Cummins Engine Company, Inc.

Jonathan L Umsted

Lawrence P Tracy

Michael W Alstrin

Bryan E Hansome

Norman L Jones

A vented, unitary sealing grommet for establishing a first liquid-tight interface between a ignition coil and a spark plug adapter tube and a second liquid-tight interface between the ignition coil and a valve cover includes a hollow main body portion having a substantially cylindrical shape with a longitudinal axis and including a pair of annular sealing ribs, a planar flange portion which is disposed within a geometric plane which is substantially perpendicular to the longitudinal axis, the main body portion being designed to fit between the ignition coil and the spark plug adapter tube such that the annular sealing ribs are compressed due to the interference fit. The planar flange portion is designed to fit between ignition coil and the valve cover. The vented capability is created in the sealing grommet by means of a pair of oppositely disposed vent channels defined by the inside surface of the main body portion and in cooperation therewith by means of a pair of oppositely disposed second vent channels defined by an upper surface of the planar flange portion, each vent channel defined by the main body portion is in flow communication with a corresponding vent channel defined by the upper surface. The main body portion includes two relief notches which serve to keep the vent channels in the main body portion open.

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Columbus, IN, United States of America

Jonathan L Umsted