No matter the condition of your 2008 STS, OPGI has the Water Pumps products you need to boost performance and get you back on the road. We currently carry two Water Pumps items to choose from for your 2008 STS, and our Price Match Guaranteed prices range from as little as $45.99 up to $49.99. OPGI offers RESTOPARTS plus minus one other trusted brands of Water Pumps products for your 2008 STS, to help you find quality parts you can rely on. With OPGI's 45-day return policy, 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 items in person.