I noticed some pretty serious corrosion on these lines and I would like to know what these lines are called so I can order some new ones. I would like to fix these before any problems happen (already got stranded on the road due to the #4 injector line failing). Also how hard is it to replace these lines?
Thanks all,
Eric
P.S. all that fluid is from just getting transmission cooler lines replaced.
Also sorry I got a little carried away with the arrow function in MS Paint...

 

I don't have a parts manual for an 05, but those appear to be the line from the fuel filter to the CP3 and then the return line from the CP3.


Neither are high pressure at all, and I think you will be long past driving age before they become a problem.

Your call, but those won't die like the #4 Injector line......

 

PatDaly is correct, those are the low pressure feed and return lines for the CP3.

The high pressure CP3 output line is also in your pictures.

The lines do look very corroded at the fuel filter canister and I would be removing, cleaning and examining them.


For the Cp3 input line, I would toss the stock one and look into a fuel filter kit that replaces that line and adds an additional fuel filter that mounts to the engine.

Glacier diesel makes a super nice kit. I've had one on my truck for 10 years.

Glacier Diesel Power.com

 

Thanks you all for the help, I will look into that secondary filter kit. Was it a pretty easy install?