Enhance your 2022-2024 Subaru BRZ or Toyota GR86 cooling system with the Koyo Aluminum Radiator Filler Neck. This premium upgrade replaces the fragile factory plastic filler neck with a robust, all-aluminum design built to last. Perfect for enthusiasts seeking a reliable and stylish under-hood component, it offers improved durability and a sleek mirror-polished finish that stands out.

Crafted with 100% TIG-welded construction, this filler neck is a true drop-in replacement requiring no modifications and installs in under five minutes. Note that it is not compatible with the OEM pressure cap; instead, it requires the Koyorad SK-C13 or a deep plunger equivalent cap. This part is engineered specifically for the 2022-2024 BRZ and GR86 models, ensuring perfect fitment and performance.

Ideal for Subaru and Toyota enthusiasts focused on quality cooling upgrades, the Koyo Aluminum Radiator Filler Neck delivers both function and style. Upgrade your ride today and experience the difference—shop now at Subimods for trusted Subaru performance parts.