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8x Spark Plugs Autolite USA Platinum fits: Chevrolet Avalanche 5.3L 2002 - 2009 Chevrolet Avalanche 5.3L Flex Fuel 2005 - 2012 Chevrolet Avalanche 6.0L 2007 - 2009 Chevrolet Avalanche 8.1L 2002 - 2006