What is the lifespan of a coil pack?
Average lifetime of ignition coil is around 100,000 miles or more. It is not an easy worn out replacement car part but still could fail for variety of reasons. via
How can you tell a fake DENSO ignition coil?
The official Denso replacement has sticker with the part number on the square insulator top. It would be helpful to see an example of a new in the box Toyota coil purchased from the dealer, not ebay. via
How can you tell which coil pack is bad? (video)
What do ignition coils do?
The purpose of an ignition coil is to convert the low current from a car battery into enough power to ignite the fuel and start the engine. When there is a problem with an ignition coil, it will cause a range of mechanical and performance issues. via
Is DENSO an aftermarket?
In addition, DENSO Solutions will become the global headquarters for DENSO's aftermarket operations. As part of this, DENSO will make efforts to improve its ability to quickly propose solutions that meet local needs, both in the Japanese and overseas markets. via