Orifice tubes control the flow of liquid refrigerant, as well as filtering it, before it enters the evaporator. Depending on the environment your vehicle operates in, you may want a heavier duty orifice tube to compensate for high ambient temperatures.
Determining whether or not your orifice tube requires replacement should be done by an automotive professional. As with any AC system component, replacing the orifice tube may be required to honor warranties on AC compressors when they are replaced.
We have a good selection of orifice tubes from the following vendors: