3955339
Exhaust Manifold Gasket
Cummins®

Introduction

The Exhaust Manifold Gasket 3955339 is a component designed by Cummins for use in heavy-duty trucks. This gasket plays a role in sealing the connection between the exhaust manifold and the engine block, ensuring that exhaust gases are directed efficiently away from the engine. Its proper function is integral to maintaining the engine’s performance and efficiency ¹.

Basic Concepts of Exhaust Manifold Gaskets

An exhaust manifold gasket is a sealing component positioned between the exhaust manifold and the engine block. Its function is to create a tight seal, preventing exhaust gases from escaping into the engine compartment. This seal is vital for maintaining the engine’s efficiency, as it ensures that exhaust gases are expelled through the exhaust system rather than leaking out elsewhere. The gasket must withstand high temperatures and pressures, as well as resist degradation over time to maintain its sealing properties ².

Purpose of the Exhaust Manifold Gasket 3955339

The Exhaust Manifold Gasket 3955339 is specifically engineered to meet the demanding requirements of heavy-duty truck engines. It plays a role in the engine’s exhaust system by providing a reliable seal that contributes to maintaining engine efficiency and performance. By ensuring that exhaust gases are properly directed away from the engine, this gasket helps in reducing backpressure, which can otherwise impede engine performance ³.

Key Features of the Exhaust Manifold Gasket 3955339

The Exhaust Manifold Gasket 3955339 is characterized by several key features that make it suitable for heavy-duty applications. It is constructed from materials that offer high resistance to thermal and mechanical stress, ensuring durability under extreme conditions. The design of the gasket allows for a precise fit, enhancing its sealing capabilities. Additionally, it is manufactured to meet stringent quality standards, ensuring reliability and performance in demanding environments.

Benefits of Using the Exhaust Manifold Gasket 3955339

Utilizing the Exhaust Manifold Gasket 3955339 offers several advantages. It contributes to improved engine performance by ensuring a secure seal that prevents exhaust gas leaks. The gasket’s durability and resistance to high temperatures and pressures make it a reliable component for heavy-duty engines. Its design and material composition also contribute to its longevity, reducing the need for frequent replacements.

Installation and Maintenance

Proper installation of the Exhaust Manifold Gasket 3955339 is crucial for ensuring its effectiveness. Preparation steps include cleaning the mating surfaces to remove any debris or old gasket material. Torque specifications should be followed to secure the exhaust manifold without overtightening, which could damage the gasket. Regular inspection and maintenance can help prolong the gasket’s lifespan, ensuring optimal performance. It is recommended to check the gasket condition during routine engine maintenance and replace it if signs of wear or damage are observed.

Troubleshooting Common Issues

Common problems associated with exhaust manifold gaskets include leaks or failures, which can lead to decreased engine performance and increased emissions. Troubleshooting steps may involve inspecting the gasket for signs of wear, checking for proper installation, and ensuring that the mating surfaces are clean and free of debris. Addressing these issues promptly can help maintain engine efficiency and prevent further damage.

Cummins: A Brief Overview

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 trusted provider of high-quality components for the automotive industry. Its commitment to innovation, quality, and customer satisfaction has made it a preferred choice for heavy-duty engine applications.

Compatibility with Various Engine Models

The Exhaust Manifold Gasket 3955339 is designed to fit a variety of Cummins engine models. This gasket is crucial for ensuring a proper seal between the exhaust manifold and the engine block, preventing leaks and maintaining optimal engine performance. Below is a detailed overview of the engines with which this gasket is compatible:

Cummins B Series Engines

• B4.5 RGT
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C

Cummins F Series Engines

• F3.8 F102

Cummins ISB Series Engines

• ISB (Chrysler)
• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118

Cummins ISBE Series Engines

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

Cummins ISC Series Engines

• ISC CM850

Cummins ISF Series Engines

• ISF3.8 CM2220 AN
• ISF4.5 CM2220 F123

Cummins ISL Series Engines

• ISL9 CM2150 SN

Cummins ISM Series Engines

• ISM CM570
• ISM CM876
• ISM11 CM876 SN

Cummins M11 Series Engines

• M11 CELECT PLUS

This gasket is engineered to provide a reliable seal, ensuring that the exhaust manifold is securely attached to the engine block. Its compatibility with a wide range of Cummins engines makes it a versatile and essential component for maintaining engine integrity and performance.

Role of Exhaust Manifold Gasket 3955339 in Engine Systems

The Exhaust Manifold Gasket (Part 3955339) is an essential component in ensuring the efficient and reliable operation of various engine systems. Its primary function is to create a seal between the exhaust manifold and the engine block, preventing exhaust gases from leaking into the engine compartment. This seal is vital for maintaining the integrity of the exhaust system and ensuring that exhaust gases are directed properly through the system.

In the context of an arrangement involving a turbocharger, the Exhaust Manifold Gasket plays a significant role. It ensures that the exhaust gases flow smoothly from the engine to the turbocharger, where they are used to spin the turbine and compress the intake air. A proper seal here is important for maximizing turbocharger efficiency and overall engine performance.

When considering the catalytic converter, the Exhaust Manifold Gasket helps maintain the correct backpressure in the exhaust system. This backpressure is necessary for the catalytic converter to operate efficiently, converting harmful exhaust gases into less harmful emissions.

In systems equipped with an exhaust recirculation cooler kit, the gasket ensures that exhaust gases are effectively recirculated and cooled before being reintroduced into the engine. This process helps reduce nitrogen oxides (NOx) emissions and improve overall engine efficiency.

The Exhaust Manifold Gasket is also a key component in the full engine gasket set and upper engine gasket kit. These kits are designed to provide comprehensive sealing solutions for various engine components, and the Exhaust Manifold Gasket is a critical part of this setup, ensuring that all gaskets work together seamlessly to maintain engine performance and reliability.

In exhaust manifold mounting systems, the gasket ensures that the manifold is securely attached to the engine block without any gaps that could allow exhaust gases to escape. This is particularly important in high-performance engines where exhaust gas temperatures and pressures are significantly higher.

For engines with an oil cooler repair kit or overhaul kit, the Exhaust Manifold Gasket contributes to the overall sealing integrity of the engine. Proper sealing is essential during an overhaul to ensure that the engine operates efficiently and reliably once reassembled.

Conclusion

The Exhaust Manifold Gasket 3955339 is a fundamental component in various engine systems, playing a significant role in maintaining the seal between the exhaust manifold and the engine block. This ensures efficient exhaust gas flow, proper backpressure for catalytic converters, effective recirculation in EGR systems, and overall engine sealing integrity in comprehensive gasket sets and repair kits.