3279403
Alternator Brace
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$63.95 $76.10

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 3279403 Alternator Brace is a component designed by Cummins to enhance the performance and reliability of heavy-duty trucks. This brace plays a role in supporting the alternator, ensuring its stability and efficiency within the truck’s electrical system. Cummins, a well-established manufacturer in the automotive industry, is known for its commitment to quality and innovation in producing truck components 3.

Basic Concepts of Alternator Braces

An alternator brace is a structural component that provides additional support to the alternator. It helps maintain the alternator’s position and reduces vibrations, which can affect its performance. By stabilizing the alternator, the brace contributes to the overall efficiency of the truck’s electrical system and ensures consistent power output 2. The alternator brace interacts with other components by securing the alternator in place, allowing it to function optimally without undue stress or movement.

Purpose of the 3279403 Alternator Brace

The 3279403 Alternator Brace is specifically designed to enhance the stability and efficiency of the alternator in heavy-duty trucks. By providing a solid mounting point, it reduces the alternator’s movement during operation, which can lead to improved performance and longevity. The brace plays a role in minimizing wear and tear on the alternator and its connections, contributing to a more reliable electrical system 1.

Key Features

The 3279403 Alternator Brace boasts several key features that enhance its performance. It is constructed from durable materials, ensuring it can withstand the rigors of heavy-duty truck operation. The design includes precise mounting points that align with the alternator and engine components, facilitating easy installation and secure fitting. Additionally, the brace may incorporate unique attributes such as vibration damping elements, which further contribute to its effectiveness in stabilizing the alternator.

Benefits of Using the 3279403 Alternator Brace

Utilizing the 3279403 Alternator Brace offers several advantages. It contributes to improved alternator longevity by reducing vibrations and stress on the component. This stability can lead to enhanced reliability of the truck’s electrical system, ensuring consistent power output under various operating conditions. Additionally, by maintaining optimal alternator performance, the brace may contribute to potential increases in fuel efficiency, as a well-functioning electrical system supports the engine’s overall efficiency 3.

Installation Process

Installing the 3279403 Alternator Brace involves several steps to ensure proper fitting. Begin by locating the designated mounting points on the engine and alternator. Use the appropriate tools to secure the brace in place, ensuring it is aligned correctly with the alternator. Tighten the mounting bolts to the specified torque settings to achieve a secure fit without over-tightening, which could damage the components. Following these steps ensures the brace is installed correctly, providing the intended support and stability to the alternator.

Troubleshooting Common Issues

Common issues associated with alternator braces may include loose mounting, vibrations, or damage to the brace itself. These problems can often be traced to incorrect installation, wear and tear, or external factors such as road conditions. To address these issues, inspect the mounting points for tightness and alignment, ensuring the brace is securely fitted. If vibrations persist, check for additional sources of instability within the electrical system. Regular maintenance and inspection can help identify and resolve these issues promptly 2.

Maintenance Tips

Regular maintenance of the 3279403 Alternator Brace is important to ensure its continued effectiveness. Inspect the brace and its mounting points during routine engine checks, looking for signs of wear, damage, or looseness. Clean the brace and surrounding components to remove any dirt or debris that could affect performance. If significant wear or damage is observed, consider replacing the brace to maintain optimal alternator stability and electrical system reliability.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer with a rich history in the automotive industry. The company is recognized for its commitment to quality and innovation in producing truck components. Cummins’ reputation is built on a foundation of reliable, high-performance parts that meet the demanding requirements of heavy-duty applications. The company’s dedication to advancing technology and improving product design ensures that its components, like the 3279403 Alternator Brace, deliver exceptional performance and durability 3.

Cummins Alternator Brace 3279403 Compatibility

The Cummins Alternator Brace part number 3279403 is designed to be compatible with a range of Cummins engines, ensuring a secure fit and proper function across various models. This part is integral in maintaining the alternator’s position and stability, which is crucial for the engine’s electrical system.

Compatibility with Specific Engines

  • 4B3.9 and 6B5.9 Engines: The 3279403 Alternator Brace is engineered to fit seamlessly with the 4B3.9 and 6B5.9 engines. These engines, known for their robust performance, benefit from the precise engineering of this part, ensuring that the alternator remains securely in place under all operating conditions.

  • ISC CM554 and ISL CM554 Engines: Similarly, the 3279403 Alternator Brace is also compatible with the ISC CM554 and ISL CM554 engines. These engines, which are part of the Cummins CM series, are designed for heavy-duty applications and require a reliable mounting system for the alternator. The 3279403 part number ensures that the alternator is properly aligned and secured, contributing to the overall efficiency and longevity of the engine.

Grouping for Ease of Understanding

For ease of understanding, the compatibility of the 3279403 Alternator Brace can be grouped as follows:

  • 4B3.9 and 6B5.9 Engines: These engines share a common platform and design, making the 3279403 part number suitable for both.
  • ISC CM554 and ISL CM554 Engines: These engines, while part of the same series, are designed for different applications but share a similar mounting system for the alternator, ensuring the 3279403 part number fits both models effectively.

This compatibility ensures that users of these engines can confidently use the 3279403 Alternator Brace, knowing it is designed to meet the specific needs of their engine models.

Role of Part 3279403 Alternator Brace in Engine Systems

The 3279403 Alternator Brace is an essential component in the integration and stabilization of the alternator within various engine systems. Its primary function is to provide a secure mounting point for the alternator, ensuring it remains firmly in place during engine operation. This is particularly important given the vibrations and forces generated by the engine, which can otherwise lead to alternator misalignment or damage.

Integration with Alternator Location

The alternator brace plays a significant role in defining the alternator’s location within the engine bay. By offering a stable mounting platform, it ensures that the alternator is positioned correctly relative to other components, such as the engine block and the serpentine belt. This precise positioning is vital for the efficient operation of the alternator, as it must be correctly aligned with the pulley system to drive the alternator effectively.

Interaction with Compressor and Air Systems

In engine systems that incorporate a compressor for air conditioning or turbocharging, the alternator brace helps maintain the structural integrity of the engine bay. It supports the alternator in a way that allows for the optimal routing of air and refrigerant lines. This is particularly important in high-performance engines where space is at a premium, and the efficient management of air flow is essential for both cooling and performance.

Mounting Stability

The mounting stability provided by the alternator brace is not just about keeping the alternator in place. It also contributes to the overall vibrational stability of the engine. By reducing the movement of the alternator, the brace helps minimize wear on the serpentine belt and other connected components. This, in turn, leads to a more reliable and longer-lasting engine system.

Support for Alternator Functionality

Finally, the alternator brace supports the alternator’s core function of generating electrical power for the vehicle. By ensuring that the alternator is securely mounted and correctly aligned, the brace helps maintain consistent electrical output. This is essential for powering the vehicle’s electrical systems, including lighting, ignition, and various electronic control units, under all operating conditions.

Conclusion

The 3279403 Alternator Brace is a critical component for enhancing the stability and efficiency of the alternator in heavy-duty trucks. By providing a secure mounting point, it reduces vibrations and stress on the alternator, contributing to improved performance and longevity. Regular maintenance and proper installation are essential to ensure the continued effectiveness of this Cummins part. Its compatibility with various Cummins engines makes it a versatile and reliable choice for maintaining the integrity of the truck’s electrical system.


  1. Maclaurin, Bruce. High Speed Off-Road Vehicles. Wiley, 2018.

  2. Dixon, John. Modern Diesel Technology Preventive Maintenance and Inspection. Delmar Cengage Learning, 2010.

  3. Hilgers, Michael. The Diesel Engine Second Edition. Springer Nature, 2023.

SPECIFICATIONS

Hazard Description
Non-Hazardous (NOI, ICE/Auto)
Package Dimensions
5.5 x 1.0 x 0.25 in
Weight
0.5 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.