Ive searched but I really can find anything that answers my question. Is there any difference between the fenders on a 2014 civic si coupe and sedan? Because the coupe fenders are hundreds of dollars more but I've heard they are the same so I'm wondering why there's such a huge price difference? If I get sedan fenders they will fit and look the same as the coupes fenders?

 

I believe the headlights come to a sharper point in the corner at the fender on the coupe than on the sedan. I don't think there is a difference in the fenders between an SI coupe and a standard Civic coupe. Same for the sedan, but they don't interchange between sedan and coupe.

Sedan fenders are likely cheaper due to how many more sedans are on the road compared to coupes. Supply and demand.