3970405
Plain Hose
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$16.95 $20.17

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 3970405 Plain Hose is a component designed for use in commercial trucks. It serves as a conduit for fluid transfer within the vehicle’s system, ensuring the efficient operation of various truck functions. This hose is integral to maintaining the fluid dynamics necessary for the truck’s performance and longevity.

Basic Concepts of Plain Hoses

Plain hoses are flexible tubes used in fluid transfer systems. They are designed to transport liquids or gases between different components within a system. In the context of a truck’s infrastructure, plain hoses facilitate the movement of essential fluids such as coolant, fuel, or hydraulic fluid. They are engineered to withstand the pressures and temperatures associated with these fluids, ensuring reliable operation under varying conditions 1.

Purpose of the 3970405 Plain Hose in Truck Operation

The Cummins 3970405 Plain Hose plays a specific role in the truck’s system by connecting various components and enabling the transport of specific fluids. It is designed to link parts of the system that require fluid transfer, ensuring that the truck operates smoothly. The hose is compatible with the truck’s existing infrastructure, allowing for seamless integration and function 2.

Key Features of the 3970405 Plain Hose

The Cummins 3970405 Plain Hose is constructed from materials that offer flexibility and resistance to wear and tear. Its design includes features that enhance performance and durability, such as reinforced layers to withstand high pressure and temperature fluctuations. These characteristics ensure that the hose can endure the rigors of commercial truck operation 3.

Benefits of Using the 3970405 Plain Hose

Incorporating the Cummins 3970405 Plain Hose into truck systems offers several advantages. It provides improved fluid transfer efficiency, contributing to the overall performance of the truck. The hose’s durable construction promotes longevity, reducing the frequency of replacements. Additionally, its design allows for ease of installation, minimizing downtime during maintenance procedures.

Troubleshooting and Maintenance Suggestions

To maintain optimal performance, it is important to be aware of common issues that may arise with the Cummins 3970405 Plain Hose. Regular inspections can help identify signs of wear or damage. Preventive maintenance practices, such as checking for leaks and ensuring proper connections, can extend the hose’s lifespan. When replacement or repair is necessary, following manufacturer guidelines ensures that the hose continues to function effectively.

Installation Considerations

When installing the Cummins 3970405 Plain Hose, several factors should be taken into account. Proper routing of the hose is crucial to avoid abrasion and kinking, which can impede fluid flow and cause damage. Securing the hose with appropriate methods ensures it remains in place and operates under the intended conditions. Compatibility with other system components must also be verified to ensure a cohesive and efficient system.

Environmental and Operational Factors

The performance and lifespan of the Cummins 3970405 Plain Hose can be influenced by environmental conditions and operational stresses. Exposure to extreme temperatures, chemicals, or physical abrasion can affect the hose’s integrity. Strategies for mitigating these effects include selecting hoses with suitable material properties and implementing protective measures during operation.

Cummins: A Brief 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 quality, Cummins serves commercial, industrial, and automotive markets. The company’s commitment to excellence is reflected in its diverse product range, which includes components like the Cummins 3970405 Plain Hose, designed to meet the demanding requirements of commercial truck applications.

Role of Part 3970405 Plain Hose in Engine Systems

The part 3970405 Plain Hose is an essential component in various engine systems, facilitating the smooth operation and efficiency of several key elements.

In the arrangement of engine components, the Plain Hose serves as a vital conduit for fluids and gases, ensuring that they are directed precisely where needed without leakage or loss of pressure. This is particularly important in systems where precise fluid dynamics are required for optimal performance.

When integrated with a turbocharger, the Plain Hose plays a significant role in managing the flow of exhaust gases that drive the turbine. Efficient gas flow is necessary for the turbocharger to operate effectively, thereby enhancing engine power and responsiveness.

In the manifold system, the Plain Hose is used to connect various passages that distribute air or exhaust gases to and from the engine cylinders. Its role here is to maintain consistent pressure and flow, which is essential for the balanced operation of the engine.

Lastly, in the exhaust system, the Plain Hose is employed to route exhaust gases from the engine to the tailpipe. This not only helps in reducing emissions but also ensures that the exhaust gases are expelled efficiently, contributing to the overall performance and environmental compliance of the engine.

Conclusion

The Cummins 3970405 Plain Hose is a critical component in the fluid transfer systems of commercial trucks, designed to ensure efficient operation and longevity. Its robust construction, compatibility with various engine models, and ease of installation make it a valuable asset in maintaining the performance and reliability of truck systems. Regular maintenance and proper installation practices are essential to maximize the benefits of this Cummins part.


  1. Lejda, K., & Wos, P. (2012). Internal Combustion Engines. InTech.

  2. Denton, T., & Pells, H. (2022). Automotive Technician Training Theory. Routledge.

  3. Fehan, D. R. (2013). Design of Racing and High-Performance Engines 2004-2013. SAE International.

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* 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.