1. Can use same size
2. Never use
3. I`m using iridium K20 and K22. Iriway plug no 7 & 8
NGK BKR6E-11 & NGK PZFR6F-11
The most important stated "R" ........ for "taip R" . Hehehe. "R" meaning High Resistance Rod for Plug.
NGK BKR6E-11 my Waja is using this plug.
NGK PZFR6F-11 is usual plug selling at spare part shop honda but both can use at our car.
I seee... thank U bros for that info...
