3038903
Rocker Lever Shaft Plug
Cummins®

IN STOCK

Cummins®

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$14.95 $17.79

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 Rocker Lever Shaft Plug 3038903, manufactured by Cummins, is a component designed to play a role in the operation of heavy-duty trucks. Cummins, a well-established name in the automotive industry, is known for its commitment to quality and innovation in engine technology. This plug is integral to the functionality of the engine, ensuring smooth and efficient operation of the truck.

Basic Concepts of Rocker Lever Shaft Plugs

A Rocker Lever Shaft Plug is a component that seals the end of the rocker lever shaft within an engine. Its function is to prevent the escape of oil and other lubricants, which are vital for the lubrication of moving parts within the engine. This plug interacts with the rocker lever shaft and other components to maintain the integrity of the lubrication system. The basic principle behind its operation is to create a secure seal that keeps lubricants contained, thereby supporting the efficient movement of engine parts 1.

Purpose and Role in Truck Operation

The 3038903 Rocker Lever Shaft Plug plays a specific role in the operation of a truck by ensuring that the rocker lever shaft remains properly lubricated. This lubrication is vital for the smooth operation of the valve train, which in turn affects the overall efficiency and performance of the engine. By maintaining the lubrication system’s integrity, this plug contributes to the engine’s durability and reliability, which are essential for the consistent performance of heavy-duty trucks 2.

Key Features

The 3038903 Rocker Lever Shaft Plug is characterized by its robust design and high-quality materials. It is engineered to withstand the demanding conditions within a heavy-duty truck engine. Unique characteristics of this plug include its precise fit and durable construction, which set it apart from other similar parts. These features ensure that it can effectively perform its role in the engine’s lubrication system.

Benefits

Using the 3038903 Rocker Lever Shaft Plug is associated with several benefits. These include improved engine performance due to effective lubrication, enhanced durability that extends the lifespan of the engine components, and increased reliability that ensures consistent truck operation. These benefits collectively contribute to the overall efficiency and performance of the truck.

Installation Process

Proper installation of the 3038903 Rocker Lever Shaft Plug involves several steps. First, ensure that the engine is cool and that all necessary tools and equipment are at hand. Begin by cleaning the area around the rocker lever shaft to remove any debris or old lubricants. Carefully insert the plug into the end of the shaft, ensuring a snug fit. Use the appropriate tools to secure the plug in place. Throughout the process, adhere to safety precautions to prevent injury or damage to the engine components.

Troubleshooting and Maintenance

Common issues with the 3038903 Rocker Lever Shaft Plug may include leaks or damage to the plug. To troubleshoot these issues, inspect the plug for signs of wear or damage and ensure that it is properly seated in the shaft. Regular maintenance involves checking the plug during routine engine inspections and replacing it if any signs of wear are detected. This proactive approach helps ensure the longevity and optimal performance of the part.

Compatibility and Applications

The 3038903 Rocker Lever Shaft Plug is designed for use in specific types of engines and trucks. Its applications span various commercial and industrial settings, where heavy-duty trucks are commonly employed. Ensuring compatibility with the specific engine model is vital for optimal performance and longevity of the plug.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer in the automotive industry, with a history of innovation and quality. The company’s reputation is built on its commitment to developing reliable and efficient engine components. Cummins’ contributions to the automotive sector include a wide range of products that enhance the performance and durability of engines. The 3038903 Rocker Lever Shaft Plug is one such product, reflecting Cummins’ dedication to quality and innovation in engine technology 3.

Compatibility of Rocker Lever Shaft Plug (Part 3038903) with Cummins Engines

The Rocker Lever Shaft Plug (part number 3038903) manufactured by Cummins is designed to fit seamlessly within a range of Cummins engines, ensuring optimal performance and reliability. This part is integral to the engine’s operation, providing a secure fit and maintaining the integrity of the rocker arm assembly.

N14 G and N14 MECHANICAL Engines

For the N14 G and N14 MECHANICAL engines, the Rocker Lever Shaft Plug is a critical component that ensures the rocker arms operate smoothly. This plug fits precisely into the designated area, maintaining the alignment and functionality of the rocker arm shaft. Its design ensures that it can withstand the high pressures and temperatures typical of these engines, contributing to their durability and efficiency.

NH/NT 855 Engines

Similarly, in the NH/NT 855 engines, the Rocker Lever Shaft Plug (part number 3038903) plays a vital role in the engine’s operation. This part is engineered to fit the specific requirements of the NH/NT 855 engines, ensuring that the rocker arm assembly functions correctly. The plug’s design allows for easy installation and removal, facilitating maintenance and repairs. Its robust construction ensures that it can endure the demanding conditions within the engine, providing long-lasting performance.

Grouping of Engines

The N14 G and N14 MECHANICAL engines are grouped together due to their similar design and operational characteristics. Both engines benefit from the precise fit and functionality of the Rocker Lever Shaft Plug, ensuring that the rocker arm assembly operates efficiently. The NH/NT 855 engines, while distinct in their design, also require the same level of precision and reliability from this component, making the Rocker Lever Shaft Plug a versatile and essential part for these engines.

Role of Part 3038903 Rocker Lever Shaft Plug in Engine Systems

The part 3038903 Rocker Lever Shaft Plug is an integral component within various engine systems, particularly those involving the Exhaust Brake Module (EBM) and rocker arm assemblies. This plug is designed to fit into the rocker lever shaft, ensuring the proper functioning and sealing of the system.

Integration with Rocker Arm Housing and Levers

In the context of the rocker arm housing and levers, the 3038903 plug plays a significant role in maintaining the integrity of the rocker arm system. It is positioned within the rocker lever shaft to prevent any unwanted leakage or intrusion of contaminants, which could otherwise compromise the performance of the rocker arms. The plug ensures that the rocker arm housing, whether it is a standard housing or a specialized housing assembly, operates efficiently.

Function within the Exhaust Brake Module (EBM)

When considering the Exhaust Brake Module (EBM), the 3038903 plug is essential for the EBM housing and lever mechanisms. It fits into the rocker lever shaft within the EBM, contributing to the effective operation of the engine brake. This plug helps in maintaining the pressure and control necessary for the engine brake to function correctly, thereby enhancing the overall performance of the exhaust brake system.

Contribution to Engine Spares and Control Systems

In engine spares kits and control systems, the 3038903 plug is often included as a necessary component for maintaining the engine’s operational standards. It ensures that the rocker lever shaft remains sealed and functions as intended, which is vital for the longevity and reliability of the engine. The plug is also a key part of the rocker lever shaft kit, providing the necessary sealing for the rocker lever and housing assembly.

Role in Housing and Lever Assemblies

The 3038903 plug is similarly important in housing and lever assemblies, such as the housing assembly rocker and housing rocker. By fitting into the rocker lever shaft, it prevents any potential issues that could arise from unsealed or improperly sealed components. This ensures that the lever and housing operate smoothly, contributing to the efficient functioning of the entire engine system.

Ensuring System Integrity with Base Parts and Rocker Housing

Lastly, the plug is a vital component when considering base parts and rocker housing. It fits into the rocker housing assembly and rocker hsg., providing the necessary seal for the rocker lever and housing. This is particularly important in maintaining the structural and functional integrity of the rocker housing, ensuring that all components work in harmony.

Conclusion

In summary, the 3038903 Rocker Lever Shaft Plug is a fundamental part that enhances the performance and reliability of various engine systems by ensuring proper sealing and operation of the rocker lever shaft across different components and assemblies.


  1. Atkins, Richard D. An Introduction to Engine Testing and Development. SAE International, 2009.

  2. Aird, Forbes. Bosch Fuel Injection Systems. HP Books, 2001.

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

SPECIFICATIONS

Hazard Description
Non-Hazardous (NOI, ICE/Auto)
Package Dimensions
2.0 x 2.0 x 2.0 in
Weight
0.1 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.