Abstract: A method of installing an engine block heater includes the provision of an O-ring carried by the cylindrical body of the heater. The heater also includes a flange portion with a passage therein. The engine block wall is provided with a threaded opening located adjacent to the typically found aperture in the engine block. The heater can be easily installed by aligning the passage in the heater flange with the opening in the engine block and then inserting the body into the aperture such that the O-ring seal engages the aperture wall to provide a sealing engagement therebetween. The heater can be secured by way of a fastener passing through the flange passage which is threaded into the engine block opening.

Abstract: It is difficult if not impossible to install conventional engine block heaters robotically. The present device includes a cylindrical body with a heater element extending upon one side thereof and operatively connected to terminals on the other side thereof with a sealing o-ring around the body portion for sealing engagement with a cylindrical aperture formed in the engine block wall. A retainer ring surrounds the outer end of the body portion having at least one of standing portion formed thereon with an aperture formed therethrough and a corresponding screw-threaded aperture is formed in the wall of the block to one side of the aperture into which the heater engages.