BluePrint Engines OE Quality ignition coils are an excellent way to top off your fresh Gen III Hemi built, or to replace tired or dirty coils on your daily driver. These are the same Coils that have been tested to 1000 horsepower in our dyno lab. Branded with the BluePrint Engines Logo, you know you're getting quality and performance in a reasonably priced package! Do we claim silly horsepower gains like the competition? Of course not! Do we promise these are OEM quality, tested over 1000HP, and we have meticulously tested and logged tens of thousands of miles on our own personal hemi powered vehicles? YUP!!! Give your Hemi OEM quality ignition, with a price that's easy on your wallet!