4371866
BREATHER,CRANKCASE
Cummins®

The BREATHER, CRANKCASE (Part #4371866) manufactured by Cummins is a component designed to facilitate the proper ventilation of the crankcase in commercial truck engines. This part plays a role in maintaining the engine’s operational efficiency by managing the pressure and contaminants within the crankcase.

Basic Concepts of Crankcase Breathers

Crankcase breathers are components that allow for the release of gases and vapors that accumulate within the engine’s crankcase. These breathers function by providing a controlled path for these byproducts to escape, which helps maintain a stable pressure environment within the crankcase. Proper ventilation is important for preventing the buildup of pressure and contaminants, which can adversely affect engine performance and longevity ¹.

Purpose and Function of the 4371866 Breather, Crankcase

The 4371866 Breather, Crankcase is specifically designed to contribute to the overall operation and efficiency of the truck’s engine. It plays a role in managing the pressure within the crankcase by allowing gases and vapors to escape, thus preventing pressure buildup. Additionally, it helps in filtering out contaminants that may enter the crankcase, thereby protecting internal engine components from damage and ensuring smooth engine operation ².

Key Features

The 4371866 Breather, Crankcase is constructed from durable materials that are designed to withstand the harsh conditions within the engine compartment. Its design includes features such as a filtration system to trap contaminants and a venting mechanism to release gases and vapors. These attributes enhance the breather’s performance and durability, ensuring it can effectively manage crankcase pressure and contaminants over the long term.

Benefits of Using the 4371866 Breather, Crankcase

Using the 4371866 Breather, Crankcase can lead to improved engine performance by ensuring that the crankcase maintains optimal pressure levels and remains free from contaminants. This can contribute to extended component lifespan and enhanced overall reliability of the truck’s engine system. Proper ventilation and contaminant management are key factors in achieving these benefits.

Installation and Compatibility

For the proper installation of the 4371866 Breather, Crankcase, it is important to follow manufacturer guidelines to ensure it is correctly positioned and secured within the engine system. This part is compatible with various Cummins engine models, and it may also be suitable for other truck makes and models, depending on specific engine configurations and requirements.

Maintenance and Troubleshooting

Routine maintenance of the 4371866 Breather, Crankcase involves regular inspections to check for signs of wear or damage. Common issues that may arise include clogging of the filtration system or malfunction of the venting mechanism. Troubleshooting steps may involve cleaning or replacing the breather if necessary. Regular inspections and replacements, when needed, are important to ensure the breather continues to perform its function effectively.

Cummins: A Brief Overview

Cummins Inc. is a well-established manufacturer in the commercial truck industry, known for its wide range of engine components and systems. The company has a history of innovation and commitment to quality, which is reflected in its product offerings. Cummins’ reputation for producing reliable and high-performance engine components makes it a preferred choice among commercial truck operators and maintenance professionals.

Engine Compatibility for Part 4371866

The BREATHER, CRANKCASE part number 4371866, manufactured by Cummins, is compatible with several engine models. This part is essential for maintaining the integrity of the crankcase ventilation system, ensuring that the engine operates efficiently and safely.

Compatible Engines

• G855 CM558
• GTA855 CM558 (CM2358)
• G101
• K19
• KTA19GC
• KTA19GC CM558
• N14 G
• QSK19 CM500

Grouping of Compatible Engines

• CM558 Series:

  • G855 CM558
  • GTA855 CM558 (CM2358)
  • KTA19GC CM558

• Other Compatible Engines:

  • G101
  • K19
  • N14 G
  • QSK19 CM500

This part is designed to fit seamlessly within these engine configurations, ensuring optimal performance and longevity.

Role of Part 4371866 BREATHER,CRANKCASE in Engine Systems

The 4371866 BREATHER,CRANKCASE is an essential component in managing the internal environment of engine systems. It is strategically integrated into various engine components to ensure optimal performance and longevity.

Integration with Engine Components

1. Crankcase Breather Arrangement:

   • The breather is a key element in the crankcase breather arrangement. It allows for the release of pressure built up within the crankcase, preventing the accumulation of harmful gases and moisture. This helps maintain a stable environment within the crankcase, ensuring smooth engine operation.

2. Valve Cover:

   • Positioned beneath the valve cover, the crankcase breather works in conjunction with the valve cover to manage ventilation. It ensures that any gases produced during combustion are effectively vented, reducing the risk of oil contamination and component wear.

3. Base Parts:

   • The integration of the breather with base parts of the engine is vital for maintaining a balanced pressure system. It helps in preventing oil leaks and ensures that the engine’s internal components remain lubricated and cool.

4. Rocker Housing Cover and Rocker Lever Cover:

   • These covers often house the breather system, allowing for efficient ventilation of the crankcase. The breather helps in expelling gases that could otherwise lead to increased pressure, which might affect the performance of the rocker arms and other overhead components.

5. Cam Follower Cover:

   • The breather is also integrated into the cam follower cover arrangement. This ensures that the camshaft and its followers operate in a clean, pressure-regulated environment, enhancing the durability and efficiency of these critical engine parts.

6. CCV System Retrofit Kit:

   • When retrofitting an engine with a Crankcase Ventilation (CCV) system, the breather plays a significant role. It aids in the effective circulation of gases, ensuring that the retrofit kit functions as intended, thereby improving engine efficiency and reducing emissions.

7. Breather Location:

   • The specific location of the breather within the engine is designed to maximize its effectiveness. Typically placed near the top of the crankcase, it ensures that gases are expelled before they can cause damage or interfere with other engine operations.

Conclusion

In summary, the 4371866 BREATHER,CRANKCASE is a fundamental component in the ventilation and pressure management within various engine systems. Its integration with components such as the valve cover, base parts, and rocker housing cover ensures that the engine operates efficiently and remains well-maintained over time.