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    Duramax lower radiator hose o-ring

    4-2-2016 - If you buy the O-ring (9396K88) from Masters-Carr and coat the Mishimoto aluminum lower outlet and O-ring with Hylomar Universal Blue I guarantee it will not leak. I've tried the so called silicone lubricant sealers and after time it starts leaking again. Amazon is the cheapest...
  2. C

    Duramax lower radiator hose o-ring

    I don't know if this page is still visited, but the leak is still active (especially if you've purchased a Mishimoto radiator). Mishimoto sent me what should have been a larger diameter O-ring, but it was the same as the OEM lower hose I purchased on internet. I went to Masters-Carr and spent...
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