I’m looking for either the complete Wheelset or just the nylon gears for both axels to a G scale 0-4-0 LGB Helena logomotive.

I bought a wheelset from Marklin (with black gears in pics below) but the gear pitch does not fit .
obviously it was the wrong part number

can anyone point me in the right direction, or at least know the part number I need to look for?

thanks - any help appreciated.