Now you can have ACCEL late model Supercoils in additional colors – Blue and Black! These are the same high quality high output coils ACCEL has been offering in yellow for years. Only now, you have different colors to choose from. In addition to the ever popular ACCEL yellow, Ford 4.6L and 5.4L 4 valve Mod Motor applications are now available in black or blue! ACCEL Supercoils feature optimized windings, resistance and turn ratios that help to unleash your engines maximum horsepower potential.ACCEL Super Coils feature advanced bobbin technology, highly specialized silicone magnetic steel cores, optimized windings, proper resistance and engineered turn ratios that deliver a high performance, quality coil. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct high performance replacements for OEM coils.