Keep your engine running at the right temperature with genuine Delphi Coolant Concentrate, 1 litre pack. Formulated to prevent corrosion, resist boiling, and protect against freezing, this coolant is suitable for both petrol and diesel engines. Mix as per your vehicle manufacturer's recommended dilution ratio for best results. Backed by Delphi's trusted engineering, it helps extend radiator and water pump life while keeping your cooling system running smoothly. Ideal for routine top-ups, radiator flushes, and full coolant replacements.