Wanted Honda GXV140 cylinder head

[seandil]

Hi,
A piece of metal chipped off around my spark plug hole and I need to replace the cylinder head on my Honda HR 215 K1 HXA self propelled lawnmower. The plug hole potrudes from the head and goes into the cylinder at an angle of sorts, so it is not flush with the head. Some of the thread for the spark plug hole was within the chipped piece.
My engine serial number is GJAB 6555794. A number I found on the cylinder head itself is ZG9HM-7. Anything comparable would be appreciated as well. The engine in this mower is a GXV 140 but I am unsure of exactly which one. Please let me know and thanks.