3684267
Male Union
Cummins®

AVAILABLE

Cummins®

7 are currently available

Ships within 2-4 business days

$20.95 $24.93

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 3684267 Male Union is a component designed for use in commercial truck systems. It facilitates efficient fluid transfer by securely connecting different parts of the fluid system. Its role is significant in maintaining the overall performance and reliability of the truck’s fluid dynamics.

Basic Concepts of Male Unions

A male union is a type of fitting used in fluid systems to join two pipes or components. It consists of a male threaded end that screws into a corresponding female fitting. This design allows for easy assembly and disassembly, making it ideal for systems that require regular maintenance or modifications. The male union operates by creating a sealed connection that prevents leaks and ensures consistent fluid flow 1.

Purpose of the Cummins 3684267 Male Union

The Cummins 3684267 Male Union serves a specific function in the operation of commercial trucks. It connects various components within the fluid system, such as hoses, pipes, and filters. By providing a secure and leak-proof connection, it helps maintain the integrity of the fluid transfer process, ensuring that fluids move efficiently throughout the system.

Key Features

This Cummins part is characterized by several key features that enhance its performance. It is typically made from durable materials such as brass or stainless steel, which offer resistance to corrosion and high pressure. The design includes threaded connections that ensure a tight seal, and it may feature additional elements like gaskets or O-rings to further prevent leaks. These characteristics contribute to its reliability and longevity in demanding commercial truck applications 2.

Benefits

The Cummins 3684267 Male Union offers several benefits that contribute to its effectiveness in commercial truck systems. It improves fluid transfer efficiency by providing a secure connection that minimizes leaks and ensures consistent flow. Its durable construction enhances its longevity, reducing the need for frequent replacements. Additionally, the design of the male union allows for easy installation and maintenance, making it a practical choice for fleet managers and technicians.

Installation Process

Installing the Cummins 3684267 Male Union requires careful attention to detail to ensure a secure and effective connection. Begin by gathering the necessary tools, such as a wrench and Teflon tape. Prepare the fitting by applying Teflon tape to the threaded end to enhance the seal. Screw the male union into the corresponding female fitting, ensuring it is tightened to the manufacturer’s specified torque. Finally, inspect the connection for any signs of leaks and make adjustments as needed.

Maintenance Tips

Regular maintenance of the Cummins 3684267 Male Union is important to ensure long-term performance and reliability. Inspect the fitting periodically for signs of wear or corrosion. Clean the threads and surrounding area to remove any debris that could affect the seal. If leaks are detected, tighten the connection or replace the gasket or O-ring as necessary. Following these maintenance practices will help prevent issues and extend the life of the male union.

Troubleshooting Common Issues

Common problems with the Cummins 3684267 Male Union may include leaks or connection failures. If a leak is detected, first ensure that the fitting is tightened to the proper torque. Check for damage to the threads or gasket and replace if necessary. Connection failures can often be resolved by cleaning the fitting and ensuring a proper seal. If issues persist, consult the manufacturer’s guidelines or seek professional assistance.

About Cummins

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. The company offers a wide range of products designed to meet the needs of various applications, from on-highway to off-highway and industrial uses. Cummins’ commitment to excellence is reflected in its extensive product line and customer-focused approach.

Cummins Male Union Part 3684267 Compatibility

This part is designed to integrate seamlessly with a variety of Cummins engine models. It is crucial for ensuring proper fluid flow and connection in the engine’s system.

ISG12 CM2880 G107 and ISX CM871

The Male Union part 3684267 is compatible with the ISG12 CM2880 G107 and ISX CM871 engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The Male Union ensures that the fluid connections are secure and leak-proof, maintaining the engine’s operational integrity.

QSK95 CM2350 K113

For the QSK95 CM2350 K113 engine, the Male Union part 3684267 is an essential component. This engine is designed for high-performance applications, and the Male Union helps maintain the fluid pathways’ efficiency and durability.

X11 CM2670 X126B, X12 CM2670 X121B, X13 CM2670 X122B, and Z14 CM2670 Z103B

The Male Union part 3684267 is also compatible with the X11 CM2670 X126B, X12 CM2670 X121B, X13 CM2670 X122B, and Z14 CM2670 Z103B engines. These engines are part of the Cummins X Series, known for their versatility and power across various applications. The Male Union ensures that the fluid connections are robust and reliable, supporting the engine’s performance and longevity.

By ensuring a secure and leak-proof connection, the Male Union part 3684267 plays a vital role in the overall functionality and reliability of these Cummins engines.

Role of Part 3684267 Male Union in Engine Systems

This part is an essential component in various engine systems, facilitating the secure connection of different parts and ensuring efficient operation.

In plumbing systems, the Male Union is utilized to join pipes and fittings, providing a reliable seal that prevents leaks. This is particularly important in high-pressure environments where even minor leaks can lead to significant issues. The secure connection ensures that fluids, whether coolants or lubricants, are transported efficiently throughout the system.

When integrated into turbocharger systems, the Male Union plays a significant role in connecting the turbocharger to the engine’s plumbing. This connection is vital for the delivery of coolant to the turbocharger, which is necessary for maintaining optimal operating temperatures. The Male Union ensures that the coolant flow is consistent and uninterrupted, which is essential for the turbocharger’s performance and longevity.

In turbocharger coolant systems, the Male Union is used to connect various components such as the heat exchanger and the turbocharger itself. This ensures that the coolant circulates effectively, dissipating heat generated by the turbocharger. The secure fitting provided by the Male Union is key to maintaining the integrity of the coolant system, preventing leaks that could compromise cooling efficiency.

Overall, the Part 3684267 Male Union is a fundamental component in ensuring the reliable and efficient operation of engine systems by providing secure and leak-proof connections between critical components.

Conclusion

The Cummins 3684267 Male Union is a critical component in commercial truck systems, ensuring efficient and reliable fluid transfer. Its durable construction, ease of installation, and maintenance make it a practical choice for fleet managers and technicians. By understanding its features, benefits, and proper installation and maintenance procedures, users can ensure the longevity and performance of their fluid systems.


  1. Brach, R. Matthew. SAE International’s Dictionary of Vehicle Accident Reconstruction and Automotive Safety. SAE International, 2023.

  2. Wang, Yushu. Introduction to Engine Valvetrains. SAE International, 2007.

SPECIFICATIONS

Package Dimensions
3.3 x 1.7 x 1.7 in
Weight
0.096 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.