4390126
Exhaust Outlet Connection
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$7,299.95 $8,686.94

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

Introduction

The Exhaust Outlet Connection, part number 4390126, is a component designed for use in the exhaust systems of commercial trucks. Its purpose is to facilitate the efficient routing of exhaust gases away from the engine. This Cummins part plays a role in maintaining the performance and efficiency of the truck’s engine by ensuring that exhaust gases are properly directed and managed.

Basic Concepts of Exhaust Outlet Connection

An Exhaust Outlet Connection serves as a junction in the exhaust system, connecting various components such as the exhaust manifold, catalytic converter, and muffler. Its function is to provide a secure and leak-free passage for exhaust gases from the engine to the rest of the exhaust system. This connection contributes to the overall performance and efficiency of the truck’s engine by ensuring that exhaust gases are effectively managed and expelled 1.

Purpose of the 4390126 Exhaust Outlet Connection

The 4390126 Exhaust Outlet Connection is specifically designed to play a role in the operation of a truck by directing exhaust gases away from the engine. This part ensures that the gases are channeled efficiently through the exhaust system, which helps in reducing backpressure and improving engine performance. By providing a reliable connection point, it also contributes to the durability and longevity of the exhaust system components 2.

Key Features

The 4390126 Exhaust Outlet Connection boasts several key features that enhance its performance and durability. These include a robust material composition, typically made from high-quality steel or cast iron, which provides resistance to corrosion and high temperatures. The design elements of this connection are engineered to ensure a secure fit and seal, minimizing the risk of leaks. Additionally, it may feature unique characteristics such as integrated gaskets or sealing surfaces that further enhance its reliability 3.

Benefits

Using the 4390126 Exhaust Outlet Connection offers several benefits. It contributes to improved engine performance by ensuring efficient exhaust gas flow, which can lead to better fuel efficiency and reduced emissions. The durable construction of this part enhances the longevity of the exhaust system, potentially leading to cost savings over time by reducing the need for frequent replacements. Additionally, its reliable design helps in maintaining the overall efficiency and performance of the truck.

Installation Process

Installing the 4390126 Exhaust Outlet Connection requires careful attention to ensure a secure fit. The process involves several steps: first, ensuring that the exhaust system is clean and free of debris; second, aligning the connection with the exhaust manifold and other components; third, using the appropriate tools to tighten the connection securely without over-torquing; and finally, inspecting the installation for any leaks or loose fittings. Proper installation is key to ensuring the connection functions effectively and durably.

Troubleshooting Common Issues

Common issues that may arise with the 4390126 Exhaust Outlet Connection include leaks or corrosion. To address these problems, it is important to conduct regular inspections for signs of wear or damage. If a leak is detected, the connection should be re-tightened or replaced if necessary. Corrosion can be mitigated by ensuring that the connection is made from materials resistant to the elements and by applying protective coatings where appropriate. Regular maintenance and prompt attention to any issues can help in prolonging the lifespan of the connection.

Maintenance Tips

To prolong the lifespan of the 4390126 Exhaust Outlet Connection, regular maintenance practices are recommended. This includes periodic inspections for signs of wear, corrosion, or leaks. Cleaning the connection and surrounding areas can prevent the buildup of debris that may lead to performance issues. Additionally, ensuring that all connections are tight and secure during routine maintenance checks can help in maintaining the efficiency and reliability of the exhaust system.

Compatibility with Cummins Engines

The Exhaust Outlet Connection part 4390126, manufactured by Cummins, is designed to fit seamlessly with several of their engine models. This part is crucial for ensuring the proper flow of exhaust gases from the engine to the exhaust system, maintaining optimal performance and efficiency.

QST30 Engines

The QST30 engines benefit from the Exhaust Outlet Connection part 4390126, which is engineered to fit these models perfectly. This part ensures that the exhaust gases are directed efficiently, reducing back pressure and enhancing the overall performance of the engine.

CM2350 Engines

Similarly, the CM2350 engines are compatible with the Exhaust Outlet Connection part 4390126. This part is designed to integrate smoothly with the CM2350’s exhaust system, ensuring that the engine operates at peak efficiency. The precise fitment of this part helps in maintaining the integrity of the exhaust system and prevents any potential leaks.

T101 Engines

The T101 engines also utilize the Exhaust Outlet Connection part 4390126. This part is specifically designed to fit the T101’s exhaust configuration, ensuring that the exhaust gases are expelled effectively. The compatibility of this part with the T101 engine ensures that the engine runs smoothly and efficiently, with minimal maintenance issues.

Conclusion

By using the Exhaust Outlet Connection part 4390126, owners of QST30, CM2350, and T101 engines can ensure that their engines are operating at their best, with efficient exhaust flow and reduced wear and tear on the exhaust system. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part.


  1. Wright, G. (2015). Fundamentals of Medium-Heavy Duty Diesel Engines. Jones & Bartlett Learning.

  2. Sheng, G. (2012). Vehicle Noise, Vibration and Sound Quality. SAE International.

  3. Limpert, R. (2011). Brake Design and Safety, Third Edition. SAE International.

SPECIFICATIONS

Package Dimensions
21.38 x 11.75 x 13.25 in
Weight
35 lbs
* 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.