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    • Block Heater – QSB 230 5.9

      This topic has 2 replies, has 2 voices, and was last updated bycarrata 5 years ago

      December 10, 2018 at 1:34 pm Hi! Looking for some advice from the experts: I want to install an immersion style block heater to my QSB 230 5.9L (SN 46930753). On my boat, the cabin heat exchange seems to be plumbed to the Block Heater port. My assumption is that red circles should be heat exchange and yellow block heater? What is blue for?? This article confuses me a bit: https://www.sbmar.com/articles/heater-hookup-ports-for-your-b-c-series-cummins/ I think this article…

      Started by: carrata in: Cummins Marine Engines

      2 Replies
      December 10, 2018 at 2:17 pm Thanks Philip, good suggestion. I will go with the pad. Next question is whether or not I should bother re-porting the heater hose. Any benefit, or leave it alone?

      Last Post by: carrata posted: 5 years ago

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