No matter the condition of your 2004 CTS, OPGI has the Radiators you need to boost performance and get you back on the road. We currently carry four Radiators to choose from for your 2004 CTS, and our Price Match Guaranteed prices range from as little as $149.99 up to $809.99. OPGI offers Cold Case Radiators plus one other trusted brands of Radiators for your 2004 CTS, to help you find quality parts you can rely on. With OPGI's 45-day return policy and thousands of 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 Radiators in person.