I am buying a reman distributor for my 2.5L and they have two sizes the for the rotor cam, .526" and .475". I need to know which size I need to get. Thanks.

 

i think you should take your old one to wherever you are getting it from, and have them match it. mazda epc shows only 1 part number for a distributor, and 1 part number for a rotor. there is an older part number, but it has been superseeded to the newer number. sounds like you are getting it from a "one fits all" place, probably an older one fits a probe, or 626, or something like that. remember, it might be the cheapest one out there, but if it dont work properly, you will end up paying more than a new one from mazda.

 

Thanks. They actually do have new disty for my car but i was hoping to get a reman one. The new ones they have are actual OEM parts. I wish they had reman OEM oh well. What hapens if I do get a different sized rotor cam, assuming both are not the right size?

 

oh and what is the difference between grooved rotor and not grooved?