I have a 1996 F-150 4x4 with the 5.0 and Automatic Transmission. I have this part and it is supposed to be part of the California Emissions system, but the Ford Dealer couldn't find it. I am trying to figure out what it does and if I need it. I currently just have a hose in between where it was to keep it from whistling since this part is split up its seem.

What it says is: Ford
FITE-9S458-AA
Made in Canada
PA

 

Probably just a muffler of some sort

 

It's for a 1991...

F=1990-1996 (7)
1=91
T=Truck


Part of the SMOG emissions system, IIRC....

 

I am fairly certain it has the original engine and it is a 1996, so I guess the part itself could have been replaced with a 91, but where would I look to replace it. I have searched the part number and found nothing. Also, Rock Auto doesn't have the part and they have had every other strange part I have been looking for. Is it alright to just replace it with a hose and not worry about it or not?

 

You can do that

 

I.should have kept mine. I removed all the air pump tubing.and all a few months ago. That black assembly is just a muffler type tube that come from the pump to the metal tube that runs along the passenger side of your motor...always in the way of accessing your spark plugs. Just run a tube and save yourself the hassle of trying to locate it from the stealership

 

That just means the part was released in 1991, it doesn't indicate what years it fits.

 

The correct FORD part# is F1TZ-9S458-A
Unfortunately not available from Ford anymore.
I checked the on-line parts locator and the obsolete parts vendors I deal with-no luck.
Looks like salvage yard time.

 

ive got one of them. put it in the scrap barrel as soon as i took it off the smog pump but its still on top if you needed it.

 

For anyone still wondering months later.
I spent a while punching through the wires and vacuum lines torquing at my O2 and that piece fell in my arm. I was thinking evap component at first, when I searched the number online. Its a part of secondary air injection. Still searching. Ended up with stripping the but on o2.
"Right on brotha" words of a colesburg, ky man.