1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

DIY: Rear Differential Breather Mod

Discussion in '2nd Gen Tundras (2007-2013)' started by csuviper, May 25, 2016.

  1. May 25, 2016 at 9:51 AM
    #1
    csuviper

    csuviper [OP] Moderator Staff Member

    Joined:
    Jan 6, 2014
    Member:
    #38
    Messages:
    8,743
    Gender:
    Male
    First Name:
    Brian
    Broomfield, CO
    Vehicle:
    2012 Rock Warrior 5.7L 4X4
    Some Mods :) See build thread for details
    Tools needed:
    • 14mm wrench
    • Torx bit - T30
    • Dykes (diagonal cutting plyers)
    • Philips screwdriver
    • Drill

    Required parts:
    • Union: Amazon link. Can also get from the dealer. Part # 90404-51319 ~$12
    • ~6ft of 5/16" or 3/8" hose from local auto parts store (transmission oil cooler hose, fuel hose, pressure tube, etc)
    • 2 Hose Clamps
    • Zip Ties
    Optional parts:
    • New breather Part # 90930-03136

    Instructions
    1. Drop down and remove the spare tire.
    2. Remove the stock breather with 14mm wrench.
    3. Install union. Can add teflon tape if desired.
    4. Push new hose onto the union.
    5. Add hose clamp at union.
    6. Run the hose up to the bed following the brake lines.
    7. Zip tie the hose to the brake lines and frame as desired. Remember to leave enough extra for when the suspension droops down.
    8. Route the hose to desired location for the breather. Some has placed them in the gas cap compartment or bed. If needed you will have to drill a hole to feed the hose into these locations.
    9. Install breather and hose clamp in desired location. Secure as needed.



    Before pic of the breather:


    After the union and hose are installed:


    Here is the union and breather parts from the dealer (not my pic):


    Here is the hose i got:


    Comparison of the breather and the union:
     
    Last edited: Oct 9, 2016
  2. May 25, 2016 at 10:00 AM
    #2
    dcsleeper408

    dcsleeper408 15' Tundra Pro

    Joined:
    Nov 10, 2015
    Member:
    #2081
    Messages:
    361
    Gender:
    Male
    First Name:
    mark
    San Jose CA
    Vehicle:
    2015 TRD PRO
    So here is a quick little write up for the diff breather mod.
    -Diff is hot, when you cross cool water it will vacuum that mud/water into your diff=costly repair. great $20 insurance plan.-

    I used 5/16 fuel line 12ft ish depending on how you decide to route.
    2 hose clamps
    teflon tape
    bunch of zip ties
    Cutters,pliers, star socket for the tails(forgot what size)

    [​IMG]
    i used part # 90930-03136 and part # 90404-51319

    First remove your tail light/disconnect all the plugs and put aside(2 star screws+pins that you need to pull away from to remove). Look down inside and see where you would route the line. Look towards the top of the bed and see where you would like to mount the new breather on. Make sure breather is pointed upward(highest point possible.)

    [​IMG]

    This is the new adapter and old breather
    [​IMG]

    New adapter mounted(teflon tape the threads)
    [​IMG]

    fuel line connected to new adapter,clamp and be sure to leave a good amount of slack for Flex.
    [​IMG]


    I ran the line above the frame zip tied green so I can easily distinguish the breather line. then went along the frame up into the taillight section.
    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
    Then mount the new breather in clamp it ,clip all the excess fuel line, zip ties, and put everything back together.
    Really easy mod. I seen countless threads where ppl run clear fuel filter through. you can if you want to. I honestly don't see the point unless you want to see if you would get any "blow back"?
    But I opted to this simple.. just like our front breathers.

    here is a video of my taco running through a small river. I didn't have the diff breather on at the time on the taco, drained the fluid. and luckily no water mixed in.. but now breather is in the taco and tundra for peace of mind just in case situations like this occurs again.

    https://www.youtube.com/watch?v=CoUQUh1p--0
     
  3. May 25, 2016 at 10:10 AM
    #3
    csuviper

    csuviper [OP] Moderator Staff Member

    Joined:
    Jan 6, 2014
    Member:
    #38
    Messages:
    8,743
    Gender:
    Male
    First Name:
    Brian
    Broomfield, CO
    Vehicle:
    2012 Rock Warrior 5.7L 4X4
    Some Mods :) See build thread for details
    Copied here: https://www.tundras.com/threads/diy-rear-differential-breather-mod.5253/

    If i would have known you already had it written up or where going to then i would have let you create the DIY, not me.
     
    dcsleeper408 likes this.
  4. May 25, 2016 at 10:28 AM
    #4
    dcsleeper408

    dcsleeper408 15' Tundra Pro

    Joined:
    Nov 10, 2015
    Member:
    #2081
    Messages:
    361
    Gender:
    Male
    First Name:
    mark
    San Jose CA
    Vehicle:
    2015 TRD PRO
    hah all good. your pictures are better.
     
  5. May 26, 2016 at 11:53 AM
    #5
    riksidney

    riksidney New Member

    Joined:
    May 26, 2016
    Member:
    #3453
    Messages:
    1
    Gender:
    Male
    First Name:
    Erik
    Vehicle:
    2016 Toyota Tundra TRD Pro Quicksand
    Can you use the original breather at the high-side of the hose in the taillight bezel? Or do you need part #90930-03136?
     
    dcsleeper408 likes this.
  6. May 26, 2016 at 12:12 PM
    #6
    csuviper

    csuviper [OP] Moderator Staff Member

    Joined:
    Jan 6, 2014
    Member:
    #38
    Messages:
    8,743
    Gender:
    Male
    First Name:
    Brian
    Broomfield, CO
    Vehicle:
    2012 Rock Warrior 5.7L 4X4
    Some Mods :) See build thread for details
    I am reusing the existing one. It fits in the hose just fine.
     
    dcsleeper408 likes this.
  7. May 26, 2016 at 1:58 PM
    #7
    Spvrtan

    Spvrtan New Member

    Joined:
    Apr 2, 2015
    Member:
    #1140
    Messages:
    263
    ..I forgot but does our front need a breather, too?
     
    dcsleeper408 likes this.
  8. May 26, 2016 at 2:01 PM
    #8
    csuviper

    csuviper [OP] Moderator Staff Member

    Joined:
    Jan 6, 2014
    Member:
    #38
    Messages:
    8,743
    Gender:
    Male
    First Name:
    Brian
    Broomfield, CO
    Vehicle:
    2012 Rock Warrior 5.7L 4X4
    Some Mods :) See build thread for details
    MotoTundra and dcsleeper408 like this.
  9. May 26, 2016 at 5:53 PM
    #9
    15whtrd

    15whtrd New Member

    Joined:
    Sep 20, 2015
    Member:
    #1829
    Messages:
    195
    Gender:
    Male
    First Name:
    Sean
    SoCal
    Vehicle:
    2015 Tundra DC SR5 TRD 4x4 5.7L Gas
    20% ceramic tinted windows, charcoal filter delete, weather tech floor mats, rear seat fold down mod, Tyger soft tonneau cover, Linex with uv protection, TRD swaybar, TRD center caps, TRD Pro grille insert, Real truck tailgate seal, Pop-n-lock tailgate actuator. Lots of love.
    Next on the to do list!
     
  10. May 26, 2016 at 7:00 PM
    #10
    IndyRedTRD

    IndyRedTRD New Member

    Joined:
    Jun 22, 2015
    Member:
    #1444
    Messages:
    85
    Gender:
    Male
    First Name:
    Ronnie
    Indianapolis, IN
    Vehicle:
    2015 Radiant Red SR5 CM TRD
    Toytec level, 33" KO2, TRD Exhaust, Nfab
    Ordered the union today. Thanks for posting this.
     
    dcsleeper408 likes this.
  11. May 26, 2016 at 7:07 PM
    #11
    CaptTyler

    CaptTyler www.fishcharlotteharbor.com

    Joined:
    Jul 23, 2015
    Member:
    #1561
    Messages:
    1,026
    Gender:
    Male
    First Name:
    Tyler
    Florida
    Vehicle:
    2012 MGM Crewmax
    Bilstein 5100's F&R +2 CB Shims CB +2 Shackles 295-65-20 Toyo AT2 BAMuffler 7" Spidertrax 1.25" G-Tek SABM / aFe Pro Dry S (Charcoal Delete) Husky X-ACT Floor Mats All LED Interior / Reverse Lights / Cargo Lights Philips Xtreme Vision Headlights
    Ya I love little mods like this. I'm going to make this my weekend project.
     
    dcsleeper408 and csuviper like this.
  12. May 26, 2016 at 7:14 PM
    #12
    driverdog

    driverdog New Member

    Joined:
    Mar 19, 2016
    Member:
    #2956
    Messages:
    620
    Gender:
    Male
    First Name:
    Jim
    Virginia Beach
    Vehicle:
    2015 Inferno pro
    Nerf step bars spray in bed liners window tint integrated brake controller
    Good info and pictures by both! I'll be doing this because of the flooding that occurs locally and the likelihood of driving in deep water. I was not aware of the issue or easy work around before this thread.

    Thanks!
     
    MannyFresh and dcsleeper408 like this.
  13. May 27, 2016 at 8:18 AM
    #13
    dcsleeper408

    dcsleeper408 15' Tundra Pro

    Joined:
    Nov 10, 2015
    Member:
    #2081
    Messages:
    361
    Gender:
    Male
    First Name:
    mark
    San Jose CA
    Vehicle:
    2015 TRD PRO
    20 minute job! 30 minutes with a couple cold ones.
     
  14. May 27, 2016 at 11:39 AM
    #14
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    630
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
  15. Jun 21, 2016 at 9:02 PM
    #15
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    630
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    Just ordered up the parts!
     
  16. Jun 22, 2016 at 6:05 AM
    #16
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    Wish I had read your post before getting my parts and installing. I think the TRD red would have looked sharp with my Radiant Red truck. Oh well, if I ever need to replace the hose I'll get the red. What color did you go with?
     
  17. Jun 22, 2016 at 2:16 PM
    #17
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    630
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    I went red to match my TRD sway bar
     
    MotoTundra and RowdyRon like this.
  18. Jun 25, 2016 at 10:41 AM
    #18
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    630
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    Pretty good match to my sway bar. I'm just waiting for the rest of the stuff to come in.

    breather tube.jpg
     
  19. Jun 25, 2016 at 12:52 PM
    #19
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    Now that's going to look sharp, Shane!
     
  20. Jun 30, 2016 at 8:25 AM
    #20
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    630
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    Union still hasn't arrived :(
     
  21. Jun 30, 2016 at 9:05 AM
    #21
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    Where did you order it from?
     
  22. Jul 1, 2016 at 12:05 AM
    #22
    Tracker

    Tracker New Member

    Joined:
    Jan 11, 2016
    Member:
    #2424
    Messages:
    630
    Gender:
    Male
    First Name:
    Shane
    Colorado, Denver Burbs
    Vehicle:
    2016 Silver Tundra SR5 Lifted
    Pro Comp Lift, towing mirrors, Fuel rims, Toyo A/T, Nav, Viper remote start
    The Amazon link above
     
  23. Jul 1, 2016 at 12:21 PM
    #23
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    Dang! Hopefully you have your part by now. I ordered from Amazon as well and it took about a week for me.
     
  24. Jul 14, 2016 at 9:51 AM
    #24
    WarEagleSteve

    WarEagleSteve Getting out of Jersey!

    Joined:
    Aug 4, 2015
    Member:
    #1615
    Messages:
    946
    Gender:
    Male
    First Name:
    Steve
    N.J.
    Vehicle:
    2015 White Tundra Crew Max SR5/Off Road
    Any opinions on using a wire loom protector? The hard plastic one that has ribs around it....
     
  25. Jul 14, 2016 at 10:19 AM
    #25
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    I don't see what using one could hurt. I normally only use that stuff for wiring projects, but, what the heck. Are you concerned about something coming into contact with the rubber hose and damaging it?
     
  26. Jul 14, 2016 at 10:24 AM
    #26
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    Hey, Steve. I thought about this some more and using some loom protector may not be a bad idea particularly where you route the breather hose up along the frame and to the tail light area. May prevent abrasion at those locations.... Just when I thought you were asleep, you come up with something!
     
    WarEagleSteve likes this.
  27. Jul 14, 2016 at 10:26 AM
    #27
    bandit

    bandit New Member

    Joined:
    Mar 6, 2016
    Member:
    #2855
    Messages:
    929
    Gender:
    Male
    Vehicle:
    2011 Supercharged Mazzulla Long Travel Rock Warrior
    Duh Tundra
    WarEagleSteve and RowdyRon like this.
  28. Jul 14, 2016 at 12:31 PM
    #28
    WarEagleSteve

    WarEagleSteve Getting out of Jersey!

    Joined:
    Aug 4, 2015
    Member:
    #1615
    Messages:
    946
    Gender:
    Male
    First Name:
    Steve
    N.J.
    Vehicle:
    2015 White Tundra Crew Max SR5/Off Road
    WAR EAGLE Ron!!

    Actually, I did it with my Titan and it lasted for 7 years, up until I traded my truck. The stereo guy I deal with gave me some for free. If it wasn't 92 degrees and humidity at 70%, I'd go out right now and do it.

    As to your "asleep" comment, even a blind squirrel finds a nut once in awhile...:p
     
    bandit likes this.
  29. Jul 14, 2016 at 12:32 PM
    #29
    WarEagleSteve

    WarEagleSteve Getting out of Jersey!

    Joined:
    Aug 4, 2015
    Member:
    #1615
    Messages:
    946
    Gender:
    Male
    First Name:
    Steve
    N.J.
    Vehicle:
    2015 White Tundra Crew Max SR5/Off Road
    bandit likes this.
  30. Jul 14, 2016 at 12:49 PM
    #30
    RowdyRon

    RowdyRon Not too old to play

    Joined:
    Jul 8, 2015
    Member:
    #1501
    Messages:
    3,219
    Gender:
    Male
    First Name:
    Ron
    Bentonville, AR
    Vehicle:
    2015 Radiant Red TSS Doublecab 4X4 Off Road
    Deck rail system, Bed divider, door sill protectors, LED reverse light bars, Aries Bull Bar with 28" 180 watt LED light bar, LED step lights, LED bed lights, driver-side grab handle, TRD Rear Sway Bar, BedRug bed mat and tailgate mat, Morimoto Fog Lights, more to come.....
    Wooooooo Pig Sooooie, Steve!
     
    WarEagleSteve likes this.
To Top