Many people replace their plastic radiator tanks due to small cracks or pinholes, but repairs are possible. Radiator repairs must withstand high operating temperatures and contain hot, pressurized coolant. Adhesives are ineffective in these conditions, as they cannot maintain a strong bond over time under heat and pressure.

The only reliable method for repairing a plastic radiator tank is fusion welding. Using Polyvance’s airless plastic welder and nylon welding rod ensures a seamless, durable repair that lasts. Polyvance is so confident in this process that we drilled a hole into a perfectly functional radiator to demonstrate its effectiveness.