Part Type: HVAC Heater Core. Aluminum Heater Core. Heater Core. Style: Aluminum Heater Core. Type: Heater Core /Aluminum. 2007 Mazda 3 Engine: 2.0L L4; Except Cold Specification; From 6/22/07;. 2007 Mazda 3 Submodel: S; Engine: 2.3L L4; Except Cold Specification; From 6/22/07;.
