ECU Tuner

The COBB Coolant Overflow Tank is designed to enhance the engine bay of your 2022-2026 Subaru WRX. It offers a clean and stylish alternative to the OEM plastic coolant overflow tank, which can be prone to cracking due to extreme heat from hard driving or harsh climates. Constructed from welded aluminum with internal and external anodizing, this 1.1L capacity tank provides increased volume over the stock unit. It features internally welded fill and vent tubes for leak-free construction. The fill tube extends to the bottom to prevent air ingestion, while the vent tube can be routed through the bottom of the car using the included silicone tubing. An integrated, red-anodized dipstick allows for easy coolant level checks. The main reservoir cap is injection-molded plastic, and a blue anodized billet cap is included for the windshield washer fluid filler neck. This coolant overflow tank is compatible with 2022-2026 Subaru WRX models, including CVT and MT transmissions, across various sub-models and regions (USDM, ADM).