3912687
Oil Filler Tube
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$164.95 $196.29

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 3912687 Oil Filler Tube is a component designed for use in heavy-duty trucks, playing a significant role in the maintenance and operation of these vehicles. Cummins Inc., a well-regarded manufacturer in the automotive and heavy-duty truck industry, produces this part. This overview will explore the purpose and significance of the Cummins 3912687 Oil Filler Tube, providing insights into its function and the manufacturer behind it.

Basic Concepts of Oil Filler Tubes

An oil filler tube is a component that allows for the addition of oil to an engine’s lubrication system. Its function is vital for maintaining the proper lubrication levels within the engine, which is crucial for the engine’s performance and longevity. Adequate lubrication reduces friction between moving parts, minimizes wear and tear, and helps dissipate heat, contributing to the engine’s overall efficiency and durability 1.

Purpose of the Cummins 3912687 Oil Filler Tube

The Cummins 3912687 Oil Filler Tube is specifically designed to facilitate the addition of oil to the engine, ensuring that the lubrication system remains adequately filled. This part plays a role in maintaining the engine’s lubrication levels, which is important for the engine’s operation and longevity. By providing a secure and efficient means to add oil, it helps ensure that the engine operates within optimal lubrication parameters 2.

Key Features

The Cummins 3912687 Oil Filler Tube is constructed with durability and effectiveness in mind. It is made from materials that are resistant to the high temperatures and pressures found within an engine environment. The design may include features such as a secure fitting mechanism to prevent leaks and ensure a tight seal when adding oil. These features contribute to the tube’s reliability and longevity, making it a suitable choice for heavy-duty applications 3.

Benefits of Using the Cummins 3912687 Oil Filler Tube

Using the Cummins 3912687 Oil Filler Tube offers several advantages. Its design allows for ease of use during oil changes or top-offs, which can simplify maintenance procedures. Compatibility with Cummins engines ensures that it meets the specific requirements of these engines, potentially contributing to engine efficiency and maintenance simplicity. The robust construction and design features also enhance the tube’s durability, reducing the need for frequent replacements.

Installation and Compatibility

Proper installation of the Cummins 3912687 Oil Filler Tube is important for its effective function and the engine’s overall performance. It is designed to be compatible with various Cummins engine models, though specific installation considerations or requirements may vary. Following manufacturer guidelines during installation can help ensure that the tube functions as intended and contributes to the engine’s lubrication system.

Troubleshooting and Maintenance

Common issues with oil filler tubes can include leaks or blockages, which may affect the engine’s lubrication system. Regular inspection and cleaning can help maintain the tube’s effectiveness and longevity. Addressing any issues promptly and following maintenance guidelines can help prevent more significant problems and ensure the engine operates efficiently.

Safety Considerations

When working with oil filler tubes and engine lubrication systems, it is important to follow safety practices. This includes ensuring that the engine is cool before attempting any maintenance or repairs and using the appropriate tools and equipment. Understanding the risks associated with improper installation or maintenance can help mitigate these risks and ensure a safe working environment.

Cummins as a Manufacturer

Cummins Inc. has a history of producing quality engine components for the automotive and heavy-duty truck industry. Their commitment to innovation and quality is evident in the design and construction of parts like the Cummins 3912687 Oil Filler Tube. Cummins’ role in the industry and their focus on quality and innovation make them a reputable choice for engine components.

Cummins Oil Filler Tube 3912687 Compatibility

The Cummins Oil Filler Tube part number 3912687 is designed to fit a variety of Cummins engines, ensuring proper oil management and maintenance. Here is a detailed look at its compatibility with specific engine models:

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of Cummins’ range of diesel engines, known for their robust performance and reliability. The Oil Filler Tube 3912687 is specifically engineered to fit these engines, facilitating easy oil level checks and refills. This part is crucial for maintaining the engine’s oil levels, ensuring optimal lubrication and performance.

B5.9 G Engine

The B5.9 G engine, another variant in Cummins’ lineup, also benefits from the use of the Oil Filler Tube 3912687. This part is designed to seamlessly integrate with the B5.9 G engine, providing a reliable method for monitoring and managing oil levels. Its precise fit ensures that the engine operates smoothly and efficiently.

ISBE CM800 Engine

The ISBE CM800 engine, a high-performance model in Cummins’ portfolio, is compatible with the Oil Filler Tube 3912687. This part is essential for the ISBE CM800, as it allows for straightforward oil level checks and refills, which are critical for maintaining the engine’s performance and longevity.

QSB5.9 CM550 Engine

The QSB5.9 CM550 engine, known for its versatility and power, is another engine model that the Oil Filler Tube 3912687 fits perfectly. This part ensures that the oil levels in the QSB5.9 CM550 engine are maintained correctly, contributing to the engine’s overall efficiency and reliability.

By ensuring that the Oil Filler Tube 3912687 fits these specific Cummins engines, users can confidently manage their engine’s oil levels, promoting better maintenance practices and extending the engine’s lifespan.

Role of Part 3912687 Oil Filler Tube in Engine Systems

The Part 3912687 Oil Filler Tube is an essential component in the lubrication system of an engine, facilitating the process of adding oil to the system. Its integration with various engine components ensures efficient operation and maintenance of the engine’s lubrication needs.

Integration with the Oil Fill Arrangement

The Oil Filler Tube is a key element in the Oil Fill Arrangement, providing a conduit for oil to be introduced into the engine. This arrangement typically includes the oil fill cap, which is mounted on the Oil Filler Tube, allowing for easy access during oil changes or top-ups. The design of the tube ensures a secure fit, preventing oil leaks and maintaining the integrity of the lubrication system.

Connection to the Cylinder Block

The Oil Filler Tube is strategically positioned to connect directly or indirectly to the Cylinder Block. The Cylinder Block houses the cylinders, pistons, and other critical components that require lubrication. By ensuring a consistent supply of oil, the tube plays a part in reducing friction and wear on these moving parts, contributing to the overall efficiency and longevity of the engine.

Relationship with the Oil Fill Cover

The Oil Fill Cover, often a part of the Oil Fill Arrangement, is secured over the Oil Filler Tube to create a sealed environment. This cover prevents contaminants from entering the engine while allowing for periodic oil level checks and additions. The tube’s design complements the cover, ensuring a snug fit that maintains the seal’s effectiveness over time.

Overall Functionality in Engine Systems

In summary, the Part 3912687 Oil Filler Tube serves as a vital link in the engine’s lubrication system, interacting with the Oil Fill Arrangement, Cylinder Block, and Oil Fill Cover. Its role in facilitating oil addition and maintaining system integrity underscores its importance in the operational dynamics of engine systems.

Conclusion

The Cummins 3912687 Oil Filler Tube is a critical component in the maintenance and operation of heavy-duty engines. Its design and construction are tailored to ensure efficient oil addition and maintenance of the engine’s lubrication system. By understanding its purpose, features, and benefits, users can appreciate the importance of this part in ensuring the longevity and performance of Cummins engines.


  1. Dempsey, P. (2018). Troubleshooting and Repairing Diesel Engines, 5th Edition. McGraw-Hill.

  2. Xin, Q. (2011). Diesel Engine System Design. Woodhead Publishing Limited.

  3. Giles, T. (2019). Automotive Engines Diagnosis Repair and Rebuilding. Cengage Learning.

SPECIFICATIONS

Hazard Description
Non-Hazardous (NOI, ICE/Auto)
Package Dimensions
12.0 x 6.0 x 2.0 in
Weight
0.8 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.