Gates 42571 Engine Water Pump. NAPA 42571. Fits what vehicles: 2006-2010 Subaru Forester, 2006-2011 Subaru Impreza, 2006-2009 Subaru Legacy, 2006-2011 Subaru Outback. Every Gates high-quality new water pump is constructed with premium alloy materials and a 100 percent functional test of seals and bearings along with a 100 percent leakage test for both the casting and assembled water pump.