lower. PartQualifier: dash panel lower. Seal. Heater Core Case Seal. HVAC Case Seal. HVAC Heater Core Seal. Instrument Panel Air Duct Seal. TO Dash Panel. AC and Amplifier; Assembly. Door. Gasket. Housing Assembly. HVAC Case. HVAC Core. Instrument Panel Air Duct. Included with: Heater Assembly.