That’s on early versions. I think 2012-2014. After that they changed the spark plugs with increased gap. Anchorman’s part number is for latest models I reckon. I have two different workshop manuals, one is for 2012-, the other is 2012-2014 and on both there is PE01/PE02 as part number. On mcx5 online manual both PE02 and PE5R or PE5S
All the plugs versions for these engines end 18-110. The early versions - PE-01 and PE-02 have been superseded by later interchangeable versions PE-5S and PE-5R.
The only difference then is who made them PE-01 and the later PE-5R are made by NGK. PE-02 and the later PE-5S are made by Denso. Mazda no longer supply PE-01 or PE-02 although you might find old stock on ebay.
To help reassure you, I’ve attached a screenshot from the online LIVE parts list - this is current as of now. If I try to select either PE-01 or PE-02 it comes up with a supersession box. In this screenshot you can see all these part numbers including the associated manufacturers plug and you can see that our OP has indeed got the correct plug. He could have bought Denso FC20HPR8 and he would still be correct. He’s basically taken the early Denso plug out and put the later NGK plug in - thats absolutely OK. So let me show it another way;
Original version PE-01-18-110 (was NGK DILKAR7F8) is now PE-5R-18-110 (NGK ILKAR7L11)
Original version PE-02-18-110 (was Denso FC20HPR8) is now PE-5S-10-110 (Denso ZC20HPR11)
I would always fit the later version. All these modern iridium plugs are going to wider gaps to improve performance and in the later part numbers, both NGK and Denso show the factory set gap in the part number - so the last two digits - 11 equals 1.1mm. Here is that screen shot with the supersession;