Not sure which 2003 Ford F-150 Catalytic Converters are right for you? We have over 491 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I installed magna flow cats and Gibson dual port muffler with split side opposite exit. Sounds great increase mpg and hp." —Adrian H from Chico, CA bought a Magnaflow Catalytic Converters - 49 State Legal for a 2003 Ford F-150.
"Just purchased supposedly California approved converters both forward and aft on the driver side for my 2003 Ford F-150. So far they're doing great performance wise. My check engine light came on again after they were installed and the mecahnic said it's a possiblity that the catalytic converters I bought don't have enough platium in them so that the check engine light will stay off, is this true??? If you could get back with me it would be appreciated!!! Thanks!" —Albert R from Rio Rancho, NM bought a Magnaflow Catalytic Converters - 49 State Legal for a 2003 Ford F-150.