That is the cowl latch.
Check out the salvage yards listed in the FAQs or post a wanted ad on the webvertize of the aomci.org
Salvage yard will likely be your best bet, or even try ebay. Most guys wont want to rip apart a cowl to remove the latch, unless the cowl is parted out already. What is your model/serial number? Ill post the part number to search with, although it is likely 277232.
I dont want to assume that the pic posted is the same model as the one you have though.