Boomba Racing Aluminum Coolant Overflow Reservoir Cap Natural Finish 2002-2024 WRX / 2004-2021 STI

Enhance your Subaru WRX or WRX STI engine bay with the Boomba Racing Aluminum Coolant Overflow Reservoir Cap in a sleek natural finish. This premium replacement cap offers a stylish upgrade over the OEM yellow plastic unit, improving both appearance and durability. Designed specifically for 2002-2024 WRX and 2004-2021 WRX STI models, it’s the perfect way to add a subtle yet impactful touch to your cooling system.

Crafted 100% in-house in the USA, this Boomba Racing cap ensures high-quality construction and a precise fit. Installation is simple—just remove the factory cap and replace it with this attractive aluminum piece. Its natural finish complements the engine bay while providing long-lasting resistance to heat and wear.

Ideal for Subaru enthusiasts looking to maintain or upgrade their cooling system with a reliable, stylish part. Whether you’re a daily driver or performance-focused, this reservoir cap is a smart, practical addition. Shop now at Subimods to enhance your Subaru’s engine bay with quality aftermarket parts.