Seal hairline cracks and small leaks in your vehicle’s cooling system with ease using Gold Eagle Alumaseal Radiator Stop Leak Powder (20g). This powerful, easy-to-use formula quickly and securely seals minor gaps and leaks in your radiator, cylinder head, and engine block—helping you avoid costly repairs down the road.
- Compatible with all types of coolant, including antifreeze blends—suitable for any vehicle.
- Special aluminum powder formula delivers a long-lasting seal without causing buildups or sediment.
- Helps prevent internal corrosion and provides added lubrication to the water pump, extending engine life.
Simple to use—no special tools or technical skills required. Just remove the radiator cap, pour the entire contents into the radiator, top up coolant if needed, replace the cap, start the engine, and drive for a short period to distribute the sealant throughout the system.
Safe for all metal, plastic, and rubber components. Only targets cracks and leaks, so you never have to worry about clogging or restricted coolant flow. Especially ideal for modern cooling systems where debris and deposits can cause serious issues.
Regular maintenance and timely repair of minor leaks are essential for your vehicle’s longevity and trouble-free operation. With Alumaseal Stop Leak Powder, you can quickly and easily fix small cracks, ensuring optimal cooling system performance and engine temperature control.
