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casting plugs

  1. F

    Cummins 6bt thermostat question

    I've noticed most of the replacement thermostats on the 4/6bt are not "hi-flow" and look like the 6.2/6.5 bypass type thermostats with a somewhat smaller opening for coolant flow. I run the "hi-flow" in my 6bt which looks like the thermostats on the dual thermostat 6.5td but with a bypass valve...
    • FellowTraveler
    • Thread
    • casting plugs cooling system core plugs freeze plugs hi-flow thermostats thermostats
    • Replies: 11
    • Forum: All Other Diesels
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