Trucks recently built have been equipped with a 4-row flat tube radiator (AA-8005-AR). The addition of one row of tubes made it necessary to punch the mounting bolt holes in the radiator supports slightly off center to provide sufficient clearance between the end of the fan shaft and the rear side of the radiator core. This slightly increased the space between the front edge of the hood and the radiator shell. The increase is so slight, however, that it is in no way objectionable from an appearance standpoint.
The AA-8005-AR radiator is interchangeable with the former type radiator.