3688347
Intake Manifold Gasket
Cummins®

Introduction

The Cummins 3688347 Intake Manifold Gasket is a critical component designed for heavy-duty trucks. It ensures a proper seal between the intake manifold and the engine block, which is essential for efficient engine operation. This seal prevents air leaks that could disrupt the air-fuel mixture and affect engine performance ¹.

Basic Concepts of Intake Manifold Gaskets

An intake manifold gasket is a sealing component placed between the intake manifold and the engine block. Its primary function is to create an airtight seal, which is necessary for the proper distribution of the air-fuel mixture to the engine’s cylinders. The gasket’s role in maintaining engine efficiency and performance is crucial, as any breach in the seal can lead to a loss of compression, reduced power output, and increased emissions ².

Role of the 3688347 Intake Manifold Gasket

The Cummins 3688347 Intake Manifold Gasket facilitates the sealing process between the intake manifold and the engine block. This gasket ensures that the air-fuel mixture is delivered to the cylinders without any leaks, which is crucial for maintaining the engine’s performance and efficiency. By providing a reliable seal, the gasket contributes to the overall stability and reliability of the engine’s operation ³.

Key Features

The Cummins 3688347 Intake Manifold Gasket is characterized by several key features that enhance its performance and durability. These include:

• Material Composition: Designed to withstand high temperatures and pressures.
• Precise Design: Ensures a perfect fit and seal.
• Unique Attributes: May include multi-layer construction or heat-resistant coatings for improved performance under demanding conditions.

Benefits

Using the Cummins 3688347 Intake Manifold Gasket offers several benefits:

• Improved Engine Performance: Due to a more consistent air-fuel mixture.
• Enhanced Fuel Efficiency: As a result of reduced air leaks.
• Decreased Risk of Leaks: Which can lead to engine damage.
• Durable Construction: Contributes to its longevity, providing reliable service over the vehicle’s lifespan.

Troubleshooting and Maintenance

Common issues with intake manifold gaskets can include leaks, which may manifest as rough idling, decreased power, or increased emissions. Troubleshooting these problems often involves inspecting the gasket for signs of wear or damage and ensuring that it is properly installed. Regular maintenance, such as checking for leaks and replacing the gasket as part of routine engine servicing, can help ensure the longevity and effectiveness of the gasket.

About Cummins

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 strong reputation in the industry, Cummins is committed to producing high-quality automotive components that meet the demanding requirements of heavy-duty applications. The company’s dedication to excellence is reflected in its wide range of products, including the Cummins 3688347 Intake Manifold Gasket.

Compatibility

The Cummins Intake Manifold Gasket part number 3688347 is designed to fit a variety of Cummins engines, ensuring a proper seal between the intake manifold and the engine block. This gasket is crucial for maintaining engine efficiency and preventing leaks. Below is a detailed look at the compatibility of this gasket with the specified engines:

ISX15 Series

• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

QSX15 Series

• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

X15 Series

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

Each of these engines benefits from the use of the Cummins Intake Manifold Gasket part number 3688347, ensuring that the intake manifold is properly sealed and the engine operates at peak efficiency.

Role of Part 3688347 Intake Manifold Gasket in Engine Systems

The Intake Manifold Gasket (Part 3688347) is a pivotal component in ensuring the efficient operation of various engine systems. It acts as a seal between the intake manifold and the engine block or cylinder head, preventing air and fuel mixture leaks. This gasket is integral to the following components and systems:

Air Intake System

In the Air Intake system, the intake manifold gasket ensures a secure connection, allowing the air-fuel mixture to flow smoothly from the air intake to the combustion chambers. This is essential for maintaining the correct air-fuel ratio, which is vital for optimal engine performance and fuel efficiency.

Manifold and Cylinder Head Assembly

When paired with the Manifold and Cylinder Head Gasket Kit, the intake manifold gasket forms a comprehensive sealing solution. It prevents any cross-contamination between the coolant and the air-fuel mixture, ensuring that the engine operates within safe thermal parameters. This is particularly important in engines with integrated air heater starting systems, where precise temperature control is necessary for effective cold-start performance.

Overhaul and Upper Engine Gasket Sets

In the context of an Overhaul Kit or an Upper Engine Gasket Set/Kit, the intake manifold gasket is often included to ensure a complete sealing solution during engine rebuilds. Its role is to maintain the integrity of the upper engine components, facilitating a leak-free environment that is essential for the longevity and reliability of the engine.

Air Heater Starting System

For engines equipped with an Air Heater Starting system, the intake manifold gasket ensures that the heated air is effectively channeled into the combustion chambers. This is vital for consistent engine starts in cold conditions, as it helps in achieving the necessary combustion temperatures more rapidly.

Conclusion

In summary, the intake manifold gasket (Part 3688347) is a fundamental component that enhances the functionality and efficiency of various engine systems by providing reliable seals and preventing leaks. Its role in maintaining engine performance, fuel efficiency, and reliability cannot be overstated.