Dorman 603-5136 Engine Coolant Reservoir for Select International Trucks

The Dorman 603-5136 Engine Coolant Reservoir is a direct replacement overflow tank designed to restore proper coolant system function on select International commercial vehicles. This reservoir captures excess coolant expelled from the radiator during normal heating and cooling cycles, then returns it to the cooling system as needed to maintain optimal fluid levels.

Key Features:

• Direct-fit replacement for worn or damaged factory reservoir
• Durable plastic construction withstands engine bay heat and vibration
• Includes integrated fluid level markings for easy inspection
• Helps prevent coolant loss and overheating issues
• Designed to match OEM specifications for reliable performance

Dorman is a trusted manufacturer of automotive replacement parts, offering quality solutions for commercial vehicle maintenance and repair. This coolant reservoir helps maintain proper cooling system operation and extends engine service life.