No matter the condition of your 1980 Bonneville, OPGI has the Differential & Rear-End Components products you need to boost performance and get you back on the road. We currently carry ten Differential & Rear-End Components items to choose from for your 1980 Bonneville, and our Price Match Guaranteed prices range from as little as $179.99 up to $663.99. OPGI offers Auburn Gear plus one other trusted brands of Differential & Rear-End Components products for your 1980 Bonneville, to help you find quality parts you can rely on. With OPGI's 45-day return policy and one 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 Differential & Rear-End Components items in person.