Shop Nilight Ignition Coil Pack UF669 Fit for Chevy Cruze Sonic Trax Volt Cadillac ELR Buick Encore 2011-2015 2016-2018 1.4L D521C 55577898 55579072 25198623 Automotive Replacement Ignition Coils 1 Pack in high quality, support 2 Years Warranty. The silicone rubber boot of Nilight ignition coils packs contains silicone oil to make it easier for you to replace and install.