Bar's Products Inc.

Heavy Duty Radiator Stop Leak

Heavy Duty Radiator Stop Leak safely and effectively seals internal, external and coolant-to-oil leaks in plastic, aluminum and metal radiators, freeze plugs, gaskets, heads, blocks and heater cores.

  • Features Rhizex pellets that dissolve in minutes to seal leaks
  • Also conditions the cooling system, inhibiting rust and corrosion, lubricating water pump seals and helping to control electrolysis
  • Compatible with all brands of antifreeze
  • Suitable for gasoline or diesel engines

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