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ChevroletTough

Leaking upper oil cooler 2000 k3500 7.4l

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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 7.4L25c93ebb4fcda180fec2cd07a804d1c5.jpg

 

 

 

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 by ChevroletTough

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This is what I ordered. The ID appears to be close to what mine currently is 7d3d7d432475c43593ae4a32e1c38651.jpg


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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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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).

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