This was a cheapie ebay special that had only done 500km on trailing 1 plug while waiting for my new style BHR coils to arrive. Although the coils did run the car and was driveable, obviously poor quality. I got a useless repacement set of coils, then a full refund. Seller was good about this but as everyone says, dont waste your time or money on the cheap stuff. These came with a 2 year warranty. They only lasted 2 weeks.