5318261
Water Inlet Connection
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$66.95 $79.67

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 5318261 Water Inlet Connection is a component designed for use in the cooling systems of commercial trucks. Its purpose is to facilitate the flow of coolant into the engine, playing a role in maintaining optimal engine temperature and ensuring efficient operation 1.

Basic Concepts of Water Inlet Connections

A water inlet connection is a component that allows coolant to enter the engine’s cooling system. It is integral to the system’s function, as it ensures that coolant is distributed evenly throughout the engine to absorb heat. This process helps in maintaining the engine’s temperature within a specified range, which is vital for the engine’s longevity and performance 2. The water inlet connection is typically located at a point where it can effectively distribute coolant to the various parts of the engine that require cooling.

Purpose of the 5318261 Water Inlet Connection

This Cummins part is specifically designed to play a role in the coolant flow process within a truck’s engine. It allows coolant to enter the engine block, where it absorbs heat from the combustion process. This component ensures that the coolant is directed to the areas of the engine that require cooling, contributing to the overall efficiency and reliability of the engine’s cooling system.

Key Features

The 5318261 is constructed from materials that are resistant to corrosion and high temperatures, ensuring durability and longevity. Its design includes features that enhance the flow of coolant, such as smooth internal passages and precise fitting to the engine block. Additionally, it may incorporate gaskets or seals to prevent leaks, ensuring that the coolant system remains pressurized and efficient.

Benefits

Using this part can lead to improved engine efficiency, as it ensures that coolant is effectively distributed throughout the engine. This component contributes to the durability of the engine by helping to maintain optimal operating temperatures, which can reduce the risk of overheating and related damage. Its reliable performance in various operating conditions makes it a valuable part of the engine’s cooling system.

Installation Process

Installing the 5318261 requires careful attention to ensure a proper fit and seal. The process involves cleaning the mating surfaces on the engine block, applying any necessary sealants, and securing the connection in place with the appropriate fasteners. It is important to follow the manufacturer’s instructions to ensure that the connection is installed correctly and functions as intended.

Maintenance and Troubleshooting

Regular maintenance of the 5318261 includes checking for signs of wear or damage, such as cracks or leaks, and ensuring that all connections are secure. If leaks or blockages are detected, it may be necessary to replace gaskets or seals, or in some cases, the connection itself. Keeping the cooling system clean and free of contaminants can also help to maintain the efficiency of the water inlet connection.

Compatibility and Applications

The 5318261 is designed for use with specific types of trucks and engines. It is important to verify compatibility with the engine model to ensure proper function and integration within the cooling system.

Cummins Corporation 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 vehicle markets worldwide. The company is known for its commitment to sustainability and efficiency, providing solutions that meet the needs of a variety of industries 3.

Cummins Engine Part 5318261: Water Inlet Connection

The Cummins part 5318261, identified as a Water Inlet Connection, is a component in the cooling system of various Cummins engines. This part is designed to facilitate the flow of coolant into the engine, ensuring optimal thermal management and performance.

Compatibility with Cummins Engines

L8.9G and CMOH2.0 Engines

The Water Inlet Connection part 5318261 is compatible with the L8.9G and CMOH2.0 engines. These engines, while differing in their specific configurations and applications, share a common requirement for efficient coolant management. The part ensures that the coolant enters the engine block at the correct point, maintaining the engine’s operational temperature and preventing overheating.

L125B Engine

Similarly, the L125B engine also utilizes the part 5318261 for its water inlet connection. This engine, known for its robust performance and reliability, benefits from the precise fit and function of this component. The Water Inlet Connection ensures that the coolant is delivered to the engine in a controlled manner, contributing to the engine’s longevity and efficiency.

Importance of the Water Inlet Connection

The Water Inlet Connection is essential for the overall health and performance of the engine. By providing a secure and efficient pathway for coolant, it helps to:

  • Maintain optimal engine temperature
  • Prevent engine overheating
  • Ensure efficient heat dissipation
  • Support overall engine reliability and longevity

Each of these engines, despite their differences, relies on the Water Inlet Connection to function correctly and efficiently. The part’s design and fit are critical to ensuring that the coolant flows as intended, supporting the engine’s cooling system and overall performance.

Conclusion

The Water Inlet Connection (part 5318261) is integral to the efficient operation of various engine systems. It facilitates the introduction of coolant into the engine block, ensuring that the coolant circulates effectively through the system. When properly fitted, it allows for a seamless transition of coolant from the radiator hose to the engine block, ensuring that the coolant can reach the cylinder heads and other critical areas that require cooling. The connection also interfaces with the thermostat housing, which regulates the flow of coolant based on the engine’s temperature. This relationship ensures that the engine maintains optimal operating temperatures, preventing overheating and enhancing overall performance. Additionally, the Water Inlet Connection plays a role in the Pressure Relief System. It allows for the controlled release of excess pressure within the cooling system, which helps maintain system integrity and prevents damage to other components. In summary, the Water Inlet Connection is a key component that ensures the proper functioning of the cooling system, contributing to the longevity and efficiency of the engine.


  1. Mollenhauer, K., & Tschoeke, H. (2010). Handbook of Diesel Engines. Springer.

  2. Pacejka, H. B. (2006). Tyre and Vehicle Dynamics. Butterworth-Heinemann.

  3. Awari, G.K., Kumbhar, V.S., & Tirpude, R.B. (2011). Automotive Systems Principles and Practice. CRC Press.

* 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.