Review on Ignition Coil Pack Set of 6 - Compatible with Ford, Mercury, Mazda & Lincoln Vehicles - 3.5L, 3.7L V6 - Edge, F150, Explorer, Mustang, Taurus X, MKZ - Replaces OEM Numbers: 7T4E-12A375-EE, DG520, 7T4Z12029E, DG-520 by Rud Starks

Installed on v6 Mustang with 280,000 miles. The check engine light started flashing. I threw away the misfire codes in cylinder 6 but for such a price changing them all is a good idea. Put new spark plugs in and clear codes. No more stumbling under load. I can't speak for durability like an OEM but considering all 6 are the same as a factory igniter I'm sure it's worth it. Every kilometer is a wonderful kilometer for this Mustang. Mileage 500,000. Let's see.