Ot fuel line size

Nick167 · Mar 27, 2017

I have a 2001 k2500 chevy long bed extended cab with the duramax the question is that there is two fuel lines on the inside of the frame on the drivers size does anyone know what size this is? The bigger one is rotting out and I need to get a piece to repair and don't know what size it is thank you

Pete in MD · Mar 27, 2017

Try some open end wrenches until you find the size that just fits over the line.

ChrisQ · Mar 28, 2017

The big one is 1/2", small one is 3/8". They can be bought new from GM. They come in a very big box. If you try to unscrew the line from the fuel cooler, the fitting will probably break.

showcrop · Mar 28, 2017

Part of my PMs on my truck and car is squirting a little oil on all of the steel lines.

Nick167 · Mar 28, 2017

Thanks everyone I did go to the gm dealer but they wanted over 500 for all 3 and said that's the only way they could get them

Ot fuel line size

Nick167

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Pete in MD

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ChrisQ

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showcrop

Well-known Member

Nick167

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