No matter the condition of your 1966 Eldorado, OPGI has the Valve Covers & Dress-Up Kits products you need to boost performance and get you back on the road. We currently carry 35 Valve Covers & Dress-Up Kits items to choose from for your 1966 Eldorado, and our Price Match Guaranteed prices range from as little as $3.43 up to $724.99. OPGI offers Eddie Motorsports plus six other trusted brands of Valve Covers & Dress-Up Kits products for your 1966 Eldorado, to help you find quality parts you can rely on. With OPGI's 45-day return policy and ten 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 Valve Covers & Dress-Up Kits items in person.