Mishimoto Aluminum Coolant Expansion Tank for Subaru WRX/STI 50% Increased Ca...

Mishimoto Aluminum Coolant Expansion Tank for Subaru WRX/STI Upgrade reliability and style with the Mishimoto Aluminum Coolant Expansion Tank designed specifically for the Subaru WRX (2002–2007) and STI (2004–2016). Engineered to replace the factory plastic reservoir, this tank prevents common failure modes caused by long-term heat cycling. 50% increased capacity over the stock tank for improved coolant recovery and reduced overflow. Durable construction: TIG-welded aluminum body with barbed fittings for leak-resistant, long-lasting performance. Finish options: polished silver or anodized black to complement your engine bay and pair with Mishimoto Performance Aluminum Radiators. Direct fit: Designed for perfect fitment in the specified WRX and STI model years for simple installation. Mishimoto Lifetime Warranty: Backed for life to ensure confidence in materials and craftsmanship. This expansion tank not only enhances cooling system capacity and durability, it also delivers a clean, race-inspired look under the hood. Ideal for daily drivers and performance builds seeking a reliable, OEM-fit upgrade.