For 1990-2009 cars

### Removal Procedure

1. Drain the cooling system. Refer to Cooling System Draining and Filling .

Important: A residual amount of coolant will drain from engine block.

2. Disconnect the coolant heater power supply cord from the coolant heater.
3. Remove the coolant heater and seal from the engine block.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

1. Install the seal to the coolant heater.
2. Install the coolant heater in to the engine block.

Tighten
Tighten the coolant heater to 60 N·m (44 lb ft).

3. Connect the coolant heater power supply cord to the coolant heater.
4. Fill the cooling system. Refer to Cooling System Draining and Filling .