3967749
Air Inlet Pipe
Cummins®

The Cummins Air Inlet Pipe, part number 3967749, is a component designed for commercial truck operations. Cummins, a well-established name in the industry, produces a range of parts aimed at enhancing the performance and reliability of commercial vehicles. This part is integral to the engine system, ensuring efficient air delivery which is vital for optimal engine function.

Basic Concepts of Air Inlet Pipes

An air inlet pipe is a conduit that directs air from the outside environment into the engine’s intake system. Its function is to provide a smooth and uninterrupted flow of air to the engine, which is necessary for combustion. The quality and design of the air inlet pipe can influence engine performance, fuel efficiency, and overall durability of the engine system ¹.

Purpose of the Cummins Air Inlet Pipe

This Cummins part is specifically engineered to facilitate the flow of air into the engine of a truck. It ensures that the air entering the engine is clean and unobstructed, which helps in maintaining the engine’s efficiency and performance. By providing a direct and efficient pathway for air, this component plays a role in the engine’s ability to perform under various operating conditions.

Key Features

The 3967749 is constructed from durable materials that are resistant to the harsh conditions often encountered in commercial truck operations. Its design includes features that reduce turbulence and ensure a smooth airflow, which is beneficial for engine performance. Additionally, the pipe may incorporate elements that enhance its resistance to wear and environmental factors, contributing to its longevity and reliability ².

Benefits

The advantages of the 3967749 include improved engine efficiency due to optimized airflow, increased durability under demanding conditions, and enhanced performance of the engine system. These benefits contribute to the overall reliability and effectiveness of the truck’s engine, leading to better operational outcomes.

Installation Process

Installing this part requires following a series of steps to ensure proper fitting and function. The process involves preparing the engine compartment, aligning the pipe with the intake system, securing it in place with the appropriate fasteners, and verifying that there are no obstructions or leaks in the air pathway. Tools such as wrenches and possibly a torque wrench may be necessary to complete the installation.

Maintenance and Care

Regular maintenance of the 3967749 is important to ensure its continued performance and longevity. This includes periodic inspections for signs of wear or damage, cleaning the pipe to remove any debris that may have accumulated, and checking for proper alignment and secure fitting. Adhering to a maintenance schedule can help prevent issues and ensure the pipe remains in optimal condition ³.

Troubleshooting Common Issues

Common problems with air inlet pipes can include blockages, leaks, or damage to the pipe itself. Troubleshooting these issues involves inspecting the pipe for any visible signs of damage, checking for proper alignment and secure fitting, and ensuring there are no obstructions in the air pathway. Addressing these issues promptly can help maintain the efficiency and performance of the engine system.

Compatibility and Applications

The 3967749 is designed for use with specific types of trucks and engines. It is important to verify compatibility with the particular make and model of the truck to ensure proper function and integration within the engine system.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a history of innovation and a strong reputation in the commercial truck industry, Cummins is known for producing high-quality parts that enhance the performance and reliability of commercial vehicles.

Cummins Air Inlet Pipe 3967749 Compatibility

The Cummins Air Inlet Pipe part number 3967749 is designed to fit a variety of Cummins engines. This part is integral in ensuring that the engine receives the correct amount of air for optimal performance. Below is a detailed breakdown of the compatibility of this air inlet pipe with various Cummins engines:

ISB Series Engines

• ISB CM2150
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

The ISB series engines, known for their robust performance and reliability, are compatible with the air inlet pipe 3967749. This part ensures that the air intake system is properly sealed and efficient, contributing to the engine’s overall performance.

ISC Series Engines

• ISC CM2150
• ISC CM850
• ISC8.3 CM2250

The ISC series engines, which are often used in heavy-duty applications, also benefit from the air inlet pipe 3967749. This part is designed to fit seamlessly with the ISC engines, ensuring that the air intake system operates efficiently.

ISL Series Engines

• ISL CM2150
• ISL9 CM2150 SN
• ISL9 CM2250

The ISL series engines, known for their versatility and performance in various applications, are compatible with the air inlet pipe 3967749. This part ensures that the air intake system is properly configured for the specific needs of the ISL engines.

QSC and QSL Series Engines

• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

The QSC and QSL series engines, which are often used in both industrial and mobile applications, are also compatible with the air inlet pipe 3967749. This part is designed to fit these engines, ensuring that the air intake system is properly sealed and efficient.

By ensuring that the air inlet pipe 3967749 is correctly installed, engine performance can be optimized, and reliability can be maintained across these various Cummins engine models.

Role of Part 3967749 Air Inlet Pipe in Engine Systems

The 3967749 Air Inlet Pipe is an essential component in the air intake system of various engine setups. Its primary function is to facilitate the smooth and efficient transfer of air from the outside environment into the engine’s combustion chamber. This part ensures that the air, which is vital for the combustion process, reaches the engine in a controlled and measured manner.

In the context of the air intake system, the 3967749 Air Inlet Pipe connects to the air filter housing, which is the first stage in cleaning the incoming air of any debris or contaminants. Once the air has been filtered, it travels through the inlet pipe towards the throttle body. The throttle body regulates the amount of air that enters the engine based on the driver’s input via the accelerator pedal.

The design of the 3967749 Air Inlet Pipe is such that it minimizes turbulence and maximizes airflow efficiency. This is achieved through its smooth internal surface and optimized curvature, which help in reducing air resistance and ensuring a consistent flow of air into the engine. The pipe is also engineered to withstand the high temperatures and pressures associated with engine operation, ensuring durability and reliability over time.

Furthermore, the 3967749 Air Inlet Pipe plays a role in the overall acoustics of the engine system. By dampening certain frequencies, it helps in reducing the noise produced by the engine, contributing to a quieter and more pleasant driving experience.

Conclusion

In summary, the 3967749 Air Inlet Pipe is a key component that ensures the engine receives a steady and clean supply of air, which is fundamental for efficient combustion and optimal engine performance. Its design and features contribute to the overall efficiency, durability, and reliability of the engine system, making it a critical part for commercial truck operations.