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STP Rad Stop Leak - 325ml

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Easy to use motorcycle radiator sealant that will help you get back on the road.


STP Radiator Stop Leak is a radiator sealant for cars and motorcycles. It contains a chemical that forms a coating over small holes when it is applied to the walls of a radiator. It will stop your motorcycle radiator from leaking so you can get to a garage and have it properly repaired. It is very easy to use so keep a bottle under your seat or in a pannier and save yourself the long walk home.

Manufacturers Specs

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Brand A1
Category Degreasers
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