Cobb Subaru 15-21 WRX/STI Coolant Overflow Tank

If you're working on the cooling system for your 2015-2021 Subaru WRX or STI, replacing the coolant overflow tank is a common task, especially if the original is cracked or discolored. This tank from COBB is a well-built replacement designed to fit your car directly.

This overflow tank is constructed from a durable, clear plastic that lets you easily see the coolant level at a glance. Unlike the stock tank, which can become brittle and crack over time, this COBB unit is made to last. It includes a new cap and is designed to install using the factory mounting points, making the job straightforward. Having a clear view of your coolant level is important for monitoring your engine's temperature and preventing overheating.

When replacing your coolant overflow tank, it's a good time to inspect your hoses and radiator for any signs of leaks or wear. This COBB tank is a solid option for restoring the functionality and appearance of your Subaru's cooling system.