Engine Block Heater: Description and Operation

Coolant Heater
The optional engine coolant heater (RPO K05 [Heater Engine Block]) operates using 110-volt AC external power and is designed to warm the coolant in the engine block area for improved starting in very cold weather 29°C (20°F). The coolant heater helps reduce fuel consumption when a cold engine is warming up. The unit is equipped with a detachable AC power cord A weather shield on the cord is provided to protect the plug when not in use.