No matter the condition of your 2003 Escalade EXT, OPGI has the Engines & Components products you need to boost performance and get you back on the road. We currently carry 50 Engines & Components items to choose from for your 2003 Escalade EXT, and our Price Match Guaranteed prices range from as little as $4.16 up to $27,749.99. OPGI offers Comp Cams plus eight other trusted brands of Engines & Components products for your 2003 Escalade EXT, to help you find quality parts you can rely on. With OPGI's 45-day return policy and five customer reviews, you can shop with the utmost confidence. Enjoy parts delivered directly to your home, or visit our sunny Southern California Showroom & Warehouse to check out our Engines & Components items in person.