Kenworth t680 def?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by ColumbiaBoB, Oct 27, 2024.

  1. ColumbiaBoB

    ColumbiaBoB Light Load Member

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    May 3, 2011
    Des Moines, IA
    0
    Just bought my first DEF truck. Was changing DEF filter and found this thing just zip tied, not connected to either side not sure what it is.
     

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  3. Inderjit

    Inderjit Medium Load Member

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    681
    Sep 17, 2017
    0
    I believe it is a fuel tank vent.
     
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  4. Goodysnap

    Goodysnap Road Train Member

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    Jul 12, 2017
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    That is the DEF tank filter for the air vent. Keeps debris from the atmosphere from going in the tank and allows for air transfer from in and out of the tank.
     
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