We are an Aftermarket, and OE Supplier for Engine Replacement Parts. We Specialize in both Domestic and Foreign Auto Parts. This is a Set of Brand New Genuine GM Factory BARE Cylinder Heads.Contents : 2-Bare Cylinder Heads ; Front or Rear Part : 12590746 , replaces 12624610 Material : Aluminum Description : New 3.5L & 3.9L Cylinder Heads ; Buick; Chevrolet; GMC; Pontiac; Saturn Information : Makes / Models AURA : 2007-2008; 3.5L MALIBU : 2007; 3.5L G6: 2006-2008; 3.5L/ 3.9L MALIBU : 2008; 3.5L G6 : 2009; 3.5L (VIN N, 8th digit), opt LZ4, w/o Calif emissions MALIBU : 2009-2010; 3.5L, (VIN K, 8th digit); opt LZE G6 : 2009; 3.9L MALIBU : 2009-2010; 3.5L, (VIN N, 8th digit); (opt LZ4), w/o opt NU6 G6 : 2009-2010; 3.5L, (VIN K, 8th digit), opt LZE MONTANA : 2007-2009; 3.9L IMPALA : 2006; 3.5L MONTE CARLO : 2006; 3.5L IMPALA : 2006-2011; 3.9L MONTE CARLO : 2006-2007; 3.9L IMPALA 07-10 3.5L, VIN K (8th digit) MONTE CARLO : 2007; 3.5L, (VIN K,8th digit) IMPALA : 2007-2010; 3.5L, (VIN N, 8th digit), front RELAY : 2006-2007; 3.9L IMPALA : 2011; 3.5L, (VIN K, 8th digit) TERRAZA : 2006-2007; 3.9L LUCERNE : 2009-2011; 3.9L UPLANDER : 2006-09; 3.9L MALIBU : 2006-2007 3.9L VUE : 2008-2010; 3.5L Note : Please Compare Casting Number Prior to Purchase **FREE SHIPPING does NOT Include Alaska , Hawaii, and or {US Protectorates, American Samoa, Guam, Mariana Islands, Marshall Islands, Micronesia, Palau, Puerto Rico, U.S. Virgin Islands}.