No matter the condition of your 1971 Eldorado, OPGI has the Gauges & Accessories products you need to boost performance and get you back on the road. We currently carry 191 Gauges & Accessories items to choose from for your 1971 Eldorado, and our Price Match Guaranteed prices range from as little as $4.99 up to $1,292.99. OPGI offers Marshall Instruments plus nine other trusted brands of Gauges & Accessories products for your 1971 Eldorado, to help you find quality parts you can rely on. With OPGI's 45-day return policy and thirteen 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 Gauges & Accessories items in person.