3930408
Oil Pan Gasket
Cummins®

The Cummins 3930408 Oil Pan Gasket is a component designed to seal the oil pan to the engine block. This gasket plays a role in maintaining the integrity of the oil system within the engine, ensuring that oil remains contained and does not leak out, which is vital for the engine’s lubrication and cooling processes ¹.

Basic Concepts of Oil Pan Gaskets

An oil pan gasket is a sealing component positioned between the oil pan and the engine block. Its function is to create a barrier that prevents oil from escaping the oil pan, which holds the engine’s lubricant. Maintaining a sealed oil system is important for ensuring that the engine receives consistent lubrication, which reduces friction and wear on moving parts ³.

Purpose of the 3930408 Oil Pan Gasket

The 3930408 Oil Pan Gasket is specifically engineered to fit certain Cummins engines, contributing to their operation by providing a reliable seal between the oil pan and the engine block. This seal helps maintain oil pressure and ensures that the lubrication system functions effectively, which supports overall engine performance and longevity ².

Key Features

The 3930408 is characterized by its material composition, which is designed to withstand the high temperatures and pressures within the engine compartment. Its design attributes include precise dimensions to ensure a proper fit and effective sealing. Additionally, it may possess unique characteristics such as multi-layer construction or reinforced edges to enhance its performance and durability under demanding conditions ³.

Benefits

Using the 3930408 can lead to improved engine efficiency due to its reliable sealing properties, which help maintain optimal oil levels and pressure. It reduces the risk of oil leaks, which can lead to engine damage from insufficient lubrication. Furthermore, by providing a secure seal, it enhances engine protection against contaminants that could enter through a compromised gasket ¹.

Installation Considerations

Proper installation of the 3930408 involves preparing the mating surfaces to ensure they are clean and free of debris. This preparation is important for achieving a proper seal. Torque specifications for fastening the oil pan should be followed to ensure that the gasket is compressed adequately without being overtightened, which could lead to damage ².

Troubleshooting Common Issues

Common problems associated with oil pan gaskets include leaks and failure symptoms such as oil spots under the vehicle or a noticeable drop in oil levels. Troubleshooting steps may involve inspecting the gasket for signs of wear or damage, checking for proper installation, and ensuring that the mating surfaces are in good condition. Addressing these issues promptly can prevent more significant engine problems ³.

Maintenance Tips

To maintain the 3930408, regular inspections should be conducted as part of routine engine maintenance. Signs of wear or damage, such as cracks or hardening, may indicate the need for replacement. It is also important to monitor oil levels and look for any signs of leaks, which could suggest a failing gasket ¹.

Cummins Overview

Cummins Inc. is a well-established manufacturer in the commercial truck industry, known for its range of diesel engines and related technologies. With a history of innovation and quality, Cummins has built a reputation for producing reliable and high-performance engine components, including the 3930408 ².

Compatibility of Oil Pan Gasket Part 3930408 with Cummins Engines

The Oil Pan Gasket part number 3930408, manufactured by Cummins, is designed to fit a variety of Cummins engines. This gasket is crucial for ensuring a proper seal between the oil pan and the engine block, preventing oil leaks and maintaining engine efficiency.

ISC Series Engines

• ISC CM554
• ISC CM850

The Oil Pan Gasket part 3930408 is compatible with both the ISC CM554 and ISC CM850 engines. These engines are part of the ISC series, known for their robust performance and reliability in heavy-duty applications.

ISL Series Engines

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

The ISL series engines, including the ISL CM2150, ISL CM554, ISL G CM2180, ISL9 CM2150 SN, ISL9 CM2250, and ISL9.5 CM2880 L138, are all compatible with the Oil Pan Gasket part 3930408. This series is known for its high power output and efficiency, making it suitable for a wide range of applications.

L Series Engines

• L GAS PLUS CM556
• L8.9
• L8.9 CM2670 L134C
• L8.9G CMOH2.0 L125B
• L9 CM2670 L128B

The L series engines, such as the L GAS PLUS CM556, L8.9, L8.9 CM2670 L134C, L8.9G CMOH2.0 L125B, and L9 CM2670 L128B, are also compatible with the Oil Pan Gasket part 3930408. These engines are designed for durability and performance, often used in various industrial and commercial applications.

QSC and QSL Series Engines

• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM554
• QSL9 CM850 (CM2850)

The Oil Pan Gasket part 3930408 fits the QSC8.3 CM554, QSC8.3 CM850 (CM2850), QSC9 CM2250 / QSL9 CM2250, QSL8.9 CM2150 L141, QSL9 CM2250, QSL9 CM2350 L102, QSL9 CM554, and QSL9 CM850 (CM2850) engines. These engines are part of the QSC and QSL series, which are designed for high performance and reliability in demanding environments.

This comprehensive compatibility ensures that the Oil Pan Gasket part 3930408 can be used across a wide range of Cummins engines, providing a reliable seal and contributing to the overall efficiency and longevity of the engine ².

Role of Part 3930408 Oil Pan Gasket in Engine Systems

The Oil Pan Gasket, identified by part number 3930408, is a component within the lower engine gasket kit and lower engine gasket set. Its primary function is to ensure a secure seal between the oil pan and the engine block. This seal is vital for maintaining the integrity of the lubrication system by preventing oil leaks.

When integrating the Oil Pan Gasket into the engine system, it is positioned between the oil pan and the engine block. This placement is part of a broader assembly that includes other components from the lower engine gasket set. The gasket’s role is to create a barrier that keeps engine oil contained within the oil pan, ensuring that the oil circulates effectively through the engine without any loss.

In the context of the lower engine gasket kit, the Oil Pan Gasket works in conjunction with other gaskets and seals to maintain the overall integrity of the engine’s lower end. This includes sealing various mating surfaces to prevent oil from escaping and contaminants from entering the engine’s lubrication system.

The effectiveness of the Oil Pan Gasket is paramount for the proper functioning of the oil pan, which serves as a reservoir for engine oil. The oil pan collects and stores oil, which is then pumped through the engine to lubricate moving parts, reduce friction, and dissipate heat. A properly sealed oil pan, facilitated by the Oil Pan Gasket, ensures that the oil pan can perform its role without any compromise.

In summary, the Oil Pan Gasket (part 3930408) is a key element in the lower engine gasket set, ensuring that the oil pan and engine block interface is sealed correctly. This seal is fundamental for the efficient operation of the engine’s lubrication system, contributing to the overall performance and longevity of the engine ³.

Conclusion

The Cummins 3930408 Oil Pan Gasket is a critical component for maintaining the integrity of the engine’s oil system. Its proper installation and maintenance are essential for ensuring optimal engine performance and longevity. By understanding its role, features, and compatibility with various Cummins engines, users can ensure that their engines operate efficiently and reliably.