No matter the condition of your 1966 Chevelle, OPGI has the Differential & Rear-End Components products you need to boost performance and get you back on the road. We currently carry 66 Differential & Rear-End Components items to choose from for your 1966 Chevelle, and our Price Match Guaranteed prices range from as little as $8.49 up to $4,429.99. OPGI offers Moser Engineering plus twelve other trusted brands of Differential & Rear-End Components products for your 1966 Chevelle, to help you find quality parts you can rely on. With OPGI's 45-day return policy and fifteen 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.