• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SVT Tech Forum

IRS fluid change!

  • Thread starter Thread starter Marine18
  • Start date Start date Apr 8, 2012
M

Marine18

New Member
Dec 16, 2009
21
0
1
Apr 8, 2012
#1
  • Apr 8, 2012
  • #1
I have a 2003 Cobra recently the rear diff started leaking so i need to replace the gasket, problem is i cant find any good guides on how to do it. If anybody has a good link on it and would like to post it I would greatly appreciate it!! thank you!
 
K

Kilgore Trout

Fried or Broiled ?
10 Year Member
Mar 30, 2005
4,749
95
134
Apr 30, 2012
#2
  • Apr 30, 2012
  • #2
Well the diff is known to leak when the case cracks. Be sure and check for that.
 

98stanggt22

Member
Oct 10, 2011
65
0
16
Illinois
May 21, 2012
#3
  • May 21, 2012
  • #3
well, if it is only a leaking pan and it needs to be replaced thats simple. just take off the bolts little by little and when you crack open the pan have a oil drain pan under and be ready for the fluid to come out. it should be around 2 quarts. once you get the pan of it is best to clean it up as best as possible so have a clean smooth surface if reusing same pan. be sure to scrape off the silicone and straighten the pan as best as possible if bent. you can use a bench and a straight edge for the underside and a hammer. if its already straight after checking it with a straight edge you dont need to hammer. when your old pan is nice and straight and also clean or your new pan, make sure all the fluid is drained, then with your new gasket, get some silicone gasket maker and evenly spread a decent but not overwhelming amount of it on both sides of the gasket. then, put the gasket on the pan. then, simply put on the rear end. make sure to line up the gasket and pan with the bolt holes. next, tighten up bolts to the correct torque specs in a star pattern. when that is all said and done, if you have a limited slip differential, which you should, take the fill bolt off at the top of the housing or in some cases the axle and fill it with the correct fluid with the correct level. your local parts store will be able to tell you the correct fluid and amount. make sure you get the right oil or you can invest in a new axle.. good luck, its a very simple procedure, but if possible, get it on a lift. if no access to a lift jack your rear tires as high as you can but do it safely my friend
 
You must log in or register to reply here.

Similar threads

C
C4 trans help needed
  • CPH89LX
  • Apr 26, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
6
Views
141
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 28, 2026
CPH89LX
C
G
Idle surging after warm up
  • GALLY3309
  • Jun 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
74
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 10, 2026
Noobz347
S
Differential noise over bumps
  • sharkrat
  • Apr 10, 2026
  • 2005 - 2009 Specific Tech
Replies
3
Views
132
2005 - 2009 Specific Tech Jun 18, 2026
TPony
Engine Explorer - Lower intake internal cleaning
  • R82148V
  • Nov 11, 2025
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
42
Views
1K
Fox 5.0 Mustang Tech Dec 6, 2025
rednotch
S
Need help asap
  • shaggyman65
  • Dec 24, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
243
1996 - 2004 SN95 Mustang -General/Talk- Dec 24, 2025
shaggyman65
S
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SVT Tech Forum
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?