Is there a definite fix for rear axle breather leaks? - Page 2 - Ford Mustang Forum
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Originally Posted by 70monte View Post
I bought the same thing and did the same thing. I've had no leaking problems with 20,000 miles on the clock.

You can buy the kit on Ebay that comes with the cover and longer bolts for around a $100.
New 1985 2014 Mustang 8 8" Finned Rear Axle Cover Kit w Bolts Girdle GT500 | eBay

Wayne
Good price. If you know how to sort your way through OEM repair parts web sites you can find it for even less than that. I bought mine for $65.

There is no reason anybody should ever pay the retail prices being charged by various vendors under the Ford Racing/Ford Performance brand.

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I got the finned diff cover and put the turkey baster in the vent hole up on top, and haven't had a problem since. That includes 30-minute road track sessions which would overheat the diff if anything will.


| 2010 GT coupe | Daily Driver with some Steeda and GT500 take-off stuff for the occasional track day
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post #18 of 33 (permalink) Old 05-13-2016 Thread Starter
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good to know thanks, its going to be a messy mod tho

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I'm on my 2nd 5.0 and have not seen any oil leaking from the axle. OP have you taken your car to the Dealer
for a fix?

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Quote:
Originally Posted by Norm Peterson View Post
Mainly it means driving hard on a road course at an HPDE track day (or harder still at time trialing or wheel to wheel racing). Think hard cornering, which sends the diff fluid into the outboard side axle tube.

That kind of track driving should be about as much harder than your definition of "pretty hard", as your "pretty hard" is from moderate.


Norm
I do my fair share of hard cornering and drifting on the streets - Traction fully off 6 second hold
I'll check for leaks soon

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Quote:
Originally Posted by Blazin72 View Post
Good price. If you know how to sort your way through OEM repair parts web sites you can find it for even less than that. I bought mine for $65.

There is no reason anybody should ever pay the retail prices being charged by various vendors under the Ford Racing/Ford Performance brand.
Did you get the longer bolts included with that $65 price?

I used APR bolts because they didn't have that kit out when I bought my cover.

Wayne

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Nah. I just went to the local Ace Hardware and bought some black oxide coated flanged head grade 5 bolts.

Mine came with the magnetic fill and drain my plugs too. Apparently some versions of that cover don't come drilled for the plugs.
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Quote:
Originally Posted by Blazin72 View Post
Nah. I just went to the local Ace Hardware and bought some black oxide coated flanged head grade 5 bolts.

Mine came with the magnetic fill and drain my plugs too. Apparently some versions of that cover don't come drilled for the plugs.
Yeah, those bolt heads rust up pretty quickly but work fine . . . same on mine.

The drain and fill holes are key features; I'm surprised they would sell it without those.

| 2010 GT coupe | Daily Driver with some Steeda and GT500 take-off stuff for the occasional track day
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Yeah they rusted over. The cover has a layer of oxidation on it too.

If I were to strip and paint the axle housing I'd probably get some stainless bolts. Otherwise, just having the fill and drain plugs is a win. I've always had a strong dislike for differential covers and transmission pans without drain plugs.
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TSB 12-8-15 was updated with 14-0046 in March of 2014.



Picked up this tube from the dealership for less than $10 last week. It is the newer solution/TSB rather than the turkey baster. Comes with a barbed nipple and the tube clips to the top of the differential cover and sticks up about another 2 inches with a one-way valve on the end. Pics are not of my car but my axle looked similar with all the oil on it.


New part number is DR3Z-4022-A

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Quote:
Originally Posted by MADSCOTSMAN View Post
Picked up up this tube from the dealership for less than $10 last week. It is the newer solution/TSB rather than the turkey baster. Comes with a barbed nipple and the tube clips to the top of the differential cover and sticks up about another 2 inches with a one-way valve on the end. Pic is not of my car but my axle looked similar with all the oil on it.
part number?

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Quote:
Originally Posted by winkawak View Post
part number?

Updated post above with new TSB and part number
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I may have to look into that new one. Hope either the above part number also fits the earlier cars with the vent on the passenger side axle tube or that there's a specific kit for them. I hate trying to guess how much I may have lost at a track day and making another mess around the fill hole.


Norm

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My cover has the fill and drain plugs as well but I don't know if they are magnetic since I have not had them out yet.

Wayne

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Quote:
Originally Posted by Norm Peterson View Post
I may have to look into that new one. Hope either the above part number also fits the earlier cars with the vent on the passenger side axle tube or that there's a specific kit for them. I hate trying to guess how much I may have lost at a track day and making another mess around the fill hole.


Norm


Would be pretty easy to just spin the top clip around to the other side of the hose so you could mount it on the other side. As long as the fitting in the axle is the same size, I can't imagine it not working. Was like $9 and some change, so worth a try IMO.

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