Leaking upper oil cooler 2000 k3500 7.4l

[ChevroletTough]

 

Hey guys. Found my leak. This is the upper oil cooler line hose. This collared o ring is the problem. Ever seen one?  This is on my 2000 K3500 7.4L

 

 

 

Can’t seem to find one. Found an o ring that appears to be similar size hope that fixes my issue. Otherwise I’ll end up buying a new $17 cooler line.

 

 

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Edited September 17, 2020 by ChevroletTough

[ChevroletTough]

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[ChevroletTough]

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[ChevroletTough]

This is what I ordered. The ID appears to be close to what mine currently is


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[ChevroletTough]

The line measurement


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[ChevroletTough]

Replaced the o ring and it’s worse now. Going to test more but I might need a new radiator actually.


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[ChevroletTough]

Upon further inspection:

 

It's not the o ring leaking.  It's leaking coolant and not oil. The radiator is cracked. I ended up ordering a radiator last week. Shows up today. Going to swap it out. (bottom oil cooler line is going to be a PITA to reach).

[ChevroletTough]

Got it swapped out. No more leaks.


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[ChevroletTough]

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[ChevroletTough]

p.s. i cleaned the bottom of the radiator tray.

[ChevroletTough]

Topped off the radiator and overflow (1/2 gallon). Had to get more and mix it.

Going strong!


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[txab]