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Interaction in distributed component based software-rchitectures can become a rather complex and error prone is-ue. As it is good practice to keep application concerns separated rom infrastructural ones, component based applications typi-ally rely on communication middleware to cope with matters f distribution and heterogeneity. Unfortunately, generic mid-leware tends to be monolithic, heavyweight software, which is nacceptable in resource constrained embedded systems. Com-unication middleware for distributed embedded systems has o be custom tailored to the application’s interaction needs and herefore shall be as lightweight as possible. By applying the omponent paradigm to the communication middleware, a prac-ical methodology can be defined, that allows the middleware’s utomatic generation from the application’s architectural models nd structural designs of explicit component connectors with a ell defined set of prefabricated basic building blocks—so called ommunication primitives. This paper contributes by specify-ng the most common structural designs for explicit connectors ithin the automotive domain and thereby, in addition identifies set of classes of automotive communication primitives. Thus his paper provides the sound foundation for automatic, model riven middleware synthesis by specifying all necessary basic odules.