JB Radiator Stop-Leak 10oz

Stops leaks in radiators, head gaskets, blocks, soft plugs, valve ports & heaters while you drive. Will not clog cooling system & harmless to all cooling system parts. Mixes with all types of anti-freeze & coolants. 

• Will not clog cooling system
• Mixes with all types of antifreeze
• Holds under pressure (up to 25lbs.)
• Stops leaks in radiators, head gaskets, blocks, soft plugs, valve ports and heaters