Coolant filler neck assembly having integrated coolant overflow reservoir

A coolant filler neck assembly, comprising:

• a cylinder housing defining a coolant overflow reservoir;
• and
• a plurality of fluid conduits arranged internally in the coolant overflow reservoir, the plurality of fluid conduits including:
• a filler fluid conduit for fluidic communication with a cooling system,
• a first fluid conduit for fluidic communication with the filler fluid conduit,
• a second fluid conduit for fluidic communication with the first fluid conduit to direct overflow coolant to the coolant overflow reservoir, and
• a third fluid conduit for fluidic communication with the coolant overflow reservoir to direct the overflow coolant to an ambient environment.

A vehicle, comprising:

• a coolant filler neck assembly including:
• a cylinder housing defining a coolant overflow reservoir;
• and
• a plurality of fluid conduits arranged internally in the coolant overflow reservoir, the plurality of fluid conduits including a filler fluid conduit for fluidic communication with a cooling system, a first fluid conduit for fluidic communication with the filler fluid conduit, a second fluid conduit for fluidic communication with the first fluid conduit to direct overflow coolant to the coolant overflow reservoir, a third fluid conduit for fluidic communication with the coolant overflow reservoir to direct the overflow coolant to an ambient environment, and a fourth fluid conduit for fluidic communication with the third fluid conduit to direct overflow coolant from the third fluid conduit to the ambient environment.