Dorman 603-222 Coolant Reservoir Overflow Tank

The Dorman 603-222 is a direct-fit coolant reservoir (also known as a coolant overflow tank or coolant expansion tank) designed to replace a cracked, leaking, or damaged original equipment reservoir. Engineered to match OEM specifications, this reservoir helps maintain proper coolant levels and system pressure, protecting your engine from overheating.

Key Features:

• Direct OEM replacement — no modifications required for installation
• Manufactured from durable, heat-resistant plastic engineered to withstand engine bay temperatures
• Precision-molded to match original fit, form, and function
• Includes mounting provisions and port locations matching the factory reservoir
• Helps prevent coolant loss and maintains proper cooling system pressure
• Dorman OE FIX design addresses common failure points found in original parts

Dorman Products is a leading supplier of automotive replacement parts, and the 603-222 coolant reservoir is built to meet or exceed original equipment standards. This part is ideal for restoring your vehicle's cooling system to proper working order and is a straightforward replacement for experienced DIYers and professional technicians alike.