Bar’s Leaks Professional Fiber Block Seal Head Gasket and Cooling Sealant is one of the strongest antifreeze compatible repair on the market. High strength carbon fibers work like a rebar in concrete to stop larger leaks and create a truly permanent seal. One bottle treats cooling systems from 2.5 to 5 gallons. Use 1/2 bottle for systems of 1.5 to 2.49 gallons.
- Repairs blown head and intake gasket leaks
- Seals cracked cylinder heads and blocks
- Stops heater core and radiator leaks
- Fixes leaking freeze and core plugs