Review on 🔥 SCITOO Ignition Coil Set for Scion xA/xB, Toyota Echo/Prius/Prius C/Yaris (2000-2019) | 100% New, OE-Compatible | UF316 5C1293 by Fort Steffen

Initially the misfire problem was fixed and they all ran for about 10 minutes then one after another they began to fail giving P035X coil trouble codes and the engine would not start until I replaced the old coils. The longest of them lasted less than 10 miles. When removing the old coils I found some moisture in the spark plug holes and blew them out with compressed air. After all those coils failed and I was forced to put the old coils in, still no misfires. The main reason was the seam between the two parts of the case, which allows water to flow around the coils and into the holes. There is TSB #EG063-05 on the subject which states that sealant should be applied to this seam to keep water out. But if your coils are really bad I'd go to OEM Denso instead. I've had good luck with another aftermarket coil for another Toyota, but not this one.