Not sure which 2003 Pontiac Grand Am 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 bought this to replace the choking CAT on my pontiac grand am, and first time i hit the road after installation i noticed a nice lil boost of low end torque, sounds nice too. was hoping to install it myself but the bolts were rusted and needed a gasket for both ends of the pipe so not exactly just take it out of the box, take the old 1 off, put the new 1 on, but maybe it's not the same for every car." —Jamie K from Coatesville, PA bought a Magnaflow Catalytic Converters - 49 State Legal for a 2003 Pontiac Grand Am, 3.4L V6.