4988336
Muffler
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$279.95 $333.14

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 Muffler Part #4988336 is a component designed for use in commercial trucks. Its purpose is to manage the exhaust system’s noise and gases, contributing to the overall efficiency and performance of the vehicle. This part is significant in maintaining the truck’s operational standards, ensuring compliance with noise regulations, and enhancing engine performance.

Basic Concepts of Mufflers

A muffler is a device installed in the exhaust system of a vehicle to reduce the noise produced by the engine. It works by redirecting the exhaust gases through a series of chambers and baffles, which dissipate the sound energy 1. Mufflers also play a role in managing exhaust gases, ensuring they are expelled efficiently from the engine. This function is vital for maintaining engine performance and meeting environmental standards 2.

Purpose of the 4988336 Muffler

The 4988336 Muffler is designed to perform several functions within a truck’s exhaust system. It reduces engine noise, making the operation of the vehicle more pleasant for drivers and bystanders. Additionally, it manages exhaust gases, ensuring they are expelled efficiently, which can contribute to improved engine performance. The muffler also plays a role in maintaining the truck’s compliance with noise regulations 3.

Key Features

The 4988336 Muffler boasts several key features that enhance its performance and durability. Its design incorporates multiple chambers and baffles to effectively reduce noise. The materials used in its construction are selected for their durability and resistance to corrosion, ensuring long-term performance. Additionally, the muffler may include unique attributes such as a specific shape or size that optimizes its function within the exhaust system.

Benefits

The 4988336 Muffler offers several benefits to truck operators. It contributes to improved engine efficiency by ensuring exhaust gases are expelled effectively. The reduction in engine noise enhances the driving experience and complies with noise regulations. Furthermore, the durability of the muffler means it requires less frequent replacement, offering long-term value to the operator.

Installation Process

Installing the 4988336 Muffler requires careful attention to detail to ensure proper fitting and function. The process involves disconnecting the old muffler, aligning the new muffler with the exhaust system, and securing it in place with the appropriate tools. It is important to follow the manufacturer’s instructions to ensure the muffler is installed correctly and functions as intended.

Maintenance and Troubleshooting

Regular maintenance of the 4988336 Muffler is important to ensure its longevity and optimal performance. This includes checking for signs of wear and tear, ensuring all connections are secure, and addressing any issues promptly. Common troubleshooting tips for this muffler include listening for unusual noises, which may indicate a problem with the muffler or its installation, and checking for decreased performance, which could be a sign of a blockage or other issue.

Environmental Impact

The 4988336 Muffler contributes to reducing environmental noise pollution by effectively managing engine noise. Additionally, by ensuring efficient expulsion of exhaust gases, it plays a role in managing emissions, aligning with regulatory standards and environmental considerations. This makes it a valuable component in the effort to minimize the environmental impact of commercial trucks.

Cummins Overview

Cummins Inc. is a well-established company in the commercial truck industry, known for its commitment to quality and innovation in automotive components. With a history of developing reliable and efficient parts, Cummins has built a reputation for excellence. The company’s focus on research and development ensures that its products, like the 4988336 Muffler, meet the high standards expected in the industry.

Cummins Muffler Part 4988336 Compatibility with Engine Models

The Cummins muffler part 4988336 is designed to fit seamlessly with a range of engine models, ensuring optimal performance and noise reduction. This muffler is engineered to meet the stringent requirements of various Cummins engines, providing a reliable solution for exhaust management.

Engine Models Compatible with Part 4988336

  • 6B5.9 Series: The muffler part 4988336 is specifically tailored to fit the 6B5.9 engines. This compatibility ensures that the muffler effectively reduces exhaust noise while maintaining the engine’s performance standards.

Installation and Integration

When integrating the muffler part 4988336 into the engine system, it is crucial to follow the manufacturer’s guidelines to ensure a proper fit and function. The design of this muffler allows for easy installation, minimizing downtime and ensuring that the engine operates efficiently.

Performance Benefits

The use of the Cummins muffler part 4988336 offers several performance benefits, including:

  • Noise Reduction: The muffler effectively reduces exhaust noise, contributing to a quieter operating environment.
  • Efficiency: By managing exhaust flow, the muffler helps maintain optimal engine efficiency.
  • Durability: Constructed with high-quality materials, the muffler is built to withstand the rigors of continuous use, ensuring long-term reliability.

Compatibility Considerations

When considering the compatibility of the muffler part 4988336 with different engine models, it is essential to verify the specific requirements and configurations of each engine. This ensures that the muffler fits correctly and functions as intended, providing the best possible performance and reliability.

Part 4988336 Muffler Component Usage

The part 4988336 Muffler is a component in the exhaust system of various engine installations. It is designed to reduce the noise produced by the engine and to manage the flow of exhaust gases.

When integrated into an engine kit, the muffler works in conjunction with the exhaust manifold, catalytic converter, and tailpipe. Its primary function is to attenuate the sound waves generated by the engine, ensuring a quieter operation. Additionally, it helps in maintaining the backpressure within the exhaust system, which is vital for the efficient operation of the catalytic converter and overall engine performance.

In the context of an engine installation, the muffler is connected to the exhaust manifold via the exhaust pipe. This connection ensures that the hot gases expelled from the engine cylinders are directed away from the engine bay. The muffler then processes these gases, reducing their noise level before they are expelled into the atmosphere through the tailpipe.

The muffler’s role extends beyond noise reduction. It also plays a part in the thermal management of the exhaust system. By dissipating heat, it helps protect other components from excessive temperatures, contributing to the longevity and reliability of the engine installation.

Furthermore, the muffler is often designed to complement the performance characteristics of the engine. In high-performance engine kits, for instance, the muffler may be engineered to allow for better exhaust gas flow, enhancing the engine’s power output while still managing noise levels effectively.

Conclusion

In summary, the part 4988336 Muffler is a multifaceted component that ensures the engine operates efficiently, quietly, and reliably within any engine installation. Its design and features contribute to improved engine performance, compliance with noise regulations, and reduced environmental impact.


  1. Kasab, J., & Strzelec, A. (2020). Automotive Emissions Regulations and Exhaust Aftertreatment Systems. SAE International.

  2. Reif, K. (2014). Fundamentals of Automotive and Engine Technology: Standard Drives, Hybrid Drives, Brakes, Safety Systems. Springer Vieweg.

  3. Bari, S. (2013). Diesel Engine Combustion, Emissions and Condition Monitoring. InTech.

* 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.