VXOC Astra-J/GTC

Hi,
I've been having a few engine hiccups with my Astra J 1.4T.
I have replaced the coil pack as I heard the  original was prone to causing problems.
Anyway today I took the spark plugs out to take a look and was surprised to find these.
They are labelled as GM Champion RC10MCC R6
They were fitted by a main dealer in January 2016 as part of the service.
Does anyone recognise these as being the correct type?
Have they fitted the wrong type?
I thought they were supposed to be IFR7X-7G, GM 5557026.
Thanks for your help!

they did use gm stamped champion plugs but they were changed for ngk at some point
think they should be 55576026 but that may depend on year of manufacture
rusty may check for you

(6:th-Jul-2016, 22:07:48)tucpal Wrote: [ -> ]they did use gm stamped champion plugs but they were changed for ngk at some point
think they should be 55576026 but that may depend on year of manufacture
rusty may check for you

Thanks for the info.
Just a bit concerned they're not the right ones.
Think I'll fit the correct set.