We’re proud to introduce the GrimmSpeed High Pressure 1.3 Bar Radiator Cap—a simple, effective, and affordable upgrade for Subaru enthusiasts and beyond. This cap not only enhances engine cooling efficiency for track and performance-driven applications but also improves under-hood aesthetics by eliminating the standard, unattractive OEM cap.
With its high-quality construction and reliable performance, this product is a perfect addition to your lineup, appealing to both daily drivers and weekend warriors.
- Pressure Rating: 1.3 Bar / 18.9 PSI – Raises the boiling point to prevent overheating and coolant overflow.
- Optimized Cooling Performance: Keeps fluids where they belong, even during hard driving or track sessions.
- Premium Build Quality: Electro-coated stamped steel construction with BUNA-N rubber for durability.
- Aesthetic Upgrade: Eliminates the factory yellow badge, providing a clean, understated look under the hood.
- Economical Upgrade: Affordable and easy solution for customers using antifreeze/water blends or distilled water for superior heat dissipation.
GrimmSpeed Limited Warranty
