No matter the condition of your 2018 CTS, OPGI has the Intake Manifolds products you need to boost performance and get you back on the road. We currently carry two Intake Manifolds items to choose from for your 2018 CTS, and our Price Match Guaranteed prices range from as little as $68.99 up to $299.99. OPGI offers AC Delco plus zero other trusted brands of Intake Manifolds products for your 2018 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 Intake Manifolds items in person.