Your coolant reservoir is a critical part of your truck's cooling system. It stores excess coolant as your engine heats up and helps regulate coolant flow back into the radiator when the engine cools down. Without it, your engine can't maintain the proper operating temperature which can lead to overheating, breakdowns, or even engine damage.

Shop for Quality Replacement Coolant Reservoirs for Your 4700/4900 Truck

Our aftermarket coolant reservoirs are designed to meet or exceed OEM specifications. They're made from tough, heat-resistant materials and built to handle the high demands of commercial diesel trucks. Whether you're doing preventive maintenance or replacing a cracked tank, we've got the parts that fit your International 4700 or 4900 including replacement reservoir caps and related accessories.

What Does a Coolant Reservoir Do?

Also called an overflow tank, the coolant reservoir: - Collects expanding coolant from the radiator as engine temps rise. - Sends coolant back to the radiator as the engine cools. - Maintains proper pressure in the cooling system with the help of a reservoir cap. - Allows you to monitor coolant levels through a visible tank. In International 4700/4900 trucks, the coolant reservoir is typically located near the radiator on the passenger side under the hood mounted along the firewall or inner fender for easy access.

Signs You Need a Reservoir Replacement

Over time, coolant tanks can become brittle, cracked, or clogged with sediment. Here are a few warning signs it's time for a new one: - Visible cracks or leaks in the tank. - Coolant loss with no external leaks from hoses or the radiator. - Warning lights or frequent overheating. - Discolored or contaminated coolant inside the reservoir. - A faulty or missing reservoir cap. Ignoring these signs can lead to cooling system failure, higher repair costs, and unnecessary downtime.