Prestone AS145 Stop Leak Repair for Radiators, Heater Cores, and Hoses, 11 oz., 1 Pack Description Prestone Radiator Stop Leak features a patented formula that quickly stops leaks in radiators, water pumps, and heater cores while also protecting against pitting and corrosion. Prestone Radiator Stop Leak takes sealing performance to a higher level by both stopping the leak as well as the corrosive condition that causes leaks in the first place. Its unique combination of natural and synthetic components provides the ability to seal leaks up to 0.020-inches x 0.5-inches. What makes this possible is the size, strength, and durability afforded by fibrous particles, the same materials in bulletproof vests. Prestone Radiator Stop Leak particles have been chosen to seal even large leaks without interfering with the flow through the radiator and heater core tubes. It also boosts corrosion inhibitors to protect against pitting and corrosion, which cause radiator leaks. Features: Patented formula quickly stops leaks in radiators, water pumps, and heater cores Boosts corrosion inhibitors to protect against pitting and corrosion, which cause radiator leaks Combination of natural and synthetic components provides the ability to seal leaks up to 0.020" x 0.5" Seals even large leaks without interfering with the flow through the radiator or heater core Stops the leak as well as the corrosive condition that causes it Product Details: Brand: Prestone Style: Pumps Item Weight: 0.8 Pounds Item Dimensions LxWxH: 1.91 x 3.04 x 5.64 inches Water Resistance Level: Waterproof Brand: ‎Prestone Style: ‎Pumps Item Weight: ‎0.8 Pounds Item Dimensions LxWxH: ‎1.91 x 3.04 x 5.64 inches Water Resistance Level: ‎Waterproof Item Form: ‎Liquid Manufacturer: ‎Prestone Model: ‎AS145 Item Weight: ‎12.8 ounces Product Dimensions: ‎1.91 x 3.04 x 5.64 inches Item model number: ‎AS145 Is Discontinued By Manufacturer: ‎No Manufacturer Part Number: ‎AS145 Date First Available: February 1, 2013