<p>If you're looking for the best of the best look no further. This may just look like a regular BMW water pump to you, but it is not. The Stewart high performance water pump has built a reputation over the years as being one of the best, most robust water pumps on the market. This water pump is a direct replacement with absolutely no modifications. It features a heavy duty bearing and stainless steel impellers delivering 20% more flow than the stock water pump. A must have modification for any race or track day enthusiast. BMW coolings system aren't known to be the most reliable, but you can change that.</p><p></p><p><strong>Features:</strong></p><ul> <li>Up to 20% increase of water flow over stock pump</li> <li>Twice as efficient as factory pump</li> <li>Much less parasitic drag than other pumps</li> <li>Racing or stock factory replacement applications</li> <li>Stainless steel impeller</li> <li>Heavy duty bearing</li> <li>High quality water seal</li> </ul><p></p><p>Fitment: All M50, M52, S50, S52, M54 Engines</p>