Set of 6 ISA Ignition Coils Compatible with 2006-2009 Buick Rainier Chevrolet Trailblazer GMC Envoy Ascender 9-7X 4.2L L6 Compatible with UF-497 C1558

ISA Ignition Coils are designed with superior quality materials using only the highest grade material such as durable copper wire with OE manufacturer durability. ISA Ignition Coils are durable and reliable under extreme conditions and heavy load while providing quality electrical output, anti-corrosion, and abrasion tested resistance. Tested in real situations to perform with reliability and peace of mind. ISA's engineers have developed new technology to reduce common ignition issues such as: no start/hard start, crack failure, misfires, low power, inconsistent transmission shifts, spark plug fouling, premature catalytic converter failure, and other issues like poor fuel economy. ISA Ignition Coils are made to operate reliably under all conditions and throughout the entire engine speed range for peak engine performance. Compatible with: Buick Rainier 2006-2007 L6 4.2L Chevrolet Colorado 2007-2012 L4 2.9L Chevrolet Colorado 2007-2012 L5-3.7L Chevrolet Trailblazer 2006-2009 L6 4.2L Chevrolet Trailblazer EXT 2006 L6-4.2L GMC Canyon 2007-2012 L4 2.9L GMC Canyon 2007-2012 L5-3.7L GMC Envoy 2006-2009 L6 4.2L GMC Envoy XL 2006 L6-4.2L Hummer H3 2007-2010 L5 3.7L Hummer H3T 2009-2010 L5 3.7L Isuzu Ascender 2006-2008 L6 4.2L Saab 9-7X 2006-2008 L6 4.2L Part number: ‎UF-497 C1558 Shipping/Return/Warranty Free 2-day shipping (for most items) Free 30-day return (from date of delivery) 1 year warranty