No matter the condition of your 1981 Bonneville, OPGI has the Intake Manifolds you need to boost performance and get you back on the road. We currently carry nine Intake Manifolds to choose from for your 1981 Bonneville, and our Price Match Guaranteed prices range from as little as $312.99 up to $4,848.99. OPGI offers Lokar plus zero other trusted brands of Intake Manifolds for your 1981 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 Intake Manifolds in person.