4946239
Valve Cover Gasket
Cummins®

Introduction

The Valve Cover Gasket 4946239, manufactured by Cummins, is a critical component for commercial truck engines. This gasket ensures a seal between the valve cover and the cylinder head, preventing oil leaks and maintaining the integrity of the engine’s lubrication system.

Basic Concepts of Valve Cover Gaskets

A valve cover gasket serves as a seal between the valve cover and the cylinder head of an engine. Positioned on top of the engine, it contains engine oil within the valve train area. These gaskets are typically made from materials such as rubber, cork, or a composite of both, chosen for their ability to withstand high temperatures and oil exposure ¹. The material selection is essential for ensuring the gasket can maintain a reliable seal under varying engine conditions.

Role of the Valve Cover Gasket in Truck Operation

The Valve Cover Gasket 4946239 ensures that engine oil remains within the valve cover area, which is vital for lubricating the valve train components, including the camshaft, lifters, and rocker arms. Proper lubrication reduces friction and wear on these parts, contributing to engine performance and efficiency. Additionally, by preventing oil leaks, the gasket helps maintain clean engine compartments, reducing the risk of fire and other hazards associated with oil spills ².

Key Features of the Valve Cover Gasket 4946239

The Cummins Valve Cover Gasket 4946239 is crafted from high-quality materials that offer superior resistance to oil and heat, ensuring durability and reliability in demanding truck engine environments. The gasket’s design includes precise cutouts and contours that match the valve cover and cylinder head, facilitating a snug fit and effective seal. These features enhance its performance and contribute to its longevity ³.

Benefits of Using the Valve Cover Gasket 4946239

Utilizing this Cummins part offers several advantages. Its design and material composition provide improved engine sealing, minimizing the risk of oil leaks. The gasket’s resistance to oil and heat ensures it can withstand the harsh conditions within a truck engine, contributing to its longevity. These benefits are instrumental in maintaining overall truck performance and reducing maintenance needs ⁴.

Troubleshooting and Maintenance

Identifying common issues with valve cover gaskets, such as leaks or wear, is important for maintaining engine health. Regular inspections during oil changes can help detect early signs of gasket failure. For maintenance, it is recommended to replace the valve cover gasket according to the manufacturer’s schedule or when signs of wear are observed. This practice ensures the gasket continues to provide an effective seal, contributing to engine efficiency and longevity.

Compatibility with Cummins Engines

The Valve Cover Gasket 4946239 is designed to fit a variety of Cummins engine models, ensuring a proper seal between the valve cover and the engine block, preventing leaks and maintaining engine efficiency.

Compatible Engines

• B4.5 CM2350 B129B
• D4.0 CM2620 D103B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB4.5 CM2350 B104
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123
• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

Grouping of Compatible Engines

• CM2350 Series:

  • B4.5 CM2350 B129B
  • F3.8 CM2350 F120B
  • F3.8 CM2350 F128C
  • ISB4.5 CM2350 B104
  • ISF3.8 CM2350 F109
  • QSF3.8 CM2350 F107

• CM2620 Series:

  • D4.0 CM2620 D103B
  • F3.8 CM2620 F137B
  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C

• CM2220 Series:

  • ISF3.8 CM2220 AN
  • ISF3.8 CM2220 F103
  • ISF4.5 CM2220 F123

• CM2880 Series:

  • QSF3.8 CM2880 F112

• Others:

  • F3.8 F102

This gasket is engineered to provide a precise fit for each of these engine models, ensuring optimal performance and longevity.

Conclusion

The Valve Cover Gasket 4946239 by Cummins is a vital component in maintaining the efficiency and performance of commercial truck engines. Its design and material composition ensure durability and reliability, contributing to the overall health and longevity of the engine. Regular maintenance and timely replacement of this part are recommended to ensure continued engine performance and reduce the risk of oil leaks and associated hazards.