Shield Radiator Stop Leak Is The Ultimate Solution For Safely Sealing Radiator Leaks And Preventing Coolant Loss. This 350 Ml Solution Is Specially Formulated To Fix Leaks In Your Cars Radiator; Heater Core; And Water Pump Gaskets. By Using Shield Radiator Stop Leak; You Can Avoid Costly Repairs; Maintain Proper Coolant Levels; And Ensure Your Engine Stays Cool And Protected. Stops And Prevents Minor Leaks In The Radiator & Cooling System. Safe For Rubber Hoses; Seals & All Metals In The Cooling System.