Replace Part Number:
UF271, D581, 12556893, 12558693, 12570553, 3859078, 38590782, 392889925

Compatible with:
Compatible with 2002-2006 Chevrolet Avalanche 1500
Compatible with 2003-2006 Chevrolet Avalanche 2500
Compatible with 2003-2006 Chevrolet Express 1500
Compatible with 2003-2005 Chevrolet Express 2500
Compatible with 2003-2004 Chevrolet Express 3500
Compatible with 2006 Chevrolet Monte Carlo
Compatible with 1999-2006 Chevrolet Silverado 1500
Compatible with 1999-2007 Chevrolet Silverado 2500
Compatible with 2001-2007 Chevrolet Silverado 3500
Compatible with 2003-2004 Chevrolet Sonora
Compatible with 2003-2004 Chevrolet SSR
Compatible with 2000-2006 Chevrolet Suburban 1500
Compatible with 2000-2006 Chevrolet Suburban 2500
Compatible with 2000-2006 Chevrolet Tahoe
Compatible with 2003-2004 Chevrolet Trailblazer

Compatible with 2003-2004 GMC Envoy
Compatible with 2003-2005 GMC Savana 1500
Compatible with 2003-2005 GMC Savana 2500
Compatible with 2003-2005 GMC Savana 3500
Compatible with 1999-2007 GMC Sierra 1500
Compatible with 1999-2007 GMC Sierra 2500
Compatible with 2001-2007 GMC Sierra 3500
Compatible with 2000-2006 GMC Yukon
Compatible with 2000-2006 GMC Yukon XL 1500
Compatible with 2000-2006 GMC Yukon XL 2500

Compatible with 2002-2006 Cadillac Escalade
Compatible with 2003-2007 Hummer H2
Compatible with 2004-2005 Workhorse Fastrack FT1061
Compatible with 2004-2005 Workhorse Fastrack FT1461
Compatible with 2004-2005 Workhorse Fastrack FT1601
Compatible with 2004-2005 Workhorse Fastrack FT1801
Compatible with 2005 Workhorse Fastrack FT1261

Package Include:
Set of 8 Ignition Coil Pack
Set of 8 Spark Plug Wire Harness
Set of 6 Wire Separator Loom