A connector is disclosed for use in automotive applications, which has improved retention capabilities. The connector includes a body portion that supports an array of conductive terminals. An outer housing is molded over the body portion and the terminal termination area to form an exterior protective housing of the connector. The protective housing of the connector is provided with a pair of engagement arms formed on the exterior of the protective housing. The arms are connected to the housing at their opposite ends and are formed with an intervening space between them and the housing. The space is configured to provide an outward bias force on the engagement arms such that when the connector is inserted into a receiving frame, the engagement arms are biased outwardly to press against sidewalls of the receiving frame and retain the connector in place therein without the need for additional latches or O-rings.