Differential breather mod for 2017 and 2018’s?

Total Tacoma noob here. Why the breather mod? Good forum link or article why and advantages?

 

To prevent water from entering the rear diff. Moves the vent up higher, the front is already done from factory.....no idea why the back wasnt.

 

Interesting. with it up higher will h20 still enter if crossing river etc?

 

If you move it up high enough with a long tube then no prolly not. Alot put the union on and run a long vent tube up into the brake light housing.

 

ok. this vent common on all truck/makes?

 

Yeah i would think that all makes have some sort of vent system

 

A much easier way, if you didn't want to run hose up high, and have to mess with all of that, is to just add a few inches of 1/4 or 3/8" hose, depending on the size, and add this inline check valve. I use these all the time, also great for one man brake bleeding jobs. Allows flow only in one direction...

https://www.ebay.ca/ulk/itm/132408290658

 

t

that was my first thought when I read about the breather. Why doesn't it have a check valve to prevent h20 from entering? My only hesitation with a valve would be: what occurs to the diff if breather plugged?

 

Water comes in through the diff or axle seals

 

so the breather expels h20?

 

The only reason that rear differential has a valve or a breather for the only purpose is to keep it from building up too much pressure inside and not blowing the seals out. it has nothing to do with water coming in or out, it has nothing to do with anything other than relieving internal pressure, that's why the check valve is good because it will allow the pressure to release from the inside of the rear end housing and not let anything go back in.

 

Do we have an e-locker actuator vent on the 3rd gens to vent as well?

 

Get this part in metal, not plastic

 

take the guesswork out of it and just but the third gen diff breather from Yota Shop.
https://www.yotashop.com/toyota-of-...MIh8b0sOqa3QIVy7jACh0oqQt3EAQYASABEgIUkPD_BwE

 

$20!!!!!! Man, that's literally $3 worth of parts .

 

Just put this on my truck this morning. Ran it up to the rear tail light area.

 

Just did mine also.. Worth the $20! Thanks for the quick shipment from yotashop.

 

To each their own. Folks around here don’t hesitate to spend $50 on a 3D print coin holder from Meso so just providing the info for those interested lol

 

I’ve read through several of the threads about this and I still don’t understand why this is necessary. If it’s just to vent pressure, why does it need to be elevated? The vent is one way so I’m not getting the danger of water ingress. ELI5 anyone?

 

Sometime the OEM breather valves turn into a no way valve and stop working and blow seals, seriously look at the 2nd Gen forum there’s members that had this happen.

Aftermarket or ARB 2way open breathers are reloacated higher in the bed or near the brake light.