As a new buyer in need of high-performance ignition parts for my automotive project, I stumbled upon this gem. Thanks to my knowledge gained in practice, i realized the importance of a non-resistor spark plug and this Autolite 4PK truly delivers. The ignition performance has noticeably improved, resulting in smoother starts and increased power.The build quality seems excellent, but the price is slightly higher compared to other options in the market. Nonetheless, worth every penny for the enhancSee full review