3689677
Flexible Hose
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$549.95 $654.44

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 3689677 Flexible Hose is a component designed for use in commercial trucks. It serves a specific function within the truck’s system, contributing to the efficient operation of various subsystems. Understanding its role and significance can help in maintaining the overall performance and reliability of the vehicle.

Basic Concepts of Flexible Hoses

Flexible hoses are components used in automotive and other systems to transfer fluids or gases between different parts of the system. They are designed to accommodate movement and vibration, which rigid pipes cannot, making them suitable for dynamic environments like those found in vehicles. Flexible hoses are typically made from materials that can withstand the pressure and temperature of the fluids or gases they carry, ensuring reliable performance over time 1.

Purpose of the 3689677 Flexible Hose in Truck Operation

The Cummins 3689677 Flexible Hose plays a role in the operation of a commercial truck by connecting specific systems and facilitating the transfer of fluids or gases. It is engineered to handle the demands of the truck’s environment, ensuring that the connected systems operate efficiently. The hose’s flexibility allows it to accommodate the movement and vibrations inherent in truck operation, which is vital for maintaining system integrity and performance 2.

Key Features

The Cummins 3689677 Flexible Hose is characterized by several key features that enhance its performance and longevity. These include its material composition, which is selected for durability and resistance to the specific fluids or gases it transfers. The hose’s flexibility is designed to accommodate the dynamic movements of the truck, while its construction ensures durability under pressure and temperature variations. Design specifications are tailored to meet the demands of commercial truck applications, ensuring reliable operation 3.

Benefits of Using the 3689677 Flexible Hose

Incorporating the Cummins 3689677 Flexible Hose into a truck’s system offers several advantages. It contributes to improved system reliability by reducing the risk of leaks and failures associated with rigid connections. Its flexibility in routing allows for more efficient system designs, potentially leading to cost savings in both initial installation and maintenance. Additionally, the hose’s durability and resistance to wear and tear can extend the intervals between maintenance checks, further contributing to cost efficiency 4.

Installation Considerations

When installing the Cummins 3689677 Flexible Hose, it is important to follow guidelines and best practices to ensure proper fitting and secure connections. This includes verifying compatibility with existing systems to prevent issues such as leaks or improper function. Securement methods should be employed to maintain the hose’s position and integrity under operating conditions, ensuring long-term reliability 5.

Troubleshooting Common Issues

Common problems associated with flexible hoses, such as leaks, kinks, or degradation, can often be addressed through systematic troubleshooting. Identifying the source of a leak may involve inspecting connections and the hose itself for signs of wear or damage. Kinks can be resolved by repositioning the hose to ensure a smooth flow path. Degradation may require assessing environmental factors or the hose’s condition to determine if replacement is necessary 6.

Maintenance Tips

Regular maintenance practices can prolong the life of the Cummins 3689677 Flexible Hose. This includes periodic inspections for signs of wear, damage, or leaks, and cleaning as necessary to remove contaminants that could affect performance. Knowing when to consider replacement is crucial for maintaining system reliability, with factors such as age, exposure to harsh conditions, and signs of degradation guiding the decision 7.

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. Its product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of commercial applications.

Flexible Hose 3689677 Compatibility with Cummins Engines

The Cummins Flexible Hose part number 3689677 is designed to fit seamlessly with a range of Cummins engines, ensuring optimal performance and durability. This hose is engineered to withstand the rigors of heavy-duty operations, providing a reliable connection between various engine components.

QSX15 CM2250 and QSX15 CM2350

The Flexible Hose 3689677 is specifically engineered to integrate with the QSX15 CM2250 and QSX15 CM2350 engines. These engines are known for their robust performance and efficiency, and the hose ensures that the fluid transfer between the engine’s critical components remains uninterrupted. The design of the hose accommodates the unique layout and requirements of these engines, ensuring a perfect fit and reliable operation.

QSX15 CM2350 X105

For the QSX15 CM2350 X105 engine, the Flexible Hose 3689677 is tailored to meet the specific demands of this variant. The X105 model, which is a part of the QSX15 series, benefits from the hose’s flexibility and durability. This ensures that the engine can operate smoothly under various conditions, maintaining the integrity of the fluid pathways.

Installation and Maintenance

When installing the Flexible Hose 3689677 on any of these engines, it is crucial to follow the manufacturer’s guidelines to ensure a secure and leak-free connection. Regular inspection and maintenance of the hose are recommended to prevent any potential failures and to maintain the engine’s overall performance.

Role of Part 3689677 Flexible Hose in Plumbing and Turbocharger Systems

Plumbing Systems

In plumbing systems, the 3689677 Flexible Hose is utilized to connect various components, ensuring a secure and leak-free connection. This hose is often employed to link pipes, valves, and fittings, accommodating the necessary flexibility to handle vibrations and movements within the system. Its application is particularly beneficial in areas where rigid piping may not suffice due to the dynamic nature of the environment. The hose allows for easier installation and maintenance, reducing the risk of joint failures and enhancing the overall reliability of the plumbing network.

Turbocharger Systems

Within turbocharger systems, the 3689677 Flexible Hose plays a significant role in connecting the turbocharger to the engine’s intake and exhaust manifolds. This connection is essential for the efficient transfer of high-pressure air and exhaust gases. The flexibility of the hose is vital in managing the thermal expansion and contraction that occur due to the extreme temperatures and pressures in turbocharger applications. By providing a durable and flexible link, the hose ensures that the turbocharger operates smoothly, contributing to improved engine performance and longevity. Additionally, the hose’s design helps in reducing stress on the turbocharger and connected components, thereby enhancing the system’s stability and efficiency.

Conclusion

The Cummins 3689677 Flexible Hose is a critical component in the operation of commercial trucks, offering flexibility, durability, and reliability in fluid and gas transfer systems. Its compatibility with various Cummins engines, including the QSX15 CM2250, QSX15 CM2350, and QSX15 CM2350 X105, ensures optimal performance and longevity. Proper installation, regular maintenance, and timely troubleshooting are essential for maximizing the benefits of this part, contributing to the overall efficiency and reliability of the truck’s systems.


  1. Reif, K. (2014). Diesel Engine Management Systems and Components. Springer.

  2. Mananathan, R. (2022). Automobile Wheel Alignment and Wheel Balancing. SAE International.

  3. Van Gelder, K. T. (2018). Fundamentals of Automotive Technology Principles and Practice. Jones Bartlett Learning.

  4. Cummins Inc. (n.d.). ISX15 CM2350 X101, Service Manual (4310641).

  5. Cummins Inc. (n.d.). ISX15 CM2350 X101, Service Manual (4310641).

  6. Cummins Inc. (n.d.). ISX15 CM2350 X101, Service Manual (4310641).

  7. Cummins Inc. (n.d.). ISX15 CM2350 X101, Service Manual (4310641).

SPECIFICATIONS

Package Dimensions
24.75 x 3.0 x 3.5 in
Weight
0.45 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.