3921644
Oil Filler Connection
Cummins®

The 3921644 Oil Filler Connection, manufactured by Cummins, is a component designed for use in heavy-duty trucks. It plays a role in facilitating the maintenance and operation of these vehicles by ensuring proper oil management within the engine system. Cummins, a well-established name in the heavy-duty truck industry, produces this part as part of its comprehensive range of engine components and systems ¹.

Basic Concepts of Oil Filler Connections

An oil filler connection is a component that allows for the addition of oil to a truck’s engine. Its general function is to provide a secure and efficient means of introducing oil into the engine’s lubrication system. Proper oil management is vital for maintaining engine health, as it ensures that all moving parts are adequately lubricated, reducing friction and wear ². This, in turn, contributes to the overall efficiency and longevity of the engine.

Purpose of the 3921644 Oil Filler Connection

The 3921644 Oil Filler Connection is specifically designed to facilitate the addition of oil to a truck’s engine while ensuring proper lubrication. It plays a role in maintaining the engine’s lubrication system by providing a reliable connection point for oil introduction. This part helps in maintaining the correct oil level within the engine, which is crucial for optimal engine performance and protection against wear and damage.

Key Features

The 3921644 Oil Filler Connection boasts several key features that enhance its functionality and durability. Its design is engineered to provide a secure fit and seal, preventing oil leaks during the filling process. The materials used in its construction are chosen for their durability and resistance to the harsh conditions within a truck’s engine compartment. Additionally, it may include unique attributes such as an integrated dipstick tube or a design that simplifies the oil-filling process, making it more user-friendly.

Benefits

Using the 3921644 Oil Filler Connection offers several benefits. It contributes to improved engine performance by ensuring that the engine receives the correct amount of oil for optimal lubrication. Its design and materials enhance its durability, providing longevity compared to other similar parts. Additionally, the ease of use it offers can save time during maintenance procedures, making it a valuable component for heavy-duty truck operators.

Installation Process

Installing the 3921644 Oil Filler Connection requires following a step-by-step process to ensure proper integration into the engine system. Best practices include ensuring the engine is cool before beginning the installation, using the correct tools to avoid damage, and following the manufacturer’s guidelines for torque specifications. Common pitfalls to avoid include over-tightening, which can damage the connection, and not ensuring a proper seal, which can lead to oil leaks.

Troubleshooting and Maintenance

For troubleshooting common issues related to the 3921644 Oil Filler Connection, it is important to regularly inspect the connection for signs of wear or damage. Maintenance tips to ensure its longevity include keeping the area around the connection clean and free of debris, and periodically checking the seal for integrity. Signs that the part may need replacement include persistent oil leaks or difficulty in adding oil, indicating a potential failure in the seal or connection integrity.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and reliability in the heavy-duty truck industry. Its product range includes a wide array of engine components and systems, designed to meet the demanding requirements of heavy-duty applications. Cummins’ commitment to innovation and customer satisfaction has solidified its position as a trusted name in the industry ³.

Cummins Engine Part 3921644: Oil Filler Connection

The Cummins Oil Filler Connection part number 3921644 is a critical component in several of Cummins’ engine models. This part is designed to facilitate the process of adding oil to the engine, ensuring that the lubrication system remains properly filled and operational. The Oil Filler Connection is integral to maintaining engine health and performance, as it allows for easy and safe oil replenishment.

Engine Compatibility

The Oil Filler Connection part 3921644 is compatible with a range of Cummins engines, including:

• 4B3.9
• 6B5.9
• 6C8.3
• B4.5
• B5.9 G
• B5.9 GAS PLUS CM556
• C GAS PLUS CM556
• C8.3 G
• ISB CM550
• ISB5.9G CM2180
• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250
• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250
• ISL9.5 CM2880 L138
• ISX CM570
• ISX CM870
• ISX CM871
• L8.9
• L8.9 CM2670 L134C

Grouping of Compatible Engines

The compatibility of the Oil Filler Connection part 3921644 spans across various engine series and configurations. Here is a breakdown of the engines grouped by their series:

• 4B Series:

  • 4B3.9

• 6B Series:

  • 6B5.9

• 6C Series:

  • 6C8.3

• B Series:

  • B4.5
  • B5.9 G
  • B5.9 GAS PLUS CM556

• C Series:

  • C GAS PLUS CM556
  • C8.3 G

• ISB Series:

  • ISB CM550
  • ISB5.9G CM2180

• ISC Series:

  • ISC CM2150
  • ISC CM554
  • ISC CM850
  • ISC8.3 CM2250

• ISL Series:

  • ISL CM2150
  • ISL CM554
  • ISL G CM2180
  • ISL9 CM2150 SN
  • ISL9 CM2250
  • ISL9.5 CM2880 L138

• ISX Series:

  • ISX CM570
  • ISX CM870
  • ISX CM871

• L Series:

  • L8.9
  • L8.9 CM2670 L134C

This comprehensive compatibility ensures that the Oil Filler Connection part 3921644 can be used across a wide array of Cummins engines, facilitating maintenance and ensuring operational efficiency.

Role of Part 3921644 Oil Filler Connection in Engine Systems

The Part 3921644 Oil Filler Connection is an integral component in the lubrication system of an engine, facilitating the essential process of oil filling and distribution. This component interfaces directly with the oil fill arrangement, allowing for the introduction of lubricant into the engine.

Upon installation, the oil filler connection is secured to the cylinder block, typically near the top, ensuring a sealed environment for the oil to be stored and circulated. It is often covered by an oil fill cover, which not only protects the connection but also provides a means for the user to access the system for maintenance or refilling purposes.

The design of the oil filler connection ensures that oil is directed into the cylinder block efficiently, minimizing spillage and ensuring that the lubrication system is adequately filled. This component works in conjunction with other parts of the lubrication system, such as the oil pump and oil filter, to maintain optimal engine performance by ensuring that all moving parts are properly lubricated.

In summary, the Part 3921644 Oil Filler Connection plays a significant role in the engine’s lubrication system by providing a secure and efficient means for oil to be introduced into the cylinder block, thereby supporting the overall functionality and longevity of the engine.

Conclusion

The 3921644 Oil Filler Connection is a vital component in the maintenance and operation of heavy-duty trucks, ensuring proper oil management within the engine system. Its design, features, and compatibility with a wide range of Cummins engines make it an essential part for maintaining engine health and performance. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part.