rusefi.com

UK, RO and US only have lame SKYACTIV-G engine

FR and LV and maybe some other markets offer fancy SKYACTIV-X engine which is supposed to have cylinder pressure sensor.

Question: who speaks what language to call what Mazda dealer to figure out cylinder pressure sensor part number please?

Made by Citizen?
https://cfd.citizen.co.jp/english/sensor/on_board2

Someone sells a kit with it for 600 gbp, but that must include some other stuff.
https://bdn-automotive.com/products/pressure-sensors
(scroll way down and select SkyActiv-X on the left side. Their comments on why not to use Beru's glow plugs on gas cars is interesting.)

This does seem more difficult to find out than it should be in the age of the internet....

Removal instructions: https://mazdamanuals.com.au/wsm-secure/WSM/D9N5-1A-21J_Ver7/esicont/srvc/html/id0140hf645400.html
Still not seeing a part number...