For Jeep Wrangler JL/JLU 18-24. For Jeep Wrangler 2.0L L4-Electric/Gas, 2.0L L4-Gas 18-24. 1 x Aluminium Black Front Engine Coolant Reservoir Tank. Function: When the coolant pressure in the radiator exceeds the pressure cap setting, the coolant flows to the outside through the reserved channel to prevent the water pipe from bursting, ensuring efficient cooling and smooth engine operation.
