K&W 401016 Permanent Metallic Block Seal, 16 oz

Forms a permanent molecular bond that's as strong as steel. Seals cracks & holes in cast iron & aluminum engine blocks, head gaskets, freeze plugs, & copper, aluminum & bi-material radiators & heater cores. Tested by an Independent test lab.

K&W Metallic Block Sealer - 16 oz.

Permanent molecular seal that's as strong as steel Seals cracks & holes in cast iron and aluminum engine blocks, head gaskets, freeze plugs, and

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