K&W Metallic Block Seal 16oz
1.- Cooling System
Forms a permanent molecular bond that's as strong as steel. Seals cracks and holes in cast iron and aluminum engine blocks, head gaskets, freeze plugs, and copper, aluminum and bi-material radiators and heater cores.
- Extends the life of your vehicle
- Rated no. 1, tested by an independent test lab
- Repairs gaskets
- Seals cracks
- Stops leaks