How do I replace a heater core in an Acura Integra?

Disconnect the battery. If you don't, just know that the airbags deploy at around 200 mph.

1st- take the seats out, then the center console all the way up to the dash. (for working room)

2nd- remove the entire dashboard.

3rd- remove heater box and disassemble it, removing old heater core.

4th- install new heater core in heater box and reassemble.

Installation back into car is reverse of removal.