3918350
Air Transfer Pipe
Cummins®

The Cummins 3918350 Air Transfer Pipe is a component designed for use in commercial trucks. It serves a specific function within the truck’s air system, contributing to the overall efficiency and performance of the vehicle. Understanding its purpose and operation is key to maintaining the air system’s integrity and ensuring the truck operates smoothly.

Basic Concepts of Air Transfer Pipes

An Air Transfer Pipe is a conduit that facilitates the movement of air within a truck’s air system. It plays a role in directing air from one component to another, ensuring that air-dependent systems receive the necessary airflow to function correctly. The efficiency of air flow is vital for the performance of brakes, suspensions, and other air-operated systems in commercial trucks. Proper air flow management helps in maintaining system pressure and responsiveness ¹.

Purpose of the Cummins 3918350 Air Transfer Pipe

The Cummins 3918350 Air Transfer Pipe is engineered to direct and regulate air flow within the truck’s air system. It connects various components, allowing for the efficient transfer of air. This part ensures that air reaches its intended destination without unnecessary loss of pressure or volume, which is crucial for the operation of air brakes and other pneumatic systems ².

Key Features

The Cummins 3918350 Air Transfer Pipe is characterized by its robust design and the materials used in its construction. It is made from durable materials that can withstand the pressures and temperatures encountered in a truck’s air system. The pipe’s design includes features that enhance its performance, such as smooth internal surfaces to minimize air resistance and secure connection points to prevent leaks ³.

Benefits

The use of the Cummins 3918350 Air Transfer Pipe offers several advantages. It contributes to improved air system efficiency by ensuring a consistent and reliable air flow. Its durable construction leads to enhanced longevity, reducing the frequency of replacements. Additionally, by maintaining optimal air system performance, it can lead to potential cost savings for fleet operators through reduced maintenance and repair needs.

Installation Considerations

When installing the Cummins 3918350 Air Transfer Pipe, it is important to follow the manufacturer’s guidelines to ensure proper fit and function. This includes verifying that all connections are secure and that the pipe is correctly aligned with other components in the air system. Adhering to these installation procedures helps in achieving the desired performance and durability from the part.

Troubleshooting and Maintenance

Regular inspection of the Cummins 3918350 Air Transfer Pipe can help in identifying common issues such as leaks or blockages. Maintenance practices should include checking for signs of wear or damage and ensuring that all connections remain tight. Addressing these issues promptly can help in maintaining the air system’s efficiency and preventing more significant problems down the line.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong presence in the commercial truck industry, Cummins is known for its innovative products and commitment to quality. The company’s extensive range of offerings includes components and systems that enhance the performance and reliability of commercial vehicles.

Air Transfer Pipe (Part 3918350) Compatibility with Cummins Engines

The Air Transfer Pipe, identified by the part number 3918350, is a crucial component in the air intake system of various Cummins engines. This part is designed to facilitate the transfer of air from the turbocharger to the engine’s intake manifold, ensuring optimal air flow and engine performance. Below is a detailed description of how this part fits with the listed Cummins engines:

6B5.9 and 6C8.3 Engines

The Air Transfer Pipe is compatible with the 6B5.9 and 6C8.3 engines. These engines are known for their robust design and are often used in heavy-duty applications. The pipe ensures that the air intake system operates efficiently, contributing to the overall performance and reliability of these engines.

B5.9 G, B5.9 GAS PLUS CM556, and C GAS PLUS CM556 Engines

For the B5.9 G, B5.9 GAS PLUS CM556, and C GAS PLUS CM556 engines, the Air Transfer Pipe is an essential part of the air intake system. These engines are designed for gas applications, and the pipe ensures that the air intake system functions correctly, providing the necessary air flow for optimal engine performance.

C8.3 G and ISB CM2150 Engines

The Air Transfer Pipe fits seamlessly with the C8.3 G and ISB CM2150 engines. These engines are part of Cummins’ lineup of high-performance diesel engines, and the pipe plays a critical role in maintaining the efficiency of the air intake system.

ISB CM550, ISB CM850, and ISBE CM2150 Engines

The ISB CM550, ISB CM850, and ISBE CM2150 engines are designed for various applications, from commercial to industrial use. The Air Transfer Pipe is a key component in these engines, ensuring that the air intake system operates smoothly and efficiently.

ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, ISB6.7 CM2350 B101, and ISB6.7 G CM2180 B118 Engines

These engines, including the ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, ISB6.7 CM2350 B101, and ISB6.7 G CM2180 B118, are part of Cummins’ 6.7-liter engine family. The Air Transfer Pipe is designed to fit these engines, ensuring that the air intake system functions correctly and efficiently.

ISBE4 CM850, ISC CM2150, ISC CM554, ISC CM850, ISL CM2150, ISL CM554, ISL G CM2180, and ISL9 CM2150 SN Engines

The Air Transfer Pipe is compatible with the ISBE4 CM850, ISC CM2150, ISC CM554, ISC CM850, ISL CM2150, ISL CM554, ISL G CM2180, and ISL9 CM2150 SN engines. These engines are designed for a range of applications, and the pipe ensures that the air intake system operates efficiently, contributing to the overall performance and reliability of these engines.

ISM CM570, ISM CM570/870, and ISM CM876 Engines

The Air Transfer Pipe fits the ISM CM570, ISM CM570/870, and ISM CM876 engines. These engines are part of Cummins’ medium-duty engine lineup, and the pipe ensures that the air intake system functions correctly, providing the necessary air flow for optimal engine performance.

In summary, the Air Transfer Pipe (Part 3918350) is a versatile and essential component that fits a wide range of Cummins engines, ensuring efficient air flow and optimal engine performance across various applications.

Role of Part 3918350 Air Transfer Pipe in Engine Systems

The part 3918350 Air Transfer Pipe is an essential component in the efficient operation of various engine systems. It facilitates the smooth transfer of air between different parts of the engine, ensuring optimal performance and reliability.

Air Intake System Integration

In the air intake system, the 3918350 Air Transfer Pipe connects the air filter to the throttle body. This connection ensures that clean, filtered air is delivered to the engine cylinders. The pipe’s design minimizes turbulence and pressure loss, allowing for a steady airflow that enhances combustion efficiency.

Intercooler Connection

For turbocharged engines, the 3918350 Air Transfer Pipe often connects the intercooler to the intake manifold. This setup allows cooled air from the intercooler to be transferred to the engine, improving air density and overall engine performance. The pipe’s robust construction withstands the high pressures and temperatures associated with turbocharged systems.

Secondary Air Injection

In systems equipped with secondary air injection, the 3918350 Air Transfer Pipe plays a role in directing additional air into the exhaust stream during cold starts. This helps reduce emissions by ensuring complete combustion of fuel. The pipe ensures that the secondary air is introduced at the correct point in the exhaust system, optimizing its effectiveness.

Turbocharger Bypass

In some engine configurations, the 3918350 Air Transfer Pipe is used in the turbocharger bypass system. It allows excess boost pressure to be redirected, preventing over-pressurization and potential damage to the engine. The pipe’s precise engineering ensures that the bypass function operates smoothly under varying engine loads.

Breather System

The 3918350 Air Transfer Pipe also finds application in the crankcase breather system. It connects the crankcase to the intake tract, allowing pressurized gases to be vented safely. This helps maintain proper crankcase pressure and prevents oil contamination in the intake system.

Charge Air Cooler Connection

In engines with charge air coolers (intercoolers), the 3918350 Air Transfer Pipe connects the cooler to the intake manifold. This ensures that the cooled charge air is efficiently transferred to the engine, enhancing power output and fuel efficiency. The pipe’s design minimizes heat transfer, maintaining the cooled air temperature.

Turbocharger to Intake Manifold

For direct-mounted turbochargers, the 3918350 Air Transfer Pipe connects the turbocharger outlet to the intake manifold. This direct connection reduces lag and improves throttle response by ensuring a rapid delivery of boosted air to the engine cylinders.

Summary

The 3918350 Air Transfer Pipe is a versatile component that enhances the performance and efficiency of various engine systems. Its role in facilitating the smooth transfer of air between critical components ensures that the engine operates at its best, delivering power, efficiency, and reliability.

Conclusion

The Cummins 3918350 Air Transfer Pipe is a critical component in the air system of commercial trucks and various Cummins engines. Its design and construction ensure efficient air flow, contributing to the overall performance and reliability of the vehicle. Proper installation, maintenance, and understanding of its role in the engine system are essential for maximizing its benefits and ensuring the longevity of the air system.