AC DELCO 251-698 PUMP ASM-WATER Completely pressure-tested for leak-free performance High-quality bearings and heat-treated impellers for long life Designed for smooth flow of coolant for superior protection. more details on - http://www.carid.com/acdelco/gm-original-equipment-engine-water-pump-mpn-251-698.html Fits: 2010 2011 Buick Lucerne 4.6L Fits: 2010 2011 Cadillac DTS