Abstract: A cooling system for a water cooled internal combustion engine for a vehicle includes an engine body having a water jacket therein. The system comprises a radiator and a pump chamber. The pump chamber is in communication with the water jacket. A water pump creates a flow of water into the water jacket. A first main conduit has an end connected to the water jacket at the engine outlet and another end connected to the radiator. A second main conduit has an end connected to the radiator and another end connected to the pump chamber. A reservoir tank is arranged at a position more elevated than the radiator, and a supplementation conduit connects a bottom portion of the reservoir tank with an upper part of the pump chamber. A thermostat valve is arranged between the second main conduit and the pump chamber at a position upstream from a location where the supplementation conduit is connected to the pump chamber.

Abstract: A plastic cover comprising a pair of matable convex cover halves each having flanged projections, and fixtures which hold the corresponding opposite flanged projections of the two cover halves when the two cover halves are connected to each other, said fixtures each comprising an elastic clip of a leaf spring having bent free ends which hold the flanged projections therebetween and a center recess located between the free ends for enabling the free ends to be easily and elastically deformed when the clips are attached to the corresponding flanged projections.