3966424
Fuel Supply Tube
Cummins®

Introduction

The Fuel Supply Tube 3966424, manufactured by Cummins, is a critical component in the fuel systems of heavy-duty trucks. Designed to deliver fuel from the tank to the engine, this part ensures a consistent and reliable fuel supply under various operating conditions. Cummins, a renowned name in the diesel engine industry, emphasizes durability and efficiency in the production of this part.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube, like the 3966424, is a conduit within the fuel system that carries fuel from the tank to the engine. It maintains a continuous flow of fuel, essential for the engine’s operation. The tube’s design and material are chosen to withstand the pressures and temperatures within the fuel system, ensuring efficient and contamination-free fuel delivery ¹.

Role of the Fuel Supply Tube in Truck Operation

The 3966424 plays a crucial role in the operation of heavy-duty trucks by ensuring consistent fuel pressure and delivery to the engine. It works alongside other fuel system components, such as the fuel pump and filter, to maintain the necessary fuel pressure for optimal engine performance. The tube’s design is tailored to handle the demands of heavy-duty applications, contributing to the truck’s efficient operation under various conditions ².

Key Features of the Fuel Supply Tube 3966424

This Cummins part is characterized by several key features that enhance its performance and durability. It is made from high-quality materials resistant to diesel fuel’s corrosive effects and the high pressures within the fuel system. The tube’s design includes precise fittings and connections for a secure and leak-free installation. Additionally, it may feature reinforced sections to withstand the physical stresses encountered in heavy-duty truck applications.

Benefits of Using the Fuel Supply Tube 3966424

Incorporating the 3966424 into a truck’s fuel system offers several advantages. It contributes to improved fuel efficiency by ensuring unrestricted fuel delivery to the engine. This consistent fuel delivery supports enhanced engine performance, allowing the truck to operate more smoothly and with greater power. Furthermore, the durability and reliability of the tube increase the overall reliability of the truck’s fuel system, reducing the likelihood of fuel-related issues ³.

Troubleshooting and Maintenance

Common issues with the 3966424 may include leaks, blockages, or damage due to wear and tear. Regular inspection and maintenance are recommended to ensure optimal performance and longevity. Troubleshooting steps may involve checking for proper connections, inspecting the tube for signs of wear or damage, and ensuring that the fuel system is free of contaminants. Maintenance practices should include periodic replacement of the tube according to the manufacturer’s recommendations or as part of routine service intervals.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins has established itself as a leader in the diesel engine manufacturing industry, known for its commitment to innovation, quality, and customer satisfaction. The company’s expertise in engine technology and components, including the Fuel Supply Tube 3966424, underscores its dedication to providing reliable and efficient solutions for the automotive and heavy-duty truck sectors.

Cummins Engine Compatibility with Fuel Supply Tube Part 3966424

The Cummins Fuel Supply Tube part number 3966424 is designed to fit a variety of Cummins engines, ensuring a reliable fuel supply system across different engine models. This part is crucial for maintaining optimal engine performance and efficiency.

Engine Compatibility

• 4B3.9 and 6B5.9 Engines The 4B3.9 and 6B5.9 engines are part of Cummins’ B Series engines, known for their robust performance and reliability. The Fuel Supply Tube part 3966424 is specifically engineered to fit these engines, ensuring seamless integration and efficient fuel delivery.

• B4.5 Engine The B4.5 engine, another member of the B Series family, also benefits from the use of the Fuel Supply Tube part 3966424. This part is designed to meet the specific requirements of the B4.5 engine, providing a critical link in the fuel supply chain.

• QSB3.9 30 CM550 and QSB5.9 30 CM550 Engines The QSB3.9 30 CM550 and QSB5.9 30 CM550 engines are part of Cummins’ QSB Series, which are known for their versatility and power. The Fuel Supply Tube part 3966424 is compatible with these engines, ensuring that they receive the necessary fuel supply for optimal operation.

By ensuring that the Fuel Supply Tube part 3966424 is used with the appropriate engines, users can maintain the integrity of their fuel systems and ensure that their engines operate at peak efficiency.

Role of Part 3966424 Fuel Supply Tube in Engine Systems

The 3966424 Fuel Supply Tube is an essential component in the fuel delivery system of various engine setups. Its primary function is to transport fuel from the fuel tank to the fuel filter and subsequently to the fuel transfer pump.

Integration with Fuel Filter

The Fuel Supply Tube connects directly to the fuel filter, ensuring a steady and clean flow of fuel. The fuel filter’s role is to remove impurities and contaminants from the fuel before it reaches the engine. The seamless connection provided by the Fuel Supply Tube ensures that the fuel filter operates efficiently, maintaining the quality of fuel delivered to the engine.

Connection to Fuel Transfer Pump

Following the fuel filter, the Fuel Supply Tube interfaces with the fuel transfer pump. This pump is responsible for moving fuel from the tank to the engine’s fuel injection system or carburetor. The reliable connection offered by the Fuel Supply Tube is vital for consistent fuel pressure and flow, which are necessary for the pump’s optimal performance.

Ensuring Proper Fuel Location

The precise location of the Fuel Supply Tube within the engine system is designed to minimize fuel line restrictions and ensure that fuel reaches the engine components without interruption. This strategic placement helps in maintaining the engine’s performance and efficiency.

Overall Fuel System Functionality

In summary, the 3966424 Fuel Supply Tube plays a significant role in the overall functionality of the fuel system. It ensures a consistent and clean supply of fuel from the tank through the filter and to the transfer pump, supporting the engine’s reliable operation.

Conclusion

The 3966424 Fuel Supply Tube by Cummins is a vital component in the fuel systems of heavy-duty trucks, ensuring consistent and reliable fuel delivery to the engine. Its design and material are tailored to withstand the demands of heavy-duty applications, contributing to the truck’s efficient operation under various conditions. Regular maintenance and troubleshooting are essential to ensure the longevity and optimal performance of this part.