Removal and Installation

Drain the engine coolant.

Fig 1: Disconnecting/Connecting Heater Hoses From The Heater Core
Courtesy of MAZDA MOTORS CORP.
Disconnect the heater hoses from the heater core.

Fig 2: Disconnecting/Connecting Heater Outlet Hose From The Water Hose Connection
Courtesy of MAZDA MOTORS CORP.
Disconnect the heater outlet hose from the water hose connection.

Fig 3: Disconnecting/Connecting Heater Hose Connection From The Engine
Courtesy of MAZDA MOTORS CORP.
Disconnect the heater hose connection from the engine.
Remove the heater hose from the engine compartment.

Fig 4: Disconnecting/Connecting Heater Hoses From The Heater Hose Junction
Courtesy of MAZDA MOTORS CORP.
Disconnect the heater hoses from the heater hose junction.
To install, reverse the removal procedure.