Mishimoto High-Pressure 1.3 Bar Radiator Cap - Small - One-Way

When you're pushing your Subaru hard, especially under demanding driving conditions, the cooling system can build up more pressure than a stock cap can handle. This Mishimoto High-Pressure Radiator Cap is designed to hold more pressure, keeping your coolant from boiling over and getting lost in the overflow reservoir. It's a direct replacement for your Subaru's original cap, making installation straightforward.

This cap is rated at 1.3 bar, which is about 19 psi. By holding more pressure, it raises the boiling point of your coolant, which means your engine can run cooler and more efficiently, even when you're working it hard. It's built with a one-way valve, just like the factory cap, so it operates correctly with your Subaru's cooling system. The unique sticker is designed to always face the right way, which is a small detail that makes installation a bit easier.