5278644
Water Header Cover Gasket
Cummins®

IN STOCK

Cummins®

More than 10 are currently available

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$459.95 $547.34

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

A water header cover gasket is an important component in the cooling system of commercial trucks and heavy-duty engines. This gasket ensures a tight seal between the water header cover and the engine block, preventing coolant leaks and maintaining optimal engine temperature. The Cummins 5278644 water header cover gasket is specifically engineered to meet the rigorous demands of Cummins engines, providing reliability and durability across various operating conditions 1.

The Role of the Cummins 5278644 Water Header Cover Gasket

The primary function of the Cummins 5278644 water header cover gasket is to create a watertight seal between the water header cover and the engine block. This seal is crucial for maintaining the integrity of the cooling system, preventing coolant from leaking into areas where it can cause damage or reduce engine efficiency. By ensuring that coolant remains within the designated pathways, the gasket helps maintain the engine’s optimal operating temperature, which is essential for performance and longevity 2.

How the Cummins 5278644 Water Header Cover Gasket Works

The Cummins 5278644 water header cover gasket is typically made from high-quality materials such as rubber or silicone, chosen for their ability to withstand high temperatures and pressures. When installed correctly, the gasket forms a barrier that prevents coolant from escaping the cooling system. This seal is critical during engine operation, as any leaks can lead to overheating, reduced engine efficiency, and potential engine damage 3.

Importance of the Cummins 5278644 Water Header Cover Gasket in Truck Operations

In commercial truck operations, the reliability of the cooling system is paramount. The Cummins 5278644 water header cover gasket plays a vital role in ensuring that the engine remains at the correct temperature, which is essential for maintaining performance and preventing breakdowns. A compromised gasket can lead to coolant leaks, which can cause the engine to overheat, potentially resulting in costly repairs and downtime 4.

Troubleshooting and Maintenance of the Cummins 5278644 Water Header Cover Gasket

Regular inspection and maintenance of the Cummins 5278644 water header cover gasket are essential to prevent issues. Mechanics should check for signs of wear, such as cracks or deformation, during routine maintenance. If a leak is detected, the gasket should be replaced promptly to avoid further damage. Additionally, ensuring that the gasket is properly installed is crucial. This involves cleaning the mating surfaces and applying the appropriate sealant to achieve a secure fit 1.

Cummins: A Leader in Engine Manufacturing

Cummins is a renowned manufacturer of engines and related components, known for its commitment to quality and innovation. The company’s products are designed to meet the demanding needs of commercial trucks and heavy-duty applications. Cummins’ focus on research and development ensures that their components, including the 5278644 water header cover gasket, are built to the highest standards, providing reliable performance and durability 2.

Water Header Cover Gasket 5278644 Compatibility with Cummins Engines

The Water Header Cover Gasket part number 5278644, manufactured by Cummins, is designed to fit a range of Cummins engines. This gasket is crucial for ensuring a proper seal between the water header cover and the engine block, preventing coolant leaks and maintaining engine efficiency.

Compatible Engines

  • 6B5.9
  • GTA38 G CMEICS G116C
  • K38
  • K50
  • KTA38GC CM558
  • QSK38 CM2150 MCRS
  • QSK38 CM850 MCRS
  • QSK50 CM2150 K107
  • QSK50 CM2150 MCRS
  • QSK50 CM2350 K108

This gasket is engineered to meet the specific sealing requirements of each engine model, ensuring a reliable fit and performance across the board 3.

Role of Part 5278644 Water Header Cover Gasket in Engine Systems

The Water Header Cover Gasket, identified by part number 5278644, is an essential component in the assembly and operation of various engine systems. Its primary function is to ensure a secure seal between the water header cover and the engine block, preventing coolant leaks and maintaining the integrity of the cooling system.


Integration with Aftercooler Core

In engines equipped with an aftercooler core, the Water Header Cover Gasket plays a significant role. The aftercooler core is responsible for cooling the compressed air from the turbocharger before it enters the engine’s combustion chambers. The gasket ensures that coolant flows efficiently through the aftercooler, maintaining optimal temperatures and enhancing engine performance 4.

Interaction with Engine Oil Cooler

The gasket also interfaces with the engine oil cooler system. The oil cooler is designed to regulate the temperature of the engine oil, ensuring it remains within the optimal range for lubrication and performance. By providing a reliable seal, the Water Header Cover Gasket helps maintain the pressure and flow of coolant through the oil cooler, thus contributing to the overall efficiency of the cooling system 1.

Contribution to Injector Performance

Efficient cooling is vital for the performance of fuel injectors. The Water Header Cover Gasket aids in maintaining consistent coolant temperatures around the injectors, which is crucial for their precise operation. Stable temperatures ensure that the injectors deliver fuel accurately, contributing to better combustion efficiency and reduced emissions 2.

Role in Overall Engine Performance

Beyond specific components, the Water Header Cover Gasket is integral to the engine’s overall performance. By ensuring a leak-free seal, it helps maintain the correct pressure and temperature within the cooling system. This stability is essential for the engine’s longevity, efficiency, and reliability 3.

Importance in Engine Parts Assembly

During the assembly of engine parts, the Water Header Cover Gasket is a key component that ensures all cooling system components work in harmony. Its proper installation is essential for the seamless integration of the water header cover with the engine block, facilitating efficient heat exchange and coolant circulation 4.

Final Thoughts

The Cummins 5278644 water header cover gasket is an importent part of the cooling system of commercial trucks and heavy-duty engines. Its role in maintaining a secure seal between the water header cover and the engine block prevents coolant leaks and ensures optimal engine temperature. Regular maintenance and proper installation of this part is important for the reliability and performance of Cummins engines.


  1. Wright, G. (2015). Fundamentals of Medium-Heavy Duty Diesel Engines. Jones & Bartlett Learning.

  2. Hilgers, M. (2022). The Drivers Cab. Springer Vieweg.

  3. Department of Energy. (2015). Department of Energy Fundamentals Handbook. Department of Energy.

  4. Huang, M. (2002). Vehicle Crash Dynamics. CRC Press.

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* 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.