1999 Ford Mustang Exhaust

INKWIZARD

MEMBER
1999 FORD MUSTANG
3.8L
V6
RWD
AUTOMATIC
224,876 MILES

Was told that my donut gaskets need to be replaced and the exhaust is really loud on the passenger side of the exhaust manifold that is bolted to the engine. So my question is do I need both the donut gaskets and the flange gaskets to do the repairs?

Saturday, August 29th, 2015 AT 2:24 AM

4 Replies

HMAC300

MECHANIC
48,601 POSTS

See pic I t may be part of manifold if donut is bad they do not list a separate piece for that check at an auto parts.

Image (Click to make bigger)

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Saturday, August 29th, 2015 AT 6:17 AM

WRENCHTECH

MECHANIC
20,761 POSTS

Just to add to HMAC's answer, these Mustangs are very notorious for breaking the exhaust pipe right below the flange also so don't be surprised if you find a little more than just the gasket when you look at it closer.

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Saturday, August 29th, 2015 AT 7:19 AM

IRON JACK

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1 POST

Had to change the rear end on my 03 3.8 and had an exhaust leak, pulled entire system out from flange to tailpipe and discovered some idiot welded the pipe where it entered the exhaust pipe but missed the crack completely lol who does that? My problem is the donuts are dealer only? Wth. Thinking of going with a universal donuts to stop the ticking

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Monday, April 10th, 2017 AT 5:35 AM

CJ MEDEVAC

MECHANIC
11,004 POSTS

Looks to me like there are no doughnuts, Looking at the pic up top, looks as though its a taper/ flange kinda fit.

The fix would be to tighten the bolts/ nuts evenly to close the gap. Unless there is a crack in the pipe as mentioned above.

The Medic

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Wednesday, April 12th, 2017 AT 6:06 PM