fitting 4364421 is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This fitting is integral to the fuel system of commercial trucks, playing a significant role in ensuring the efficient operation of the vehicle. Its design and functionality are tailored to meet the demanding requirements of commercial truck operations, contributing to both engine performance and fuel efficiency ¹.

Function and Operation

This Cummins part operates within the fuel system of a truck by maintaining the necessary fuel pressure required for optimal engine performance. It ensures that fuel is delivered efficiently to the engine, which is crucial for the combustion process. The fitting is designed to withstand high pressures and temperatures, ensuring that the fuel system operates smoothly under various driving conditions ².

Purpose of the High Pressure Fuel Fitting 4364421

The primary role of this part in a truck’s operation is to contribute to engine performance and fuel efficiency. By maintaining consistent fuel pressure, it helps ensure that the engine receives the correct amount of fuel at the right pressure, which is vital for efficient combustion and overall engine performance. This fitting is a key component in the fuel delivery system, directly influencing the truck’s operational efficiency ³.

Key Features

The 4364421 is characterized by its robust design and the use of high-quality materials. These features enhance its performance and durability, allowing it to withstand the high pressures and temperatures typical of a truck’s fuel system. Its design also includes features that facilitate easy installation and maintenance, ensuring that it can be efficiently integrated into the vehicle’s fuel system ⁴.

Benefits

The advantages of using the 4364421 include improved fuel efficiency, enhanced engine performance, and increased reliability under demanding conditions. Its design ensures that the fuel system operates efficiently, contributing to the overall performance of the truck. Additionally, its durability and resistance to high pressures and temperatures make it a reliable component in the fuel system ¹.

Installation Considerations

Proper installation of the 4364421 is crucial for ensuring optimal performance and safety. It is important to follow the manufacturer’s guidelines for installation, including any specific requirements or precautions. This ensures that the fitting is correctly positioned and secured, allowing it to function effectively within the fuel system ².

Maintenance and Troubleshooting

Regular maintenance of the 4364421 is important for ensuring its continued performance and durability. This includes regular inspections to check for any signs of wear or damage. Common issues to watch for include leaks or blockages in the fuel system, which can affect the fitting’s performance. Troubleshooting steps may include checking the fitting’s connections and ensuring that it is securely installed ³.

Compatibility and Application

The 4364421 is suitable for use in various types of trucks and engines. Its design and functionality make it compatible with a range of applications, ensuring that it can be effectively integrated into different fuel systems ⁴.

Safety Precautions

When working with the 4364421, it is important to observe safety measures and precautions. This includes handling the fitting with care to avoid damage and being aware of the potential hazards associated with high-pressure fuel systems. Proper safety equipment should be used when working with the fitting, and any work should be carried out in a well-ventilated area ².

Cummins Overview

Cummins is a reputable manufacturer in the automotive and heavy-duty truck industry, known for its commitment to producing high-quality components. With a long history of innovation and excellence, Cummins has established itself as a leader in the industry, providing reliable and durable components for a wide range of applications ¹.

Compatibility with Cummins Engines

The High Pressure Fuel Fitting 4364421, manufactured by Cummins, is designed to integrate seamlessly with several of their engine models. This fitting is crucial for maintaining the integrity of the fuel system, ensuring that high-pressure fuel is delivered efficiently and safely.

G855 CM558 and GTA855 CM558 (CM2358)

The G855 CM558 and GTA855 CM558 (CM2358) engines are part of Cummins’ robust lineup, often utilized in heavy-duty applications. The 4364421 fitting is engineered to fit these engines, ensuring a secure connection that can withstand the high pressures and demands of these powerful units. Its design allows for easy installation and maintenance, which is critical for the operational efficiency of these engines ¹.

KTA19GC CM558

The KTA19GC CM558 engine also benefits from the 4364421 High Pressure Fuel Fitting. This engine, known for its reliability and performance, requires precise components to maintain its operational standards. The fitting’s compatibility with the KTA19GC CM558 ensures that the fuel system operates without leaks or failures, contributing to the engine’s longevity and performance ².

G101

The G101 engine, another member of Cummins’ extensive engine family, is also compatible with the 4364421 fitting. This compatibility ensures that the G101 engine can maintain its high-pressure fuel system integrity, which is essential for its performance and efficiency in various applications ³.

Each of these engines, while differing in specific applications and configurations, shares the need for reliable and high-performance components like the 4364421 High Pressure Fuel Fitting. This part’s design and compatibility with these engines highlight Cummins’ commitment to providing high-quality, reliable components for their engine lineup ⁴.

Role of Part 4364421 High Pressure Fuel Fitting in Engine Systems

The part 4364421 High Pressure Fuel Fitting is integral to the efficient operation of several key components within engine systems. Its primary function is to ensure a secure and leak-free connection between the high-pressure fuel lines and other critical components.

Integration with the Fuel Control Module

The Fuel Control Module (FCM) relies on consistent and precise fuel delivery to maintain optimal engine performance. The High Pressure Fuel Fitting interfaces directly with the FCM, providing a robust connection point for the high-pressure fuel lines. This ensures that the FCM receives a steady supply of fuel under the necessary pressure, allowing it to modulate fuel flow accurately in response to engine demands. The fitting’s design minimizes the risk of fuel leaks, which could otherwise disrupt the FCM’s operation and lead to inefficient fuel usage or potential safety hazards ².

Interaction with the Pressure Regulator Valve

The Pressure Regulator Valve (PRV) is responsible for maintaining the correct fuel pressure within the system. The High Pressure Fuel Fitting plays a significant role in this process by ensuring that the fuel lines connected to the PRV are secure and intact. This fitting allows the PRV to regulate fuel pressure effectively by providing a stable connection point. The fitting’s durability and precision engineering help prevent fluctuations in fuel pressure, which could otherwise affect engine performance and fuel efficiency ³.

Conclusion

In summary, the 4364421 High Pressure Fuel Fitting is a key component in maintaining the integrity and efficiency of the fuel delivery system, directly impacting the performance of the Fuel Control Module and the Pressure Regulator Valve. Its robust design, compatibility with various Cummins engines, and role in ensuring efficient fuel delivery make it an essential part of the engine system ¹²³⁴.