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K & W - K&W METALLIC BLOCK SEAL 12/16OZ
  • Forms a permanent molecular bond that's as strong as steel.
  • Seals cracks ##&## holes in cost iron ##&## aluminum engine blocks, head gaskets, freeze plugs, ##&## copper, aluminum ##&## bi-material radiators ##&## heater cores. Tested by an Independent test lab.
  • Rated No. 1
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