No matter the condition of your 2012 CTS, OPGI has the Fuel System Testers products you need to boost performance and get you back on the road. We currently carry six Fuel System Testers items to choose from for your 2012 CTS, and our Price Match Guaranteed prices range from as little as $431.99 up to $714.99. OPGI offers DiabloSport plus one other trusted brands of Fuel System Testers products for your 2012 CTS, 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 Fuel System Testers items in person.