Red Ignition Coil Pack + Iridium Spark Plugs for 03-06 Chevy Avalanche 1500, 03-05 GMC Savana 1500 2500 3500, GMC Sierra 1500 HD 2500 HD 3500, Hummer H2, 4.8L 5.3L 6.0L, UF271 IGN348AA, 8 Sets Item Description ? Compatible with: for Chevy Avalanche 1500 2003-2006 5.3L, for GMC Savana 1500 2003-2005 5.3L, for Savana 2500 2003-2005 4.8L 5.3L 2003 6.0L, for GMC Savana 3500 2003-2005 6.0L 2004-2005 4.8L, for Sierra 1500 1999-2006 4.8L 5.3L, for Sierra 1500 2001 2003 2005-2006 6.0L, for Sierra 1500 HD 2001 2003 2005 6.0L, for Sierra 2500 1999-2004 6.0L, for Sierra 2500 2000 5.3L, for Sierra 2500 HD 2001-2005 6.0L, for Sierra 3500 2002 6.0L, for Hummer H2 2003-2006 6.0L ? Replace for Part Number: 12558693, GN10298, C1208, GN10298, UF271, 52-1618, 5C1083, C1208, D581, E226, IFN348AA ? Performance Boost: The exterior of our ignition coils are made of epoxy resin and PPT plastic to prevent the ignition coils from melting due to engine overheating, and the interior of our ignition coils are made of highly conductive copper coils for faster ignition. ? Premium Quality: Compared with ordinary spark plugs, iridium spark plugs have stronger oxidation resistance, electrodes are more resistant to wear and tear, stronger electrical and thermal conductivity, effectively improving ignition efficiency and extending service life. ? Warranty: We offer a one-year warranty. ? See more product details Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.