Ignition Coil Pack for 2005-2014 Chevrolet Express Silverado 1500 Impala Malibu Uplander GMC Savana Sierra Pontiac G6 Montana Saturn Buick Lucerne V6 Compatible with C1521 UF-434 DIRECT REPLACEMENT/ UPGRADE over your original stock coils. We only use the highest grade materials. This makes our product durable and reliable under extreme conditions while providing High Electrical Resistance, strong Spark from plugs, and being resistant to Corrosion and Abrasion IGNITION COIL PACK for, 3.4L 3.5L 3.9L 4.3L, Express 1500 2008 to 2013, Silverado 1500 2007 to 2013, Savana 1500 2008 to 2013, Sierra 1500 2007 to 2013, Lucerne 2009 to 2011, Impala 2006 to 2011, Malibu 2004 to 2010, G6 2005 to 2010, Vue 2008 to 2010, Equinox 2005 to 2009, Uplander 2005 to 2009, Montana 2005 to 2009, Torrent 2006 to 2009, Aura 2007 to 2008, Rendezvous 2006 to 2007, Terraza 2005 to 2007, Monte Carlo 2006 to 2007, Relay 2005 to 2007 CHEVROLET, GMC, BUICK, PONTIAC, SATURN owners please check fitment bar and description before you BUY IT as the ignition coil pack can change based on the year/ month of manufacture of your vehicle Other Interchangeable/Compatible Part Numbers: C1521, D591a, D599a, 5c1564, E914, 52-1826, Ic554, 12568185, 12579177, 12587153, 12595088, Uf-434 One Year Warranty Eliminate misfire Direct installation into vehicle Increase horsepower Stronger throttle response Durable as they come Custom-made for the road Fit OE equipment with ease Tested in real life situations Most coils comepre-greased