The Type-A radiator cap is commonly used in 2015 - 2021 Subaru STI and WRX models. It's a must - have for an upgraded cooling system. Radium's cap is engineered to boost cooling efficiency safely by controlling the boiling temperature. Higher radiator pressure raises the coolant's boiling point, giving you extra safety and preventing air pocket cavitation at the water pump. Specs include a 1.3 BAR (18.9 psi) rating, a steel cap with an electroplated black finish, premium silicone sealing elements for long - lasting durability, and it's designed only for mini - size (32mm ID) radiator necks. Note that this item isn't application - specific, so check compatibility before buying.
Using this radiator cap is easy. Just remove the old cap from your radiator neck and replace it with this one. Make sure it's properly seated for a good seal. Before purchasing, always check if it fits your vehicle model. As for maintenance, occasionally inspect the cap for any signs of wear on the silicone sealing elements. If you notice any damage, it's time to replace the cap. Keep it clean to ensure its optimal performance.
