KAX 6 Ignition Coils & 6 Iridium Spark Plugs Set for Trailblazer 2002-2005 | Fits: Colorado 2004-2006, GMC Envoy 2002-2004 4.2L, Canyon 2004-2006, H3 2006, Envoy XL 02-05, Trailblazer EXT 02-05, UF303