3640394
Exhaust Manifold
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$4,199.95 $4,997.94

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

The Cummins 3640394 Exhaust Manifold is a component designed for use in commercial trucks. Its purpose is to manage the flow of exhaust gases from the engine’s cylinders to the exhaust system. This part plays a role in the efficient operation of the truck by ensuring that exhaust gases are directed away from the engine, contributing to overall engine performance and emissions management 2.

Basic Concepts of Exhaust Manifolds

An exhaust manifold is a part of the engine system that collects exhaust gases from the engine’s cylinders and channels them into the exhaust pipe. It is crucial for managing the flow of these gases, which helps in maintaining engine efficiency and reducing emissions. The manifold is typically made from heat-resistant materials to withstand the high temperatures of exhaust gases 1.

Purpose of the Cummins 3640394 Exhaust Manifold

The Cummins 3640394 Exhaust Manifold is specifically designed to facilitate the removal of exhaust gases from the engine of a truck. By efficiently directing these gases away from the engine, it helps in reducing backpressure, which can improve engine performance. This part is engineered to work seamlessly with Cummins engines, ensuring that exhaust gases are managed effectively 2.

Key Features

The Cummins 3640394 Exhaust Manifold is characterized by its robust design and the use of high-quality materials. It is constructed to endure the demanding conditions of commercial truck operations. Features such as precise engineering and durable materials contribute to its performance and longevity. Additionally, its design may include provisions for easier installation and maintenance 2.

Benefits

The use of the Cummins 3640394 Exhaust Manifold offers several advantages. It contributes to improved engine efficiency by ensuring that exhaust gases are expelled effectively. This can lead to better overall performance of the truck. Additionally, by managing exhaust gases more efficiently, it may help in reducing emissions, aligning with environmental regulations. Its durable construction also ensures long-term reliability 2.

Installation and Compatibility

Proper installation of the Cummins 3640394 Exhaust Manifold is important for ensuring its effective operation. It is designed to be compatible with specific Cummins engine models, ensuring a precise fit and function. Following manufacturer guidelines during installation can help in achieving optimal performance and durability 2.

Maintenance and Troubleshooting

Regular maintenance of the Cummins 3640394 Exhaust Manifold is important for its longevity and performance. This includes periodic inspections for signs of wear or damage. Common issues may include cracks or leaks, which can affect its efficiency. Addressing these issues promptly can help in maintaining the manifold’s performance and preventing more significant problems 2.

Performance Enhancements

The Cummins 3640394 Exhaust Manifold contributes to the overall performance of the engine by efficiently managing exhaust gases. This can lead to improvements in power output and fuel efficiency. Its design and construction are aimed at enhancing the engine’s operation, providing benefits that are noticeable in the truck’s performance 2.

Environmental Impact

The efficient management of exhaust gases by the Cummins 3640394 Exhaust Manifold can have positive environmental impacts. By reducing emissions, it helps in complying with environmental regulations. This part plays a role in the truck’s overall emissions profile, contributing to a reduction in the environmental footprint of commercial truck operations 2.

Cummins Company Overview

Cummins Inc. is a well-established company in the commercial truck industry, known for its wide range of engine and power generation products. With a history of innovation and quality, Cummins has built a reputation for reliability and performance. The company’s product offerings include a variety of parts and systems designed to enhance the efficiency and durability of commercial vehicles 2.

Exhaust Manifold Compatibility with Cummins Engines

The Exhaust Manifold part number 3640394, manufactured by Cummins, is designed to fit a variety of engines. Below is a detailed description of its compatibility with the listed engines:

GTA38 G CMEICS G116C

The Exhaust Manifold 3640394 is compatible with the GTA38 G CMEICS G116C engine. This part ensures efficient exhaust gas flow, contributing to optimal engine performance and reduced emissions 2.

K38, K50, KTA38GC

For the K38, K50, and KTA38GC engines, the Exhaust Manifold 3640394 is engineered to provide a seamless fit. This compatibility ensures that the manifold effectively channels exhaust gases away from the engine, enhancing overall efficiency and reliability 2.

CM558

The Exhaust Manifold 3640394 also fits the CM558 engine. This part is crucial for maintaining the integrity of the exhaust system, ensuring that the engine operates at peak performance levels 2.

Each of these engines benefits from the precise engineering of the Exhaust Manifold 3640394, ensuring that exhaust gases are managed effectively and efficiently 2.

Role of Part 3640394 Exhaust Manifold in Engine Systems

The part 3640394 Exhaust Manifold is a key component in the efficient operation of various engine systems. It is responsible for collecting exhaust gases from the engine’s cylinders and directing them towards the exhaust system.

In an arrangement involving a turbocharger, the Exhaust Manifold plays a significant role. The turbocharger relies on the flow of exhaust gases to spin the turbine, which in turn drives the compressor to intake more air into the engine. The Exhaust Manifold ensures a smooth and consistent flow of these gases, optimizing the performance of the turbocharger.

When integrated into an exhaust assembly, the Exhaust Manifold works in conjunction with other components such as the catalytic converter and muffler. It channels the exhaust gases from the engine to these components, ensuring that the gases are processed and expelled efficiently.

In an exhaust manifold assembly, the part 3640394 Exhaust Manifold is often paired with heat shields and insulation materials. These additions help in managing the high temperatures generated by the exhaust gases, protecting nearby engine components from heat damage.

The manifold itself is a complex network of passages that merge the exhaust streams from individual cylinders. This merging process is essential for maintaining balanced exhaust flow, which contributes to the overall performance and longevity of the engine.

Finally, within the broader exhaust system, the Exhaust Manifold serves as the initial point of collection for exhaust gases. Its design and material are engineered to withstand high temperatures and pressures, ensuring reliable operation over the engine’s lifespan 2.

Conclusion

The Cummins 3640394 Exhaust Manifold is a vital component in the operation of commercial truck engines. Its role in managing exhaust gases contributes to improved engine efficiency, performance, and environmental compliance. The robust design and compatibility with various Cummins engines make it a reliable choice for maintaining and enhancing the performance of commercial vehicles.


  1. Goodnight, N., & Van Gelder, K. (2018). Automotive Braking Systems. Jones & Bartlett Learning.

  2. Lakshminarayanan, P. A., & Nayak, N. S. (2011). Critical Component Wear in Heavy Duty Engines. John Wiley & Sons.

SPECIFICATIONS

Package Dimensions
30.88 x 10.88 x 9.0 in
Weight
62 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.