3964070
Exhaust Manifold
Cummins®

The Cummins 3964070 Exhaust Manifold is a component designed for use in heavy-duty trucks. It serves a significant role in the engine’s exhaust system by channeling exhaust gases away from the engine cylinders. This part is integral to maintaining the efficiency and performance of the truck’s engine.

Basic Concepts of Exhaust Manifolds

An exhaust manifold is a part of an engine’s exhaust system that collects exhaust gases from the cylinders and directs them into the exhaust pipe. It is typically made from cast iron or stainless steel to withstand high temperatures and pressures. The manifold plays a role in the engine’s operation by ensuring that exhaust gases are efficiently expelled, which helps to maintain engine performance and reduce emissions ¹.

Purpose of the Cummins 3964070 Exhaust Manifold

The Cummins 3964070 Exhaust Manifold is specifically designed to fit certain Cummins engines found in heavy-duty trucks. Its primary function is to route exhaust gases from the engine cylinders to the exhaust system. By doing so, it helps to maintain engine efficiency and reduce backpressure, which can otherwise hinder engine performance ².

Key Features

The Cummins 3964070 Exhaust Manifold is characterized by its robust design and the materials used in its construction. It is typically made from high-quality cast iron or stainless steel, which provides durability and resistance to high temperatures. The manifold is designed to fit precisely with the engine it is intended for, ensuring a secure and efficient connection.

Benefits

The Cummins 3964070 Exhaust Manifold offers several benefits. It contributes to improved engine efficiency by ensuring that exhaust gases are expelled effectively. This can lead to better overall performance of the engine. Additionally, by reducing backpressure, the manifold helps to lower emissions. Its durable construction ensures longevity, providing reliable service over the lifespan of the vehicle ³.

Installation Considerations

When installing the Cummins 3964070 Exhaust Manifold, it is important to follow the manufacturer’s guidelines to ensure proper fit and function. This may include using the correct gaskets and ensuring that all connections are secure. Proper installation is key to achieving optimal performance and longevity of the manifold.

Common Issues and Troubleshooting

Common issues with the Cummins 3964070 Exhaust Manifold may include leaks or cracks, which can affect engine performance and increase emissions. Regular inspection can help identify these issues early. If a leak or crack is detected, it is recommended to replace the manifold to maintain engine efficiency and safety.

Maintenance Tips

To keep the Cummins 3964070 Exhaust Manifold in optimal condition, regular inspections are recommended. This includes checking for signs of wear, leaks, or damage. Cleaning the manifold as part of routine engine maintenance can also help prevent buildup that may affect performance. Following these practices can contribute to the longevity and efficiency of the manifold.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a commitment to quality, Cummins has established a reputation for producing reliable and efficient diesel engines and related components. The company’s focus on technological advancement and customer satisfaction underscores its position in the industry.

Exhaust Manifold 3964070 Compatibility with Cummins Engines

The Cummins Exhaust Manifold part number 3964070 is designed to fit a variety of Cummins engines, ensuring efficient exhaust gas management and optimal engine performance. Below is a detailed overview of its compatibility with specific engine models:

ISC CM554 and ISL CM554 Engines

The Exhaust Manifold 3964070 is compatible with both the ISC CM554 and ISL CM554 engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The manifold’s design ensures a seamless fit, facilitating proper exhaust flow and reducing back pressure, which enhances engine efficiency and power output.

QSC8.3 CM554 and QSL9 CM554 Engines

Similarly, the Exhaust Manifold 3964070 is also suitable for the QSC8.3 CM554 and QSL9 CM554 engines. These engines are part of Cummins’ QSL series, recognized for their high torque and durability. The manifold’s precise engineering guarantees a perfect match, contributing to the engines’ overall performance by ensuring efficient exhaust gas evacuation.

ISL9 CM2150 SN and L8.9 Engines

The Exhaust Manifold 3964070 also fits the ISL9 CM2150 SN engine. This engine is a high-output variant, often used in demanding applications requiring substantial power and reliability. The manifold’s design is tailored to handle the exhaust demands of this engine, ensuring optimal performance and longevity.

Compatibility Summary

• ISC CM554
• ISL CM554
• QSC8.3 CM554
• QSL9 CM554
• ISL9 CM2150 SN
• L8.9

The Exhaust Manifold 3964070 is engineered to provide a reliable and efficient solution for managing exhaust gases across these Cummins engine models, ensuring peak performance and durability.

Role of Part 3964070 Exhaust Manifold in Engine Systems

The Exhaust Manifold, designated as part 3964070, is integral to the efficient operation of engine systems, particularly when paired with turbochargers. This component is responsible for collecting exhaust gases from the engine’s cylinders and directing them towards the turbocharger.

In a Turbocharger Arrangement, the Exhaust Manifold plays a significant role. As the engine operates, it produces exhaust gases that exit through the exhaust ports. These gases are then channeled into the Exhaust Manifold, where they are collected and funneled towards the turbocharger. The turbocharger uses the energy from these exhaust gases to spin a turbine, which in turn drives a compressor. This compressor forces more air into the engine’s combustion chambers, enhancing the engine’s performance and efficiency.

The design and arrangement of the Exhaust Manifold are tailored to optimize the flow of exhaust gases. This ensures that the turbocharger receives a consistent and powerful stream of exhaust, which is essential for its efficient operation. The Manifold’s structure also helps in reducing backpressure, which can otherwise impede the engine’s performance.

Conclusion

In summary, the Exhaust Manifold (part 3964070) is a key component in the engine system, especially in setups involving turbochargers. Its role in managing exhaust gases is vital for the turbocharger’s function, ultimately contributing to the engine’s overall performance and efficiency.