Application List Dodge Durango 5.7L (03-10) Dodge Ram 1500 5.7L (01-08) Dodge Ram 2500 5.7L (02-08) Jeep Grand Cherokee III 5.7L (05-10) (non-exhaustive listing)HP Ignition Uprated Coilpacks SpecificationsSpecially designed for tuned engines operating at high revs and temperatures the HP Ignition coilpacks offer superior resistance and quality compared to OEM ignition coils. The installation of HP Ignition coilpacks will solve all common ignition problems such as misfires and hesitant performance.The HP Ignition coilpacks provide a gain in horsepower and torque up to 4 % thanks to their high and stable voltage ensuring a powerful spark even at high revs. The installation is totally plug & play without any modifications or adjustments necessary.Comparative Performance GraphComparison carried out by our partner W-Autosport using a bone stock Nissan 200SX S14 with an SR20DET engine.