NGK & Bosch from factory

[Deleted member CB]

Been servicing the 1150 tonight, even though it's a 2003, its the first time all plugs have been out together, suprised to see top ones were NGKs & lowers Bosch. Would have thought the factory would be supplied by one or the other.
NGK BKR 7 EKC , Bosch YR6LDE not important, but strange.