Engineered for Australian operating conditions, this Tridon Radiator Cap suits BMW 3 Series and BMW X3 models built from 2016 to 2025. Opening temperature is 85 degrees Celsius, matching the engine management calibration. The Steel construction resists coolant additives, heat cycling and pressure fatigue. Pressure rating is 100kPa; running the wrong rating will either boil the coolant or stress the radiator seams. Replace the cap, thermostat and hoses together on high-kilometre vehicles - they are cheap compared with a head gasket. Fitting is a straightforward workshop job and no coding or calibration is needed. We recommend fitting by a qualified technician and following the manufacturer's torque specifications. Check the fitment list against your build date and VIN before ordering, as running changes were made mid-generation. Packaging and labelling include the part number and application data for easy stock control. Every unit is supplied new with a 24 Months warranty against manufacturing defect.