3957358
Belt Guard
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$1,299.95 $1,546.94

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 3957358 Belt Guard is a component designed to enhance the reliability and efficiency of heavy-duty truck engines. Its role is to protect the belt drive system, ensuring smooth operation and longevity of the engine components it serves.

Basic Concepts of Belt Guards

A belt guard is a protective enclosure used in machinery to shield moving belts from external elements and to prevent contact with personnel. In the context of truck engines, belt guards play a specific role in safeguarding the belt drive system, which is responsible for transferring power to various engine accessories such as the alternator, water pump, and air conditioning compressor 1.

Purpose of the Cummins 3957358 Belt Guard

The Cummins 3957358 Belt Guard is designed to protect the belt drive system in heavy-duty trucks. By enclosing the belts, it reduces the risk of damage from debris, enhances the belts’ longevity, and contributes to the overall efficiency of the engine. This protection is vital in the harsh environments often encountered by heavy-duty trucks, where dust, dirt, and other particles can significantly impact the belt’s performance and lifespan 2.

Key Features

The Cummins 3957358 Belt Guard is constructed from durable materials that offer resistance to wear and environmental factors. Its design includes features such as precise fitment to ensure compatibility with specific engine models, easy installation procedures, and a robust structure that can withstand the vibrations and stresses inherent in heavy-duty truck operations 3.

Benefits of Using the Cummins 3957358 Belt Guard

Utilizing the Cummins 3957358 Belt Guard offers several advantages. It enhances the durability of the belt drive system by shielding it from debris and environmental contaminants. This protection contributes to the overall efficiency of the engine, as a well-maintained belt drive system ensures consistent power transfer to essential engine accessories. Additionally, the guard helps in reducing maintenance costs by extending the lifespan of the belts and minimizing the risk of unexpected failures 4.

Installation Process

Installing the Cummins 3957358 Belt Guard involves several steps to ensure proper fitment and functionality. The process includes preparing the engine compartment, aligning the guard with the belt drive system, securing it in place using the provided fasteners, and verifying that it does not interfere with the operation of the belts or other engine components. Tools required may include wrenches and screwdrivers, depending on the specific model of the truck.

Maintenance and Troubleshooting

Maintaining the Cummins 3957358 Belt Guard is straightforward but important for ensuring its effectiveness. Regular inspection routines should include checking for signs of wear, ensuring that it remains securely fastened, and cleaning any accumulated debris. Troubleshooting common issues may involve addressing misalignments, repairing or replacing damaged sections of the guard, and ensuring that it continues to provide adequate protection for the belt drive system.

Safety Considerations

When installing, maintaining, or troubleshooting the Cummins 3957358 Belt Guard, it is important to follow safety practices to protect both the operator and the equipment. This includes ensuring the engine is off and cooled down before beginning work, using appropriate personal protective equipment, and following all manufacturer guidelines for installation and maintenance procedures.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the automotive and heavy-duty truck industry. The company’s product range includes engines and components designed to meet the demanding requirements of heavy-duty applications, ensuring optimal performance and durability.

Role of Part 3957358 Belt Guard in Engine Systems

The 3957358 Belt Guard is a key component in ensuring the reliable operation of engine systems by protecting the belt and, by extension, the accessories it drives. It is primarily designed to protect the belt system that drives multiple engine accessories.

When integrated with the front engine, the Belt Guard ensures that the belt remains in optimal condition by shielding it from external elements that could cause wear and tear. This protection is vital for maintaining the efficiency and longevity of the belt, which in turn ensures consistent performance of driven components such as the alternator, water pump, and power steering pump.

In an engine package, the Belt Guard plays a significant role in maintaining the structural integrity of the engine assembly. By providing a barrier against debris and contaminants, it helps in reducing the risk of belt slippage or breakage. This is particularly important in environments where the engine is exposed to dust, dirt, or other particulates.

Additionally, the Belt Guard contributes to the overall safety of the engine system. By preventing foreign objects from interfering with the belt, it reduces the likelihood of unexpected engine shutdowns or damage to other components. This is especially relevant in applications where the engine operates in harsh conditions or is subject to frequent vibrations.

Conclusion

In summary, the Cummins 3957358 Belt Guard is a critical component in the maintenance and efficiency of heavy-duty truck engines. Its design and features are tailored to provide robust protection for the belt drive system, ensuring longevity and reliability of the engine components. Regular maintenance and adherence to safety practices are essential for maximizing the benefits of this part.


  1. Sully, F. K. (1998). Motor Vehicle Mechanics Textbook, Fifth Edition. Heinemann Professional Publishing.

  2. Brach, R. Matthew. (2023). SAE International’s Dictionary of Vehicle Accident Reconstruction and Automotive Safety. SAE Books.

  3. Duffy, Owen C., & Wright, Gus. (2016). Fundamentals of Medium-Heavy Duty Commercial Vehicle Systems. Jones Bartlett Learning.

  4. Boyce, Meherwan P. (2002). Gas Turbine Engineering Handbook, Second Edition. Gulf Professional Publishing.

SPECIFICATIONS

Package Dimensions
18.3 x 17.3 x 12.88 in
Weight
9.6 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.