quality parts. I endorse the advice of reviewer R. Hooper. I would add a suggestion to purchase a new Woodruff key (a piece of metal that inserts into the transmission mechanism to hold it in place) from your local Mazda dealer. Mazda offers to replace it when servicing the timing, and it only costs about $5. Although the timing belt repair manual I've read states that the tension spring may be the wrong length, this was the case on my '94. With NB or 1.6 it may be different. l cars so check it out. It doesn't move unless you change the belt, so technically it doesn't need to be replaced anyway. I still swapped my old one for a new one from the kit because it fit.