Dealer maintenance history question (plugs and coils).
 

Looking through the stack of history service records of my RX8, I found one service that interested me. Seems like they put in new coils and spark plugs at some point but I cant seem to confirm that they did all four for trailing and leading.

Here is the description:

Installed 0000-18-N3Y1: Spark Plug, Trailing (Qty: 2)
Installed N2Z4-18-110: Spark Plug (Qty: 2)
Installed N3H1-18-100A-9U: Ignition, Coil (Qty: 4)
INSTALLED NEW SPARK PLUGS, BATTERY, AND IGNITION COILS
START ANDRCHECK==OKAY
PROGRAM PCM WITH LATEST UPDATED FILES

Clearly says four ignition coils, but I am not sure if the other spark plug means the leading. I searched the part number and nothing came up.


There is also a sticker on my driver side door panel. I searched and this seems to be the reflash recall:

Mazda Authorized Modifications
These modifications have been approved, as appropriate by the EPA and CARB
The following modifications have been made:
N3z2-18881-r
7-21-05

how long have you owned the car?

A year and a month :) . I know at least two of the spark plugs and coils have been replaced but never looked into the records thoroughly since there is literally an inch thick stack of receipts on services. I also plan on doing the spark plugs, wires, and coils. This is just for curiosity sake.

That's all 4 coils and plugs.....