No matter the condition of your 1966 Bonneville, OPGI has the Firewall/Cowl products you need to boost performance and get you back on the road. We currently carry five Firewall/Cowl items to choose from for your 1966 Bonneville, and our Price Match Guaranteed prices range from as little as $7.99 up to $89.99. OPGI offers RESTOPARTS plus one other trusted brands of Firewall/Cowl products for your 1966 Bonneville, 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 Firewall/Cowl items in person.