Permatex’s Radiator Stop Leak is designed to provide automotive users with a reliable and cost-effective solution for fixing leaks in their vehicle's radiator system. This premium product is formulated with advanced chemistry that protects against coolant loss by stopping most leaks from the radiator, heater core, and engine block core expansion plugs, as well as seepage from the head gasket. Permatex’s Radiator Stop Leak is easy to use and does not require any special tools or equipment, making it a great option for drivers who want to quickly and easily fix radiator leaks on their own. With Permatex Radiator Stop Leak, drivers can enjoy peace of mind knowing that their engine is protected, and their vehicle is running smoothly.