RAM 3500 Truck 4WD V8-5.7L VIN D (2003)
Engine Block Heater: Description and Operation
ENGINE BLOCK HEATER
DESCRIPTION
WARNING: DO NOT OPERATE ENGINE UNLESS BLOCK HEATER CORD HAS BEEN DISCONNECTED FROM POWER SOURCE
AND SECURED IN PLACE. THE POWER CORD MUST BE SECURED IN ITS RETAINING CLIPS AND ROUTED AWAY FROM
EXHAUST MANIFOLDS AND MOVING PARTS.
An optional engine block heater is available with all models. The heater is equipped with a power cord. The cord is attached to an engine compartment
component with tie-straps. The heater warms the engine providing easier engine starting and faster warm-up in low temperatures. The heater is
mounted in a core hole of the engine cylinder block in place of a freeze plug with the heating element immersed in engine coolant. The 5.9L gas
powered engine has the block heater located on the right side of engine next to the oil filter (Fig. 6). The 3.7L/4.7L gas powered engines have the
block heater located to the rear on the right side of the engine (Fig. 7). The 5.7 L engine has the block heater located on the left side of the engine
