Rear Differential Bushing Leaking

Discussion of Infiniti's amazing (and underrated) sport-luxury crossovers, the EX35 and EX37. For 2014, the EX series will be renamed QX50, in line with Ininfiit's new naming conventions.
sev
Posts: 107
Joined: Wed Jan 15, 2014 3:36 pm
Car: 2010 EX35

Rear Differential Bushing Leaking

Postby sev » Sat Mar 19, 2016 12:00 pm

So I noticed a leak on my driveway which I thought was my differential. Got under the car and looks like its the liquid filled mount that's on the rear of the differential where it mates to the subframe.

Anyone had this issue before? Looks like its a big job to fix.. arrrrggghhh


sev
Posts: 107
Joined: Wed Jan 15, 2014 3:36 pm
Car: 2010 EX35

Re: Rear Differential Bushing Leaking

Postby sev » Wed Jun 01, 2016 1:11 pm

By the way, I did a ton of research on this, as it seems to be a very very common problem for 350/370Z and G35/G37 drivers.

The rear liquid filled bushing wears out and eventually pops and leaks. Guess what? Nissan is happy to sell you the entire REAR SUBFRAME carrier to fix the problem for one stupid bushing. Yes, you read that right. They dont sell the bushing individually.

Good news is whiteline makes a bushing for G37/370Z's, and it Fits our cars. I picked up the bushings for about 80 bucks on Amazon.

Bad news is it requires the removal of the differential to repair it. If you know what you're doing, you can DIY, or find a Nissan specialist in your area to do the work.

The specialist I spoke to said on auto trans cars and less agressive driving, the bushing likely doesnt need to be replaced. I am going to go ahead do mine, I dont even want the thought of a leaky pinion seal... I got quoted about 350 for labor.

So FYI if anyone sees stuff leaking out the back of their EX, this is what it is.

User avatar
XIS
Posts: 865
Joined: Wed Aug 24, 2011 11:00 am
Car: 08 EX35 RWD
17 QX30 Sport
Location: The Desert

Re: Rear Differential Bushing Leaking

Postby XIS » Thu Jun 02, 2016 7:03 am

Thanks for the info! Filed that one in the back of my head for the future. :)

jrmotorsports55
Posts: 152
Joined: Wed Mar 02, 2011 12:28 pm
Car: 2011 EX35 AWD Journey (wife's car)

Re: Rear Differential Bushing Leaking

Postby jrmotorsports55 » Mon Apr 27, 2020 11:47 am

So, wanted to follow up with you as I just noticed this bushing is leaking on my wife’s car. We’re you able to use the Whiteline part? I have read elsewhere that there were figment issues. Thanks!

sev
Posts: 107
Joined: Wed Jan 15, 2014 3:36 pm
Car: 2010 EX35

Re: Rear Differential Bushing Leaking

Postby sev » Fri May 01, 2020 8:40 am

you know. i talked to my mechanic and he said because the car is auto, there will be no problem if i left it as is. I drove it like that 40-50k miles and never had issues. I sold the car last year.

I wouldnt worry about it, but yes the whiteline fits. I bought it but never put it in. I know others have and it worked.

jrmotorsports55
Posts: 152
Joined: Wed Mar 02, 2011 12:28 pm
Car: 2011 EX35 AWD Journey (wife's car)

Re: Rear Differential Bushing Leaking

Postby jrmotorsports55 » Sat May 02, 2020 4:03 am

Yeah, I did some further research, and confirmed the EX rear subframe is the same part number as the g37. The site I read that there were issues was an FX site, and confirmed the FX uses a different rear subframe. I pulled the trigger and ordered the bushing kit on Amazon.

Dzionassi
Posts: 47
Joined: Fri Apr 13, 2018 8:50 pm
Car: 2017 Infiniti QX50

Re: Rear Differential Bushing Leaking

Postby Dzionassi » Sat May 02, 2020 7:07 pm

you can inject some epoxy in to existing bushing and, or add diff brace. I added diff brace ant it improved handling.

jrmotorsports55
Posts: 152
Joined: Wed Mar 02, 2011 12:28 pm
Car: 2011 EX35 AWD Journey (wife's car)

Re: Rear Differential Bushing Leaking

Postby jrmotorsports55 » Sun May 03, 2020 4:17 am

Gotcha. I'm just trying to get rid of the leaking bushing, not really doing as a handling mod. I guess it would run out after a while, and I could have filled with something, replacing it will probably be easier/better solution in the long run. Already pulled the trigger anyway, bushing kit should be here in a day or two. Thanks!


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