Ours come direct from Mazda and we are a trusted supplier to Many Rotary Specialists around the UK and Europe. Use of fake or cheap after-market coils can cause CAT failure, poor running and in extreme cases detonation or the coils melting. An important note, All coils are latest revision C coils as pictured however there may be a sticker saying N3H1-18-100B-9U stuck over the 100C sticker (you will still be able to see the 100C under it), this is due to Mazda Europe re-stickering it to work with there stock system. There may also be stock movement stickers stuck on some of the boxes. We have no control over this and it all depends on if the coils come direct via back order from Japan (no over sticker), or are in stock in Mazda Europe or Mazda UK when we order them in (they stick the second sticker on). Superceeds part numbers: N3H1-18-100B-9U N3H1-18-100B N3H1-18-100A N3H1-18-100.