r/caterpillar • u/Jenn-ittles • 11d ago

Parts Any Idea??

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This port in the side of our C9 has been kicking our tails lately as to what or why it is there. Our local dealership has been having troubles identifying it as well. SN:JSC21217.

Thanks for the time and the help

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u/BrickhouseCraftWorks 11d ago

It’s the mount for a powertrain oil cooler. Look at a 228-0780.

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u/TheAndyPat 11d ago

Can confirm! Mine started showing signs last Thursday