Abstract: Device for feeding oil from the lubricating oil system of an internal combustion engine to units mountable on a unit support plate which is secured to the engine block. On one surface of the unit support plate facing out from the engine block there are one or more oil distribution ducts incorporated in the support plate, each of which connects to the lubricating oil system of the engine at the block to at least one associated mounted unit. Each duct is defined by a groove in the support plate surface outward from the engine block. Each groove is covered on the surface of the support plate by a cover plate secured in the unit support plate. Each duct groove has its associated cover plate preferably secured in the unit support plate by shape and/or friction.