Item List: 1 Set Coolant Radiator Reservoir Bottle; OE Number:17138610652
Appropriate for: The radiator surge tank fits for BMW 330i G20 2017-2019 L4 2.0L Petrol, for BMW 330i xDrive G20 2017 L4 2.0L Petrol, for BMW 330i xDrive G20 2019 L4 2.0L Petrol, for BMW Z4 G29 2019 L6 3.0L Petrol
Function: The cooling tank will dissipate heat through the radiator to ensure that the engine operating temperature stay within normal range. Stores excess coolant fluid until required, avoid loss of lubrication, overheating and metal corrosion, reduce your engine's fuel consumption and cylinder bore wear.
Installation Instructions: 1. Turn off and cool down the car, remove the bolts and the reservoir. 2. Allow the remaining coolant to flow back into the drain pan. 3. Replace the new reservoir tank and reinstall the coolant hose to the radiator and tighten the clamp. 4. Finally check if function well.
Please Notice: Replace the coolant radiator reservoir tank to keep your engine at the right temperature under a variety of conditions and improve efficiency of heating system.