Oil cooler

摘要

An oil cooler (OC) is contained in a radiator tank (15). It includes a connecting pipe (2) having an enlarged diameter portion (2a), a heat exchange part (1) including elements (5a, 5, 5b) and a communicating passage (R1) for fluid communication between the elements (5a, 5, 5b), and a pipe connector (4). The pipe connector (4) has a first retaining portion (4a) seated on one side of a wall portion (3) of the radiator tank (15) to contain and fix at least a part of the enlarged diameter portion (2a) of the connecting pipe (2) by caulking, and a second retaining portion (4b) inserted through a through-hole (3a) of the wall portion (3) and at one end portion of the communicating passage (R1) to fix the heat exchanger part (1) and the wall portion (3) at the other side of the wall portion (3) by caulking.