It may fit, but what you have to watch for is where the sensor connections are on the Intake tube. I put my old CAI from a 98 Civic EX onto my friend's 98 Si, but the O2 sensor hole wasn't even close to being in the right place. So we had to drill out a hole on the side of the intake, and put a rubber fitting in it, and then push the O2 needle into it...also had to block the old hole. So, you may, and probably will run into that problem