4058187
BREATHER,CRANKCASE
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$269.95 $321.24

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 4058187 Crankcase Breather is a component designed to manage the pressure within the crankcase of heavy-duty truck engines. Its role is significant in maintaining the engine’s operational efficiency and longevity. This breather system ensures that gases produced during engine operation are properly vented, thereby preventing the buildup of pressure that could lead to engine damage.

Basic Concepts of Crankcase Breathers

A crankcase breather is a device that allows gases to escape from the crankcase of an engine. As the engine operates, it produces gases that accumulate in the crankcase. These gases, if not properly managed, can increase pressure within the crankcase, potentially leading to oil leaks and other engine issues. The breather system functions by venting these gases to the atmosphere or recirculating them back into the engine’s intake system, thus maintaining a stable pressure environment within the crankcase 1.

Purpose of the Cummins 4058187 Crankcase Breather

This Cummins part plays a role in the operation of a truck engine by managing crankcase pressure and venting gases produced during engine operation. By ensuring that the crankcase pressure remains within optimal levels, this breather helps in maintaining engine efficiency and reducing the risk of oil leaks. It also aids in keeping the engine’s internal components clean by preventing the accumulation of contaminants that could otherwise circulate within the engine.

Key Features

The 4058187 is constructed with durability and efficiency in mind. It utilizes high-quality materials to ensure longevity and reliable performance. The design incorporates features that enhance its ability to effectively vent gases while preventing the ingress of contaminants. Its construction is robust, ensuring it can withstand the harsh conditions typical of heavy-duty truck operations.

Benefits of Using the Cummins 4058187 Crankcase Breather

Utilizing this part offers several advantages. It contributes to improved engine performance by maintaining optimal crankcase pressure. This, in turn, helps reduce wear and tear on engine components, leading to enhanced reliability and longevity of the engine. Additionally, by efficiently managing crankcase emissions, it supports environmental compliance by minimizing the release of harmful gases 2.

Installation and Compatibility

Proper installation of the 4058187 is crucial for its effective operation. It is designed to be compatible with specific engine models, ensuring a seamless integration into the engine’s system. Installation guidelines should be followed to ensure that the breather is correctly positioned and securely attached, allowing it to function as intended.

Maintenance and Troubleshooting

Routine maintenance of the 4058187 is important to ensure its continued efficient operation. This includes regular inspection for signs of wear or damage, cleaning to remove any accumulated contaminants, and replacement when necessary. Troubleshooting common issues, such as reduced efficiency or unusual noises, may involve checking for blockages or ensuring proper installation.

Environmental and Safety Considerations

The 4058187 plays a role in mitigating the environmental impact of crankcase emissions by efficiently venting gases and preventing their release into the atmosphere. Safety precautions when handling and maintaining the breather system include ensuring proper ventilation during maintenance procedures and following manufacturer guidelines to prevent accidents or injuries.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a commitment to quality, Cummins has established a strong reputation in the automotive industry. The company’s product offerings span a wide range of applications, from heavy-duty trucks to industrial equipment, demonstrating its versatility and expertise in power solutions. Cummins’ dedication to customer satisfaction is evident in its focus on delivering reliable, efficient, and environmentally responsible products.

Cummins Crankcase Breather Part 4058187 Compatibility

The Cummins Crankcase Breather part number 4058187 is designed to fit seamlessly with a range of Cummins engines, ensuring optimal performance and reliability. This part is engineered to manage the pressure within the engine’s crankcase, preventing oil contamination and ensuring the engine operates efficiently.

Engine Compatibility

  • 6B5.9 Series: The 4058187 Crankcase Breather is specifically designed to fit the 6B5.9 engine series. This engine is known for its robust construction and is widely used in various industrial applications. The breather part ensures that the crankcase pressure is regulated, which is crucial for maintaining the engine’s longevity and performance.

  • Other Cummins Engines: While the primary focus is on the 6B5.9 series, the 4058187 Crankcase Breather is also compatible with other Cummins engines that share similar design and operational parameters. This compatibility ensures that users can maintain a consistent maintenance routine across different engine models, simplifying the parts management process.

Installation and Maintenance

Proper installation of the Cummins Crankcase Breather part 4058187 is essential for the engine’s health. It should be securely attached to the crankcase, ensuring a tight seal to prevent any leaks. Regular maintenance checks should be performed to ensure the breather is functioning correctly and to replace it if any signs of wear or damage are detected.

Performance Benefits

The 4058187 Crankcase Breather plays a role in the engine’s overall performance by:

  • Regulating crankcase pressure
  • Preventing oil contamination
  • Enhancing engine efficiency
  • Extending engine life

By ensuring that the crankcase pressure is managed effectively, this part contributes to the smooth operation of the engine and helps in maintaining its peak performance over time.

Role of Part 4058187 Crankcase Breather in Engine Systems

The part 4058187 Crankcase Breather is a component in maintaining the health and efficiency of an engine system. Its primary function is to manage the pressure within the crankcase by allowing gases to escape, thus preventing the buildup of harmful contaminants and ensuring optimal engine performance.

Interaction with the Crankcase

The crankcase breather is directly connected to the crankcase, which houses the crankshaft and connecting rods. As the engine operates, it produces blow-by gases—a mixture of air, fuel, and combustion byproducts—that enter the crankcase. The breather allows these gases to be expelled, preventing pressure buildup that could lead to oil leaks or damage to seals and gaskets.

Contribution to the Drive System

An efficiently functioning crankcase breather indirectly supports the drive system by maintaining engine health. When the crankcase is free of excess pressure and contaminants, the engine operates more smoothly, which translates to better performance of the drive components, including the transmission and differential. This ensures that power is delivered consistently and efficiently to the wheels.

Impact on the Tachometer Readings

Although the tachometer primarily measures the rotational speed of the engine’s crankshaft, an efficient crankcase breather contributes to the overall stability of engine operation. By ensuring that the crankcase remains clean and pressure-balanced, the breather helps maintain consistent engine RPMs, which is reflected in stable tachometer readings. This stability is vital for accurate monitoring of engine performance and for making necessary adjustments during operation.

Conclusion

The Cummins 4058187 Crankcase Breather is a vital component in the maintenance and efficiency of heavy-duty truck engines. By managing crankcase pressure and venting gases, it ensures engine longevity, reduces the risk of oil leaks, and supports environmental compliance. Proper installation, regular maintenance, and understanding its role within the engine system are crucial for maximizing the benefits of this part.


  1. Hiereth, H., Prenninger, P., & Drexl, K. W. (2010). Charging the Internal Combustion Engine. Springer.

  2. Reif, K. (2015). Gasoline Engine Management Systems and Components. Springer Vieweg.

SPECIFICATIONS

Package Dimensions
4.75 x 4.5 x 4.25 in
Weight
0.65 lb
* 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.