Edelbrock Coil Pack No. 22791 is a set of eight coil-on-plug coils designed as direct performance replacements for the OEM coils on 2008-18 Ford 4.6L-5.4L V8 engines. This coil pack can also be used to replace the OEM coils on 6.8L Triton V10 engines however you must add two additional single coils (No. 22790 x 2) to replace all 10 of the 6.8L coils. Each No. 22790 coil and No. 22791 coil pack feature advanced technology with heavy-duty primary and secondary windings inside of a corrosion-resistant housing. The enhanced windings in these coils offer higher energy and voltage output for greater spark and can help to provide quicker starts with improved idle quality. Coil housings are resistant to heat, shock, vibration and corrosion.