Engine Water Pump FOR 1999-2007 Buick, Chevy Silverado/Sierra 1500/2500/3500, GMC, Hummer, Isuzu, Saab 9-7x, Workhorse 12456113,12458935, 12556449, 12559271, 12560380, 12562458, 12703898, 19195104, 19256261, 31028406, US64 In order to determine compatibility please refer to the chart of compatible vehicles, cross-reference OEM part numbers call local dealership or ask your mechanic. PLEASE READ CROSS-CHECK OE REFERENCE PART NUMBERS PRIOR TO ORDERING! THIS IS THE ONLY RIGHT WAY TO ORDER CORRECT PART! OE Reference Codes: OEM 12456113, 12458935, 12556449, 12559271, 12560380, 12562458, 12703898, 19195104, 19256261, 31028406, 511813, 555087, 8124589350, 8888942900, 88894290, 8890174390, 8890180400, 8890181660, 88926296, 89017315, 89017439, 89018040, WP9182 AIRTEX AW5104 CARTER W9409M GATES 45005 GMB 1307340 MELLING MWP500 SKP SK1307340 FVP 1307340 US MOTOR WORKS US64 Specs: Fan Clutch Included No Housing Material Cast Aluminum Impeller Material Stamped Steel Impeller Rotation Reverse Includes Back Housing No Outlet Quantity 4 Pulley Included Yes Thermostat And Housing Included No Timing Belt Driven No Water Pump Drive Type Accessory Belt Fitment: BUICK RAINIER 2004-2006 CADILLAC ESCALADE 2002-2006 CHEVROLET AVALANCHE 1500 2002-2006 CHEVROLET EXPRESS 1500 2003-2006 CHEVROLET EXPRESS 2500 2003-2006 CHEVROLET EXPRESS 3500 2003-2006 CHEVROLET SILVERADO 1500 1999-2006 CHEVROLET SILVERADO 2500 1999-2006 CHEVROLET SILVERADO 3500 2001-2006 CHEVROLET SSR 2003-2006 CHEVROLET SUBURBAN 1500 2000-2006 CHEVROLET SUBURBAN 2500 2000-2006 CHEVROLET TAHOE 2000-2006 CHEVROLET TILTMASTER 2003-2006 CHEVROLET TRAILBLAZER 2003-2006 GMC ENVOY 2003-2006 GMC FORWARD 2004-2006 GMC SAVANA 1500 2003-2006 GMC SAVANA 2500 2003-2006 GMC SAVANA 3500 2003-2006 GMC SIERRA 1500 1999-2006 GMC SIERRA 2500 1999-2006 GMC SIERRA 3500 2001-2006 GMC YUKON 2000-2006 GMC YUKON XL 1500 2000-2006 GMC YUKON XL 2500 2000-2006 HUMMER H2 2003-2006 ISUZU ASCENDER 2003-2006 ISUZU NPR 2004-2007 SAAB 9-7X 2005-2006 WORKHORSE FASTRACK FT1061 2004-2005 WORKHORSE FASTRACK FT1261 2005 WORKHORSE FASTRACK FT1461 2004-2005 WORKHORSE FASTRACK FT1601 2004-2005 WORKHORSE FASTRACK FT1801 2004-2005 ~~~~~~~ *Models presented for the reference purpose only! *May fit other makes-models not listed.