Protect your car's AC system with these precision-engineered R134a valve caps. The 2-piece set includes both high and low pressure caps in a striking blue finish, designed specifically for automotive air conditioning charging ports. These caps create a reliable seal to refrigerant loss and keep debris out of your AC system. Built to withstand temperature fluctuations and daily wear, these replacement caps are a perfect match for R134a AC systems. Easy to install and remove, they provide essential protection for your vehicle's air conditioning service ports. The distinctive blue color helps quickly identify AC valve locations during maintenance. Keep your car's AC system properly sealed and functioning with these durable, purpose-built valve caps.