New # substitutes the old # so the application list is the same. Basically it fits all the larger engines. Their is a smaller one that fits the Corollas, Celicas, Echo, Matrix etc. I also believe there is a seperate larger one for the Tundra. I kinda like the old one better myself. The new one doesn't like to come of easily if you do the old 3/4s of a turn past contact. I've had to cut it down to 1/4 of a turn so that I ever have a chance of getting it off. The can is also fractionally smaller as well, and the end cap wrench is down a size or two from the old one.