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Learn how to fix minor coolant leaks in your car with radiator stop leak, and prevent costly repairs with autozone. Normally, a car radiator tends to wear and tears with time leading to the development of leaks. Radiator stop leak and engine block stop leak products can often be used to seal small holes in cooling system components

Using these products is often as simple as pouring them into the radiator and running the engine A radiator stop leak is a product that you can use to seal the leaks on your car’s radiator Check out our selection of radiator and head gasket sealer options at o'reilly auto parts to simplify your repair.

Product description the permatex radiator repair flows through the heater core without restriction and plugs pinhole leaks reducing engine overheating and frequently adding coolant

Corrosion of cooling system components causes pinhole leaks and can lead to engine overheating and the need to frequently add coolant. It is specially formulated to seal larger leaks better than other stop leak products Works safely and effectively on plastic, aluminum and metal radiators, heater cores, blocks, heads, gaskets and freeze plugs.

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