5266523
Water Bypass Tube
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$194.95 $231.99

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 5266523 Water Bypass Tube is a component designed for use in the engine cooling systems of heavy-duty trucks. Its purpose is to regulate the flow of coolant within the system, ensuring that the engine operates at an optimal temperature. This regulation is vital for maintaining engine efficiency and longevity 1.

Basic Concepts of Water Bypass Tubes

A Water Bypass Tube is a component that facilitates the movement of coolant within the engine cooling system. It operates on the principle of diverting coolant flow to maintain a consistent temperature within the engine. This is achieved by allowing coolant to bypass certain areas of the engine when temperatures are within acceptable limits, thus preventing overheating and ensuring efficient operation 2.

Purpose of the Cummins 5266523 Water Bypass Tube

This Cummins part plays a role in the operation of a truck by managing the flow of coolant. It ensures that coolant is directed appropriately within the engine, helping to maintain optimal engine temperature. This function is important for preventing overheating, which can lead to engine damage, and for ensuring that the engine operates efficiently under various conditions 3.

Key Features

The 5266523 is characterized by its robust design and the materials used in its construction. It is made from durable materials that can withstand the high temperatures and pressures within the engine cooling system. Its design ensures efficient coolant flow and includes features that enhance its performance and durability.

Benefits

Using this part is associated with several benefits. These include improved engine efficiency, as the tube helps maintain optimal engine temperature. It also reduces the risk of overheating, which can lead to engine damage. Additionally, by ensuring efficient coolant flow, the tube contributes to the enhanced longevity of engine components.

Installation Process

Installing the 5266523 requires following a series of steps to ensure correct fitting and function. Preparatory steps include ensuring the engine is cool and the cooling system is drained. The necessary tools for installation should be gathered beforehand. The installation process involves fitting the tube into place, securing it with the appropriate fasteners, and ensuring all connections are tight. It is important to follow best practices to ensure the tube functions correctly within the engine cooling system.

Troubleshooting Common Issues

Common problems that may arise with the 5266523 include leaks or blockages. These issues can be identified through regular inspection and monitoring of the engine’s temperature and coolant levels. Troubleshooting methods may involve checking for loose connections, inspecting the tube for damage, and ensuring that the coolant flow is not obstructed. Addressing these issues promptly can help maintain the efficiency of the engine cooling system.

Maintenance Tips

Regular maintenance practices are important to ensure the 5266523 continues to function effectively. This includes inspecting the tube for signs of wear or damage at regular intervals, cleaning it as necessary to remove any buildup that could obstruct coolant flow, and considering replacement if significant wear is observed. Adhering to these maintenance tips can help ensure the longevity and efficiency of the engine cooling system.

About Cummins

Cummins Inc. is a well-established company in the automotive and heavy-duty truck industry, known for its wide range of products and its reputation for quality and reliability. With a history of innovation and commitment to excellence, Cummins continues to be a leader in providing solutions for engine and power generation systems.

Water Bypass Tube (Part 5266523) Compatibility with Cummins Engines

The Water Bypass Tube, identified by the part number 5266523, is a component in the cooling system of certain Cummins engines. This part is designed to manage the flow of coolant, ensuring efficient thermal regulation and preventing overheating.

QSB5.9 CM850

The QSB5.9 CM850 engine is one of the models that benefit from the Water Bypass Tube. This engine is known for its robust performance and reliability, often used in heavy-duty applications. The Water Bypass Tube in this engine helps maintain optimal coolant flow, enhancing the engine’s longevity and efficiency.

Group Compatibility

The Water Bypass Tube (5266523) is compatible with a range of Cummins engines, particularly those in the QSB series. This part is engineered to fit seamlessly into the cooling systems of these engines, ensuring that coolant bypasses certain areas as needed to maintain the correct temperature.

By integrating this component into the engine’s design, Cummins ensures that the cooling system operates efficiently, providing reliable performance across various applications.

Role of Part 5266523 Water Bypass Tube in Engine Systems

The 5266523 Water Bypass Tube is a component in the efficient operation of engine systems, particularly when integrated with a cooler and marine gear oil. This tube facilitates the controlled flow of water, ensuring that the cooler maintains optimal temperature regulation for the engine. By bypassing a portion of the water flow, it prevents overheating, which can lead to engine damage.

In systems utilizing marine gear oil, the Water Bypass Tube plays a significant role in maintaining the oil’s viscosity and performance. Proper temperature management is vital for the longevity and efficiency of the gear oil, as extreme temperatures can degrade its lubricating properties. The tube ensures that the oil remains within its optimal operating temperature, thereby enhancing the overall performance and reliability of the engine system.

Conclusion

The Cummins 5266523 Water Bypass Tube is a vital component in the engine cooling systems of heavy-duty trucks. It ensures efficient coolant flow, maintains optimal engine temperature, and contributes to the longevity and efficiency of engine components. Regular maintenance and prompt troubleshooting of common issues are essential to ensure the continued effectiveness of this part.


  1. Pulkrabek, W. W. (2014). Engineering Fundamentals of the Internal Combustion Engine. Pearson Education.

  2. Hilgers, M., & Achenbach, W. (2021). Vocational Vehicles and Applications. Springer Vieweg.

  3. Brach, R. M. (2023). SAE International’s Dictionary of Vehicle Accident Reconstruction and Automotive Safety. SAE International.

SPECIFICATIONS

Package Dimensions
14.1 x 1.8 x 1.75 in
Weight
1.35 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.