No matter the condition of your 1978 Regal, OPGI has the Water Pumps you need to boost performance and get you back on the road. We currently carry fourteen Water Pumps to choose from for your 1978 Regal, and our Price Match Guaranteed prices range from as little as $6.49 up to $594.99. OPGI offers Aeromotive plus four other trusted brands of Water Pumps for your 1978 Regal, 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 Water Pumps in person.