General description The Auto Parts Ignition Coil is designed for various models including the Envoy, H3, and Trailblazer, ensuring optimal performance for your vehicle's ignition system. Technical specifications Type: Ignition Coil Part Numbers: 12596547, 12612369, 12619472, 12629472, 126294721, 8125965470, 12496547 Color: Black Material: Plastic Measurement allowed error: +/- 1-3 cm Compatibility and accessories Suitable for L6-4.2L (2006-2007) Suitable for L4-2.9L (2007-2012) Suitable for L5-3.7L (2007-2012) Compatible with Trailblazer L6-4.2L (2006-2009) Compatible with Trailblazer EXT L6-4.2L (2006) Compatible with Envoy L6-4.2L (2006-2009) Compatible with H3 L5-3.7L (2007-2010) Compatible with H3T L5-3.7L (2009-2010) Compatible with Ascender L6-4.2L (2008-2009) Compatible with 9-7X L6-4.2L (2006-2008) Installation Easy installation process, simply replace the old ignition coil with the new one. Usage Designed to improve engine performance and fuel efficiency. Ensures reliable