Rear Differential Breather Relocate - 2001 4runner - **PICTURES**

[ramonortiz55]

Today I relocated the rear differential breather. These parts were courtesy of @Unchained 5150 . Rick, you will always be a part of my 4runner build buddy.

The parts needed were:

Toyota parts:

Union part: 90404-51319

Breather: 90930-03136

One hose clamp

Teflon tape

about 6 feet of transmission hose. I went to autozone and asked them to provide some hose that fit the Toyota breather fittings. Took the fittings with me so they could give me their best fitting hose.

Here are the parts pictured:





Made sure to Teflon the threads on the union part. I fitted the parts into the hose to stretch it out and allow ease of installation once I was under the 4runner.



On the driver's side rear wheel well, I located the fuel filler neck dust cover. I removed the lower clip that holds the fuel filler neck dust cover:





Next I popped open the fuel gas door.
This allowed me to grab a knife and cut a small hole small enough in the rubber surround to hold the breather fitting but large enough to allow me to fish the hose thru.



I reached behind the fuel filler neck dust cover and pulled the hose thru



The hole I made in the rubber surround of the fueling port is tight enough to hold the hose in. I didn't clamp this end since the hose was a very tight fit. I had to dab the fitting with some light oil to get it in the hose.



I then fished the hose to follow the fuel lines and what not..



I then located the existing breather:



Removed it and installed the new union part. Make sure to Teflon!



I went ahead and attached the hose and clamped this end.



I allowed enough slack to make sure there is enough hose to reach during articulation by matching the length of my extended brake lines.

 

[the walrus]

Nicely done! Thanks for the pics. This one is on my to do list.

Justin

 

[MeglaJohn]

awesome mod. im guessing the barbed diff breather is for the front axle or did you just screw it into a hose fitting?

 

[TMP]

Nice! I recently did the mod too.

 

[ramonortiz55]

awesome mod. im guessing the barbed diff breather is for the front axle or did you just screw it into a hose fitting?

the fitting was barbed and I pressed it into the hose.

 

[kolelt]

If you have elocker. Don't forget to extend the elocker breather. It's very tiny. But it's a breather.

 

[weezykid]

Nice write up! I did this a couple weekends ago with the same parts. I reused my factory breather as I could still blow through it without issue. However I ran mine up the drivers side frame rail and up next to the brake booster.