| The conditions that exist in a working electrical current. A current that is unbroken, not open. | |
| A device attached to a mechanically driven cooling fan that allows the fan to freewheel when the engine is cold and the vehicle is driven at speed. | |
| A load-supporting axle that does not transmit power; an axle that does not rotate, but merely forms a base on which to attach the wheels. | |
| Automatic transmission fluid |