The GrimmSpeed Titanium Radiator Cap elevates a proven cooling upgrade with a premium new finish designed for both performance and style. Building on the trusted 1.3 bar cap, this version features a stunning heat-treated titanium construction that shifts from blue to bronze, creating a unique burnt ombre effect that stands out in any engine bay. Beneath its refined exterior lies the same reliable engineering—rated at 1.3 bar (18.9 psi) to raise your coolant’s boiling point, maintain consistent system pressure, and prevent fluid loss during demanding heat cycles. The titanium material not only enhances strength and corrosion resistance but also provides a lightweight, durable solution for high-performance builds. Quick Specs Pressure Rating: 1.3 bar / 18.9 psi Finish: Burnt ombre titanium (blue-to-bronze gradient) Seal: Heavy-duty silicone gasket for consistent sealing Construction: Reinforced spring assembly for repeatable pressure retention Fitments & Compatibility Fits all Subaru radiators and/or expansion tanks using the standard small-type cap interface Also compatible with many Nissan, Mitsubishi, Honda, Mazda, and Toyota applications sharing the same small-type neck design Note: Does not replace the earless, 1-way STI radiator cap as this is a two-way cap — fits the upper expansion tank on those models
