Beechcraft OEM Fresh Air Feed Plenum. Beech part #169-554006-9. This is the fresh air plenum under the side kickplates that fit the Beechcraft B19, B23, C23, and B24. Check your parts manual for your applicable type and serial number to verify fitment. This was removed from a Beechcraft C23 Sundowner. It has no visible cracks of any kind. Was purchased new from existing spare parts and used for only about a year before removal. Only blemish is the dirt which can be cleaned.