4999056
Air Crossover Connection
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$2,099.95 $2,498.94

Oversize Item

This is an oversize product. Additional shipping fees may apply.

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

The Cummins 4999056 Air Crossover Connection is a component designed for use in the pneumatic systems of commercial trucks. Its purpose is to facilitate the efficient distribution of compressed air throughout the truck’s various systems. This part plays a role in the engine cooling system by ensuring that the pneumatic system operates smoothly, supporting functions such as braking, suspension, and other air-operated components 1.

Basic Concepts of Air Crossover Connection

Air crossover connections in pneumatic systems are designed to route compressed air from one part of the system to another. They ensure that air is distributed evenly and efficiently to all components that require it. By connecting different sections of the pneumatic system, these crossovers help maintain consistent air pressure and flow, which is vital for the proper operation of air-dependent truck systems 2.

Purpose and Function

The 4999056 Air Crossover Connection serves a specific role within a truck’s pneumatic system. It connects different air lines, allowing for the transfer of compressed air between them. This connection ensures that air-operated components receive the necessary pressure to function correctly. By integrating into the pneumatic system, it supports the operation of brakes, suspension systems, and other air-dependent mechanisms, contributing to the overall performance and safety of the truck 3.

Key Features

The Cummins 4999056 Air Crossover Connection is characterized by its robust design and the materials used in its construction. Typically made from durable materials such as metal or high-grade plastic, it is built to withstand the pressures and conditions within a truck’s pneumatic system. Its design ensures a secure connection between air lines, minimizing the risk of leaks and ensuring efficient air distribution.

Benefits

The use of the 4999056 Air Crossover Connection offers several advantages. It enhances the efficiency of air distribution within the truck’s pneumatic system, leading to improved performance of air-operated components. Additionally, its reliable design contributes to the overall reliability of the truck’s pneumatic system, potentially reducing maintenance needs and operational costs for fleet operators.

Installation and Integration

Proper installation of the 4999056 Air Crossover Connection is crucial for its effective operation. It should be integrated into the truck’s pneumatic system according to the manufacturer’s guidelines. This may involve ensuring that all connections are secure and that the crossover is correctly positioned to facilitate efficient air flow. Preparations may include cleaning the connection points and inspecting the air lines for any damage or obstructions.

Troubleshooting Common Issues

Common issues with the 4999056 Air Crossover Connection may include leaks, blockages, or connection failures. Troubleshooting these problems involves inspecting the connection for signs of wear or damage, ensuring that all connections are tight, and checking for obstructions in the air lines. Solutions may range from tightening connections to replacing damaged components to ensure the pneumatic system operates efficiently.

Maintenance Tips

Routine maintenance of the 4999056 Air Crossover Connection is important for its longevity and performance. This includes regular inspections for signs of wear or damage, cleaning the connection points to remove any debris, and ensuring that all connections remain secure. Adhering to recommended inspection intervals and maintenance procedures can help prevent issues and ensure the component continues to function effectively.

Cummins Overview

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 broad product range, Cummins has established a reputation for quality and reliability in the commercial truck industry. The company’s commitment to excellence is reflected in its products, including the 4999056 Air Crossover Connection, which is designed to meet the demanding requirements of commercial vehicle operations.

Cummins Engine Part 4999056: Air Crossover Connection

The Cummins part number 4999056, identified as an Air Crossover Connection, is a component in the air management systems of several Cummins diesel engines. This part is integral to ensuring the efficient and reliable operation of the engines by facilitating the proper distribution of air within the engine’s intake system.

Application in Cummins Engines

QSK60 Engine Series

The Air Crossover Connection part 4999056 is specifically designed to fit within the QSK60 engine series. This series is known for its robust design and high performance, making it suitable for a variety of heavy-duty applications, including marine, stationary power, and industrial uses. The part’s role in this engine series is to connect different sections of the air intake system, ensuring that air is evenly distributed to the engine’s cylinders. This even distribution is crucial for maintaining optimal combustion efficiency and reducing emissions.

CM500 Engine Series

Similarly, the Air Crossover Connection part 4999056 is also compatible with the CM500 engine series. The CM500 engines are recognized for their versatility and reliability, often used in construction equipment, agricultural machinery, and other demanding applications. In this series, the part ensures that the air intake system operates smoothly, contributing to the engine’s overall performance and longevity.

Importance of the Air Crossover Connection

The Air Crossover Connection part 4999056 plays a role in the overall functionality of the Cummins engines. By providing a secure and efficient connection between different parts of the air intake system, it helps maintain the engine’s performance and efficiency. This part is designed to withstand the harsh conditions typically encountered in heavy-duty applications, ensuring durability and reliability over time.

Compatibility and Installation

When installing the Air Crossover Connection part 4999056, it is essential to follow the manufacturer’s guidelines to ensure proper fitment and function. This part is engineered to integrate seamlessly with the engine’s existing air management system, facilitating easy installation and maintenance. Proper installation is critical to maintaining the engine’s performance and preventing potential issues related to air distribution.

Role of Part 4999056 Air Crossover Connection in Engine Systems

The 4999056 Air Crossover Connection is a component in the air management system of various engine setups. It facilitates the efficient distribution of air between different parts of the engine, ensuring optimal performance and reliability.

Integration with the Aftercooler

In systems equipped with an aftercooler, the 4999056 Air Crossover Connection plays a role. It connects the aftercooler to other components, allowing for the even distribution of cooled air. This ensures that the air entering the engine is at the desired temperature, which is vital for maintaining engine efficiency and preventing overheating. The connection helps in balancing the air pressure on both sides of the aftercooler, enhancing the overall cooling process and contributing to consistent engine performance.

Enhanced Airflow Management

The Air Crossover Connection is designed to manage airflow effectively between various engine components. By providing a direct and secure pathway for air, it reduces the risk of leaks and ensures that air is delivered where it is needed most. This component is particularly important in high-performance engines where precise air management can significantly impact engine output and reliability.

Support for Turbocharged Systems

In turbocharged engine systems, the 4999056 Air Crossover Connection assists in managing the increased airflow demands. It helps in directing the pressurized air from the turbocharger to the intake manifold and other critical areas, ensuring that the engine receives a consistent supply of air. This is essential for maintaining the turbo’s efficiency and preventing issues such as turbo lag or uneven air distribution.

Contribution to Overall Engine Efficiency

By ensuring that air is distributed evenly and efficiently throughout the engine system, the 4999056 Air Crossover Connection contributes to the engine’s overall efficiency. It helps in maintaining the correct air-fuel ratio, which is essential for combustion efficiency and reducing emissions. Additionally, it supports the engine’s ability to operate smoothly under various conditions, from idle to full throttle.

Conclusion

The Cummins part number 4999056, an Air Crossover Connection, is a key component in the air management systems of the QSK60 and CM500 engine series. Its role in ensuring even air distribution is crucial for maintaining optimal engine performance and efficiency. Proper installation and maintenance of this part are essential for the longevity and reliability of the engines. The 4999056 Air Crossover Connection not only enhances the efficiency of air distribution within the truck’s pneumatic system but also contributes to the overall reliability and performance of the engine systems it serves.


  1. The Automotive Transmission Book Powertrain, Robert Fischer, Ferit Kucukay, Gunter Jurgens, Rolf Najork, and Burkhard Pollak, Springer, 2015.

  2. The Repair of Vehicle Bodies Fifth Edition, Alan Robinson and Andrew Livesey, Elsevier, 2006.

  3. Fundamentals of Automotive and Engine Technology: Standard Drives, Hybrid Drives, Brakes, Safety Systems, Konrad Reif Ed, Springer Vieweg, 2014.

SPECIFICATIONS

Package Dimensions
85.5 x 36.0 x 26.5 in
Weight
13.375 lb
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.