4951759
Male Union
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$449.95 $535.44

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

Introduction

The Male Union Fitting 4951759 is a component manufactured by Cummins, a well-established name in the commercial vehicle industry. This fitting is integral to the fluid systems of commercial trucks, ensuring efficient operation and reliability. Cummins is renowned for its high-quality parts and comprehensive product range, making the 4951759 fitting a valuable component in maintaining the performance and longevity of truck systems 1.

Basic Concepts of Male Union Fittings

Male union fittings are components used in fluid systems to connect pipes or hoses. They consist of a male threaded end that screws into a corresponding female fitting, creating a secure and leak-proof connection. These fittings are widely used in automotive and industrial applications due to their reliability and ease of use. They allow for quick disconnection and reconnection, which is beneficial for maintenance and repair operations 2.

Purpose of the 4951759 Male Union Fitting in Truck Operations

The 4951759 Male Union Fitting plays a specific role in the fluid systems of commercial trucks. It is designed to connect various components within the system, ensuring the smooth transfer of fluids such as fuel, coolant, or hydraulic fluid. This fitting helps maintain system integrity by providing a secure connection that resists leaks and withstands the pressures and temperatures encountered in truck operations 3.

Key Features of the 4951759 Male Union Fitting

The 4951759 Male Union Fitting is engineered with several features that enhance its performance and reliability. It is constructed from high-quality materials that offer durability and resistance to corrosion. The fitting includes precision-machined threads to ensure a tight seal, and it is designed to withstand high pressures and temperatures. Additionally, the fitting is easy to install and remove, which simplifies maintenance procedures 1.

Benefits of Using the 4951759 Male Union Fitting

Using the 4951759 Male Union Fitting offers several advantages. It improves system integrity by providing a secure and leak-proof connection. The fitting’s design allows for easy installation and removal, reducing downtime during maintenance. Additionally, its durable construction ensures long-term reliability, even in demanding truck environments 2.

Installation and Usage Guidelines

Proper installation of the 4951759 Male Union Fitting is crucial for ensuring its effectiveness. Begin by ensuring that the mating surfaces are clean and free of debris. Apply a compatible thread sealant to the threads of the fitting to enhance the seal. Screw the fitting into the corresponding female fitting by hand until snug, then use a wrench to tighten it further. Avoid over-tightening to prevent damage to the threads. Follow Cummins’ recommended torque specifications for final tightening 3.

Troubleshooting Common Issues

Common issues with male union fittings can include leaks, difficulty in removal, or thread damage. To address leaks, first, ensure that the fitting is properly tightened. If leaks persist, inspect the threads for damage and replace the fitting if necessary. Difficulty in removal may be due to corrosion or over-tightening; applying a penetrating lubricant can help loosen the fitting. Thread damage can often be prevented by using the correct tools and following proper installation procedures 1.

Maintenance Tips

Regular maintenance of the 4951759 Male Union Fitting is important for ensuring its longevity and optimal performance. Inspect the fitting during routine maintenance checks for signs of wear, corrosion, or leaks. Clean the fitting and mating surfaces as needed to remove any buildup. If the fitting shows signs of damage or wear, replace it to prevent potential system failures. Following these maintenance practices will help ensure the fitting continues to perform reliably 2.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emission solutions. Founded in 1919, Cummins has built a reputation for innovation, quality, and reliability. The company serves commercial vehicle, industrial, power generation, and marine markets, providing products and services that meet the needs of customers worldwide. Cummins’ commitment to excellence is reflected in its extensive product range and ongoing investment in research and development 3.

Cummins Male Union Fitting 4951759 in Engine Applications

The Cummins Male Union Fitting part number 4951759 is a critical component in various engine systems, ensuring the integrity and functionality of the fluid pathways. This fitting is designed to connect different parts of the engine’s hydraulic or fuel systems, providing a secure and leak-proof connection.

QSK60G Engine

In the QSK60G engine, the Male Union Fitting 4951759 plays a vital role in maintaining the efficiency of the engine’s hydraulic system. This engine, known for its robust performance and reliability, relies on precise fluid management to operate smoothly. The fitting ensures that the hydraulic lines are properly connected, preventing any leaks that could compromise the engine’s performance 3.

QSK50G Engine

Similarly, in the QSK50G engine, the Male Union Fitting 4951759 is essential for the proper functioning of the engine’s hydraulic and fuel systems. This engine, part of the QSK series, is designed for heavy-duty applications, and the fitting’s role in maintaining fluid integrity is crucial for its performance 3.

QSK45 Engine

The QSK45 engine also benefits from the use of the Male Union Fitting 4951759. This engine, known for its versatility and efficiency, requires precise fluid connections to ensure optimal operation. The fitting’s design ensures that the fluid pathways remain secure, contributing to the engine’s overall reliability and performance 3.

QSK38 Engine

In the QSK38 engine, the Male Union Fitting 4951759 is a key component in the engine’s hydraulic system. This engine, designed for a range of applications, relies on the fitting to maintain the integrity of its fluid connections, ensuring smooth and efficient operation 3.

QSK23 Engine

The QSK23 engine also utilizes the Male Union Fitting 4951759 to connect various parts of its hydraulic and fuel systems. This engine, known for its durability and performance, depends on the fitting to provide secure and leak-proof connections, ensuring that it operates at peak efficiency 3.

QSK19 Engine

In the QSK19 engine, the Male Union Fitting 4951759 is essential for maintaining the integrity of the engine’s fluid pathways. This engine, designed for heavy-duty applications, relies on the fitting to ensure that its hydraulic and fuel systems are properly connected, contributing to its overall reliability and performance 3.

QSK15 Engine

The QSK15 engine also benefits from the use of the Male Union Fitting 4951759. This engine, known for its efficiency and durability, requires the fitting to ensure that its fluid connections are secure and leak-proof, contributing to its smooth and reliable operation 3.

QSK11 Engine

In the QSK11 engine, the Male Union Fitting 4951759 is a critical component in the engine’s hydraulic system. This engine, designed for a range of applications, relies on the fitting to ensure that its fluid pathways remain secure, contributing to its overall performance and reliability 3.

QSK9 Engine

The QSK9 engine also utilizes the Male Union Fitting 4951759 to connect various parts of its hydraulic and fuel systems. This engine, known for its efficiency and durability, depends on the fitting to provide secure and leak-proof connections, ensuring that it operates at peak efficiency 3.

Role of Part 4951759 Male Union Fitting in Engine Systems

The 4951759 Male Union Fitting is an integral component in various engine systems, facilitating the secure connection of different parts to ensure efficient operation.

Turbocharger Coolant Systems

In turbocharger coolant systems, the Male Union Fitting is used to connect the coolant lines to the turbocharger. This connection is essential for maintaining the optimal temperature of the turbocharger, which is vital for its performance and longevity. The fitting ensures a leak-free seal, allowing coolant to circulate effectively and dissipate heat generated by the turbocharger 1.

Plumbing Applications

Within the broader context of engine plumbing, the Male Union Fitting plays a significant role in connecting various hoses and pipes. It is commonly used in fuel, oil, and coolant lines, providing a reliable connection that can withstand the pressures and temperatures associated with these fluids. The fitting’s design allows for easy disassembly and reassembly, which is beneficial during maintenance or repairs 2.

General Engine Systems

Across different engine systems, the Male Union Fitting is employed to join components that require a secure and durable connection. Whether it’s connecting sensors to fluid lines or linking different sections of the engine’s plumbing, this fitting ensures that all parts work in unison. Its role in maintaining the integrity of these connections is fundamental to the overall efficiency and reliability of the engine 3.

Conclusion

The 4951759 Male Union Fitting by Cummins is a critical component in the fluid systems of commercial trucks and various engine applications. Its design and features ensure secure, leak-proof connections that withstand the pressures and temperatures of truck operations. Proper installation, regular maintenance, and understanding its role in different engine systems are essential for maximizing the performance and reliability of this Cummins part.


  1. Klaus Mollenhauer and Helmut Tschoeke, Handbook of Diesel Engines (Springer, 2010).

  2. Sean Bennett, Modern Diesel Technology Light Duty Diesels (Cengage Learning, 2012).

  3. Cummins Inc., Operation and Maintenance Manual for QSK19 CM2350 K114, Bulletin Number 5579622.

SPECIFICATIONS

Package Dimensions
12.0 x 7.0 x 7.5 in
Weight
0.707 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.