The J-B Weld RadiatorWeld™ Radiator Repair Kit offers a reliable solution for repairing automotive radiators made of metal, plastic, or composite materials. Designed for both permanent and temporary fixes, this easy-to-use kit seals cracks up to 4 inches and holes up to 1/4 inch in diameter. Once fully cured, the repair is chemical-resistant and can handle temperatures up to 250°F, making it perfect for emergency or long-term radiator maintenance.
Ideal for automotive radiators and metal/plastic components
Repairs cracks up to 4″ and holes up to 1/4″ diameter
Heat resistant up to 250°F (121°C)
Chemical resistant after curing
Not recommended for polyethylene or polypropylene surfaces