Help me identify this vacuum(?) tubing...

[ralfk]

One of them is cracked pretty bad but they all look like they're on the last leg. pictures taken below the fuse box. i did a pretty crap job tracing the tubes but it looks like they go to the front diff.

Does anyone know what replacement part number would be?
Are they hard to replace?
Can they be replaced with some alternate tubing sold by the foot? (they seem fairly rigid)
Is there a system diagram showing the connections?

Before i get a smart ass answer such as "just remove it and take it to auto parts store" hear me out...this is my DD and these tubes are so brittle that if i touch them they'll crumble to a million pieces. I do not want to take them off until i have a replacement that I know will fit.

Thanks all for the help!

 

[spartacus]

here is an option if you want to go after market route.
http://www.toyota-4runner.org/3rd-gen-t4rs/201483-silicone-hose.html

 

[rkntoy]

Year of rig helps. Assuming you have a vacuum actuated ADD.

 

[rkntoy]

https://parts.sunrisetoyota.com/a/T...813/VACUUM-PIPING/674450-1708.html#9099992007

 

[ralfk]

Year of rig helps. Assuming you have a vacuum actuated ADD.

Sorry, yes that would be useful. It's an '01 SR5 4wd

 

[ralfk]

here is an option if you want to go after market route.
http://www.toyota-4runner.org/3rd-gen-t4rs/201483-silicone-hose.html

I'm all for silicone but I don't think this is the right application. This area is pretty close to the oil filter and it constantly gets oil spilled during oil changes. Also, the silicone tubes tend to be a bit more flexible which can pinch and block flow.

 

[firemanj92]

I'm all for silicone but I don't think this is the right application. This area is pretty close to the oil filter and it constantly gets oil spilled during oil changes. Also, the silicone tubes tend to be a bit more flexible which can pinch and block flow.

I and several others have used the silicone set from this company over several years. I've used them both our T4Rs and our newer FJ without issues.

 

[phattyduck]

Sorry, yes that would be useful. It's an '01 SR5 4wd

No vacuum for your front diff. Those look like Evap hoses. I don't know the sizes though...

You can look up part numbers if you want to go OEM, but that might get expensive. www.toyodiy.com

-Charlie

 

[rkntoy]

No vacuum for your front diff. Those look like Evap hoses. I don't know the sizes though...

You can look up part numbers if you want to go OEM, but that might get expensive. www.toyodiy.com

-Charlie

Yup. You should be an electric ADD.

 

[Toyotayoda]

If we are looking that first pic for an answer, those are steel lines going to the tank, the nylon sheathing is cracking some. Those would be a real PITA to replace, and silicone wouldn't suffice. I don't know what the rest of your rig looks like but judging by the condition of that section I would say they are still solid, no need to do anything.