Engine Block Heater Removal/Installation - 2.3L

WARNING: This page is about a different car, the 2005 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.

Drain the cooling system. See ENGINE COOLANT REPLACEMENT - 2.3L .
Raise and support the vehicle. See LIFTING .

Fig 1: Disconnecting Block Heater Connector
Courtesy of MAZDA MOTORS CORP.
Disconnect the connector.

Fig 2: Removing Block Heater
Courtesy of MAZDA MOTORS CORP.
Remove the block heater.
NOTE:
- Do not loosen the screw more than necessary for removal.
1. Loosen the screw.
2. Twist and slide the block heater to release the retainer clip and discard the retainer clip.
3. Remove the block heater.
  
  Fig 3: Removing Retainer Clip - With Torque Specifications
  Courtesy of MAZDA MOTORS CORP.
To install, reverse the removal procedure.