Radiator cap for selected Daihatsu, Honda, Mazda, Mitsubishi, Nissan, Subaru, Suzuki and Toyota vehicles listed in the fitment table. NBR NRC101B is designed to maintain stable cooling system pressure at 1.1 kg/cm2 / 108 kPa. The cap helps prevent coolant boiling, supports proper coolant circulation and protects the cooling system from pressure loss. Made from heat-resistant materials and manufactured to OEM-style dimensions for direct replacement without modification.