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Liqui Moly Radiator Stop Leak

It’s not easy to find small leaks caused by stone chipping, porous soldered connections or hairline fractures in the cooling system on all water-cooled engines – the only clue is in the reduced coolant level. Radiator Sealant seals these types of leaks completely, easily and in an instant and safeguards the combustion chamber against damage caused by coolant ingress.


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For all coolant and heating systems with and without water filters. Also for aluminum and plastic radiators. 150 ml is sufficient for up to 7 l of coolant; 250 ml is sufficient for up to 10 l of coolant.

Weight 0.4 kg
Dimensions 5.4 × 5.4 × 16.1 cm