No matter the condition of your 2003 Monte Carlo, OPGI has the Oil & Fluid Coolers products you need to boost performance and get you back on the road. We currently carry one Oil & Fluid Coolers items to choose from for your 2003 Monte Carlo, and our Price Match Guaranteed prices range from as little as $219.99 up to $219.99. OPGI offers Thermo-Tec plus zero other trusted brands of Oil & Fluid Coolers products for your 2003 Monte Carlo, to help you find quality parts you can rely on. With OPGI's 45-day return policy, 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 Oil & Fluid Coolers items in person.