4949683
Air Inlet Adapter
Cummins®

The 4949683 Air Inlet Adapter is a component designed by Cummins, a leading manufacturer in the commercial truck industry. This adapter plays a role in the air intake system of trucks, facilitating the efficient flow of air into the engine. Cummins is renowned for its high-quality engine components and systems, providing reliable solutions for commercial vehicle operators ¹.

Basic Concepts of Air Inlet Adapters

An Air Inlet Adapter serves as a connector between the air intake system and the engine. Its function is to ensure a smooth and uninterrupted flow of air into the engine, which is vital for combustion efficiency. The adapter is positioned to direct air from the intake system to the engine’s air filter and turbocharger (if equipped), playing a part in maintaining optimal engine performance and efficiency ².

Purpose of the 4949683 Air Inlet Adapter

The 4949683 Air Inlet Adapter is specifically designed to integrate into the air intake system of trucks, ensuring that air reaches the engine in a controlled and efficient manner. This adapter contributes to engine performance by maintaining a consistent air supply, which is necessary for the combustion process. It also helps in reducing air turbulence, which can lead to more stable engine operation ³.

Key Features

The 4949683 Air Inlet Adapter is constructed from durable materials, ensuring it can withstand the harsh conditions often encountered in commercial truck operations. Its design includes features that enhance its performance and longevity, such as a precise fit to prevent air leaks and a robust construction to resist wear and tear. These attributes contribute to the adapter’s reliability and efficiency in demanding environments ⁴.

Benefits

Using the 4949683 Air Inlet Adapter can lead to improved engine efficiency, as it ensures a steady and clean air supply to the engine. This can result in better fuel economy and reduced emissions. Additionally, the adapter’s durable construction contributes to its longevity, potentially offering cost savings for fleet operators through reduced maintenance and replacement needs ⁵.

Installation Process

Installing the 4949683 Air Inlet Adapter requires careful attention to ensure it fits correctly and functions as intended. The process involves disconnecting the existing air intake components, positioning the adapter in place, and securing it with the appropriate fasteners. It is important to follow the manufacturer’s guidelines to ensure a proper fit and function, which may include using specific tools and checking for proper alignment ⁶.

Troubleshooting Common Issues

Common issues with the 4949683 Air Inlet Adapter may include air leaks or reduced performance. These can often be traced to improper installation or wear and tear. Troubleshooting steps may involve inspecting the adapter for signs of damage, ensuring it is securely fastened, and checking for any obstructions in the air intake path. Addressing these issues promptly can help maintain engine performance and efficiency ⁷.

Maintenance Tips

Regular maintenance of the 4949683 Air Inlet Adapter is important for ensuring its longevity and optimal performance. This includes periodic inspection for signs of wear or damage, cleaning to remove any debris that may accumulate, and following the manufacturer’s guidelines for replacement if necessary. Proper maintenance can help prevent issues and ensure the adapter continues to function effectively ⁸.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the commercial truck industry. The company offers a wide range of products and services designed to meet the needs of commercial vehicle operators, emphasizing reliability, efficiency, and performance ⁹.

Cummins Air Inlet Adapter 4949683 Compatibility

The Cummins Air Inlet Adapter part number 4949683 is designed to fit a variety of Cummins engine models. This adapter is crucial for ensuring proper airflow into the engine, which is essential for optimal performance and efficiency. Here is a detailed look at the compatibility of this part with various Cummins engines:

ISX Series Engines

• ISX CM871
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

The ISX series engines, including the ISX CM871, ISX12/ISX11.9 CM2250, ISX15 CM2250, ISX15 CM2250 SN, and ISX15 CM2350 X101, are all compatible with the Air Inlet Adapter 4949683. These engines are known for their robust performance and are commonly used in heavy-duty applications.

ISG and ISM Series Engines

• ISG12 CM2880 G107
• ISM CM876

The ISG12 CM2880 G107 and ISM CM876 engines are also compatible with the Air Inlet Adapter 4949683. These engines are typically used in various industrial applications, providing reliable power and efficiency.

QSX and X Series Engines

• QSX15 CM2250 ECF
• QSG12/X12 CM2350 G110
• X12 CM2350 X119B
• X12 CM2670 X121B
• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

The QSX15 CM2250 ECF, QSG12/X12 CM2350 G110, X12 CM2350 X119B, X12 CM2670 X121B, X15 CM2350 X116B, X15 CM2350 X123B, and X15 CM2450 X134B engines are all compatible with the Air Inlet Adapter 4949683. These engines are designed for a range of applications, from on-highway to off-highway uses, and are known for their durability and performance.

By ensuring that the Air Inlet Adapter 4949683 is correctly installed, users can maintain the integrity of the engine’s air intake system, which is vital for the engine’s overall performance and longevity ¹⁰.

Role of Part 4949683 Air Inlet Adapter in Engine Systems

The part 4949683 Air Inlet Adapter is an essential component in the air intake system of various engine setups. It serves as a pivotal connection point between the air intake and the engine’s air filtration system. This adapter ensures a secure and efficient transition of air from the intake to the filtration components, optimizing the airflow into the engine.

In the context of the air intake system, the adapter facilitates the smooth passage of air, minimizing turbulence and ensuring that the air entering the engine is clean and unobstructed. This is achieved by aligning perfectly with the intake manifold and the air filter housing, allowing for a seamless integration into the engine’s respiratory system.

Furthermore, the adapter plays a significant role in maintaining the integrity of the air-fuel mixture. By providing a consistent and regulated airflow, it contributes to the engine’s overall performance, efficiency, and emissions control. The precise fitting of the adapter ensures that the air intake system operates within the designed parameters, enhancing the engine’s responsiveness and power output.

In summary, the part 4949683 Air Inlet Adapter is a key component that enhances the functionality and performance of the air intake system in engine applications. Its role in connecting and optimizing the airflow between the intake and filtration systems is fundamental to the efficient operation of the engine ¹¹.

Conclusion

The 4949683 Air Inlet Adapter is a critical component in the air intake system of Cummins engines, designed to ensure efficient airflow and optimal engine performance. Its durable construction, precise fit, and compatibility with various Cummins engine models make it a reliable choice for commercial vehicle operators. Proper installation, maintenance, and troubleshooting are essential to maximize the benefits of this Cummins part, contributing to improved engine efficiency, fuel economy, and reduced emissions.