Koyorad Type B BLUE Label Radiator Cap - Shallow Plunger temp sensor The Street Series AOS protects

The Street Series AOS protects from both oil entrainment in the intake flow and oil dilution in the engine’s lubrication system far better than the OEM PCV system alone

or Ethanol

89″ core boosts the cooling system’s heat capacity and endurance

Perfect for the every day with any outfit

Koyorad Type B BLUE Label Radiator Cap - Shallow Plunger temp sensor The Street Series AOS protectsExtract every ounce of cooling efficiency from Koyorad. All Aluminum Performance Radiators with a genuine Koyorad Hyper Cap! This Koyorad Hyper Cap withstands an increased valve pressure rating of 1. 3kgf cm2 (1. 3 bar) (18. 9 psi) (130 kPa) Increases the boiling point of water and relieves high performance engines of excessive heat. This design is made specifically for the BRZ, FRS and GT86 factory radiator fill neck.