| And automotive terminology, the main part of a heat exchanger, such as a radiator, evaporator or heater. Usually made of tubes, surrounded by cooling fans, used to transfer heat from the coolant to the air. | |
| The large in the connecting rod that connects to the drive shaft. | |
| The plain bearing shells located in the big end of the connecting rod that support the connecting rod piston on the crankshaft. | |
| The inner materials usually fiberglass or steel running through the piles that produce strength in a tire. |