3966151
Water Transfer Tube
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$469.95 $559.24

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 to Water Transfer Tubes

Water transfer tubes are critical components in commercial truck engines, facilitating the movement of coolant between the engine block and the radiator. These tubes are essential for maintaining optimal engine temperature, ensuring efficient operation, and preventing overheating. Without them, the engine would be at risk of severe damage due to excessive heat 1.

Role and Functionality of the Cummins Water Transfer Tube

The Cummins Water Transfer Tube, specifically part number 3966151, is engineered to serve as a conduit for coolant, transferring it from the engine block to the radiator. This process is vital for dissipating the heat generated by the engine, thereby maintaining the engine within its operational temperature range. The tube’s design ensures a steady flow of coolant, which is essential for engine longevity and performance. By efficiently managing the coolant flow, the tube helps in maintaining the engine’s temperature, ensuring it operates within safe limits 2.

Importance in Truck Operations

In commercial trucks, maintaining the engine’s temperature is critical for performance and efficiency. The Water Transfer Tube ensures that the engine does not overheat, which can lead to severe damage. By efficiently transferring coolant, the tube helps in maintaining consistent engine performance, reducing the risk of breakdowns, and extending the engine’s lifespan. This reliability is particularly important in heavy-duty applications where engine performance directly impacts operational efficiency and safety 3.

Troubleshooting and Maintenance

Regular maintenance of the Water Transfer Tube is essential to prevent failures that could lead to engine overheating. Here are some troubleshooting tips and maintenance practices:

  1. Visual Inspection: Regularly inspect the tube for signs of wear, cracks, or leaks. Any visible damage should be addressed immediately to prevent coolant loss and potential engine damage.

  2. Pressure Testing: Conduct pressure tests to ensure the tube can withstand the operating pressures of the cooling system. Any tube that fails the pressure test should be replaced.

  3. Coolant Levels: Monitor coolant levels and quality regularly. Low coolant levels or contaminated coolant can lead to tube corrosion and failure.

  4. Replacing the Tube: If the Water Transfer Tube shows signs of wear or failure, it should be replaced promptly. Using genuine Cummins parts ensures compatibility and reliability.

Cummins: A Leader in Engine Technology

Cummins is a renowned manufacturer of engines and related components, known for its high-quality and reliable products. The company’s commitment to innovation and quality has made it a trusted name in the automotive and heavy-duty truck industries. Cummins’ Water Transfer Tubes are engineered to meet the demanding requirements of commercial truck engines, providing durability and performance. Their reputation for quality ensures that mechanics and engineers can rely on these components for consistent performance and longevity.

Water Transfer Tube (Part 3966151) Compatibility with Cummins Engines

The Water Transfer Tube (Part 3966151) is a critical component in the cooling systems of several Cummins engines. This part ensures the efficient transfer of coolant between different parts of the engine, maintaining optimal operating temperatures and preventing overheating.

ISC CM850 and ISL9 CM2150 SN

The Water Transfer Tube is compatible with the ISC CM850 and ISL9 CM2150 SN engines. These engines are known for their robust performance and reliability in heavy-duty applications. The part 3966151 fits seamlessly into the cooling system architecture of these engines, providing a reliable pathway for coolant flow.

L GAS PLUS CM556

Similarly, the L GAS PLUS CM556 engine also utilizes the Water Transfer Tube (Part 3966151). This engine is designed for applications requiring efficient fuel usage and lower emissions. The part ensures that the coolant is effectively circulated, maintaining the engine’s efficiency and longevity.

Installation and Functionality

When installing the Water Transfer Tube in these engines, it is crucial to follow the manufacturer’s guidelines to ensure proper fitment and function. The tube is typically connected to the engine block and the radiator, forming a critical link in the coolant circulation loop. Proper installation ensures that the engine operates within its optimal temperature range, enhancing performance and reliability.

Role of Part 3966151 Water Transfer Tube in Engine Systems

The Water Transfer Tube, identified by part number 3966151, is integral to the efficient operation of various engine components, particularly in systems involving turbochargers. This component facilitates the movement of water within the engine system, ensuring optimal performance and longevity of associated parts.

Integration with Turbocharger Plumbing

In turbocharger systems, the Water Transfer Tube is a key element in the plumbing setup. It is responsible for directing water to critical areas that require cooling, such as the turbocharger itself. The tube ensures a consistent flow of water, which helps in maintaining the turbocharger’s temperature within safe operating limits. This is particularly important in high-performance engines where turbochargers operate under extreme conditions.

Enhancing Turbocharger Performance

The Water Transfer Tube plays a significant role in enhancing the performance of the turbocharger. By providing a reliable water supply, it aids in the prevention of overheating, which can lead to reduced efficiency and potential damage. The consistent water flow helps in dissipating heat effectively, allowing the turbocharger to operate at peak performance levels for extended periods.

Supporting Overall Engine Efficiency

Beyond its direct interaction with the turbocharger, the Water Transfer Tube contributes to the overall efficiency of the engine. Proper water management within the engine system ensures that all components operate within their optimal temperature ranges. This not only enhances performance but also contributes to the durability and reliability of the engine.

Conclusion

Understanding the function and maintenance of the Cummins Water Transfer Tube, part number 3966151, is crucial for ensuring the efficient operation of commercial truck engines. Regular inspection and maintenance of this component can prevent costly engine damage and ensure the longevity of the engine. Cummins’ reputation for quality and reliability makes its parts a dependable choice for truck operators and mechanics, ensuring that commercial trucks remain operational and efficient.


  1. Naunheimer, H., Bertsche, B., Ryborz, J., & Novak, W. (2011). Automotive Transmissions: Fundamentals, Selection, Design and Application. Springer Vieweg.

  2. Thompson, R. (2019). Automotive Maintenance: Light Repair. Cengage Learning.

  3. Hu, H., Smaling, R., & Baseley, S. (2014). Heavy-Duty Wheeled Vehicles. SAE International.

SPECIFICATIONS

Package Dimensions
12.0 x 4.5 x 4.0 in
Weight
4 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.