Convenient Cooling System Filling: The thermostat housing intake manifold filler neck allows you to conveniently fill your cooling system at the intake manifold when your radiator is positioned lower than the intake, ensuring easy access and efficient coolant filling., Versatile Design for Double Pass Radiators: This filler neck can be flipped to accommodate both right or left side upper hoses, making it a perfect choice for double pass radiators or other configurations., Multiple Threaded Holes for Water Bypass and Sending Units: The back of the neck features two 1/4" NPT and one 1/2" NPT threaded holes, allowing you to install water bypass lines or temperature sending units as needed for your specific cooling setup., Compatible with Standard Radiator Caps: This intake manifold filler nec.
