Review on AUTOSAVER88 Ignition Coil 6-Pack for Enhanced Performance with Ford F150, Edge, Flex, Explorer, Fusion, Mustang, and Taurus - Lincoln MKS, MKT, MKK, MKZ - Mazda 6, CX-9, and Mercury Sable V6 3.7L 3.5L by Josh Tadder

As this is not an OE coil set I don't have high hopes for durability. I knew this was going to happen as I didn't have $425 to replace a top quality six set. The front triple on my engine is very easy to swap out as there is full access. The rear three are much more difficult, requiring the removal of the air intake, throttle body and various hoses. I bought the exact same set for another car over two years ago and it took a little over two years before misfiring. If you don't keep your machine for long or are on a budget they will fit in a pinch and provide good performance for several years.