Grimmspeed High Pressure 1.3 Bar Radiator Cap - Fits All Subarus

QUICK SPECS:

• 1.3 Bar/18.9 PSI Pressure Rated
• Increases Cooling System Efficiency
• Electro-coated Stamped Steel Construction
• Heavy-Duty Silicone Seal
• Understated Look Eliminates Ugly OEM Yellow Badge
• Manufactured in Japan

 

It is well understood that increasing the pressure in your cooling system has a direct correlation to cooling performance. The factory 1.1 Bar (16 PSI) cap is adequate for daily driving with a system full of antifreeze, but those looking to push their Subaru harder or run on the track may want to run an anti-freeze/water blend (or, in many cases, straight distilled water) as it provides better heat transfer and dissipation than standard coolant or antifreeze. The disadvantage of running water or a blend of antifreeze/water is that it has a lower boiling point and thus quickly fills (and in some cases overflows) your expansion tank.

Upgrading the radiator cap to one with a higher pressure rating is the simplest (and by far the most cost-effective) way to solve this problem and keep your preferred cooling fluid where it belongs - in your engine and radiator. The GrimmSpeed High Pressure 1.3 Bar Radiator Cap is a high quality and cost-effective way to maximize your cooling system's potential and improve the looks under your hood!

 

FITMENTS:

• All Subaru Radiators and/or Expansion Tanks
• Many (but not all) Nissan, Mitsubishi, Honda, Mazda, and Toyota Models

*fitment note - not suited to replace the 1-way "earless" cap on the STI radiators, but will work perfectly on the upper expansion tank!