Not sure which 2003 Jeep Wrangler In-Line Modules are right for you? We have over 1502 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 have a 2003 wrangler 2.4l and this great priced Jet chip is worth every penny! More power all round, 15 miles better to a tank of gas(could be more but i drive faster now), overall it's the best purchase for any vehicle you have!" —Chris W from Reedsport, OR bought a Jet Performance Module for a 2003 Jeep Wrangler, 2.5L 4-cyl..