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Will a 4.0 liter catalytic converter fit on a 4.6 liter engine mustang?

Will a catalytic converter used on a 4.0 liter V6 fit on a 4.6 liter V8 2007 mustang? They look identical. I am trying to find affordable solutions for replacing my cats on 2007 mustang in California. There are no approved after market parts for my particular model, unfortunately.

Update:

I can't find any scrap converters for 4.6 2007 mustang, but there are some for 4.0.

Update 2:

My cats are not bad, I gutted them when I lived out of state w/ o smog testing. Now I need smog testing hence, the new cat requirement.

1 Answer

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  • 8 years ago
    Favorite Answer

    CATS do NOT just go bad any more especailly on cars made after 2000! If you have a CLOGGED UP converter there is SOMETING ELSE going on here! Try cleaning yoru IDLE AIR CONTROL VALVE after it is REMOVED from yoru INTKAE MANFIOLD! then cleane the THROTTLE BODY as well ! I USE AMSOI LPOWER FOAM and GUMOUT for this ritual! RUN BOTH CLEANERS through your PCV valve as well! The only reason to replace a CONVERTER is if the car got DAMAGED on the UNDER BODY< or if the seams have RUSTED and now LEAK! A CLOGGED UP CONVERTER is totaly USEABLE! it means your AIR/FUEL mxiture is OFF TRACK! A CLEAN IAC vavle INSURES that you get a good AIR/FUEL mxiture at MOST times! GOOD LUCK!!

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