An oil cooler (1) is removably mounted on the side of an engine block (13) with a tubular coolant flow coupling (19) received as a push-fit in an aperture (18) in the block so that the coolant flow connection is simply made as the oil cooler is fastened to the side of the block. The coupling (19) may...http://www.google.es/patents/US4793302?utm_source=gb-gplus-sharePatente US4793302 - Engine cooling system
