Some are factory equipped with a cat, some are not. Your Ford dealer may be able to check using the VIN.
if the 2003 ,350 is a diesel, there is no catalictic converter. only gas engines have them
clogged or damaged catalytic converter
It is part of the exhaust system before the muffler under the vehicle
my 2003 f350 dually avg 13-14 combined
It should get at least 19 miles
How do you change the alternator on a 1996 ford F350 diesel
where does the oil pressure regulator on a ford f350 diesel truck
sounds like the torque converter case weld have split. did it happen under a high load application(like a heavy 5th wheel trailer)
how do i down load a wiring diagram for a f350 6.0 diesel engine compartment
Where is the belt tensioner on a ford 2003 f350 6l diesel? i need to loosen so that i can replace the alternater
2007 F350 4 WHEEL DRIVE DUALLEY 8500 LBS
yes