No matter the condition of your 1999 Monte Carlo, OPGI has the Fittings & Hoses you need to boost performance and get you back on the road. We currently carry 37 Fittings & Hoses to choose from for your 1999 Monte Carlo, and our Price Match Guaranteed prices range from as little as $21.99 up to $539.99. OPGI offers Old Air Products plus six other trusted brands of Fittings & Hoses for your 1999 Monte Carlo, 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 Fittings & Hoses in person.