Four Seasons A/C Orifice Tube P/N:38640
The Four Seasons 38904 a/c orifice tube for the 1991-2010 Ford Explorer and other vehicles is a Severe Temp automatic adjusting design that meters refrigerant flow into the evaporator.
Weak cooling at idle, in slow traffic or on hot days can mean the orifice tube is worn or restricted. Before you replace it, rule out a low refrigerant charge, a tired compressor and a blocked condenser, which can leave the cabin just as warm; a shop can test the system.
It also fits the 1980-2008 Ford F-150 and the 1982-2009 Ford Mustang, among many others, and each vehicle takes one. If your vehicle isn't named here, look up its year, make and model in the "Vehicles it fits" section.
Fit and size
Build and materials
In the box: one orifice tube with the O-rings and gaskets needed to seal high pressure from low pressure.
Does the Four Seasons 38904 orifice tube fit a 1991-2010 Ford Explorer?
Yes. The Four Seasons 38904 fits the 1991-2010 Ford Explorer and takes one per vehicle. The same part number also fits the 1980-2008 Ford F-150.
What comes with the Four Seasons 38904 orifice tube besides the tube itself?
The Four Seasons 38904 contains the O-rings and gaskets needed to seal high pressure from low pressure. The listing is for one orifice tube.
Is this automatic adjusting orifice tube compatible with R12 and R134?
Yes. It is a drop-in replacement for the OE standard fixed orifice tube and is compatible with R12 and R134, with no modification required to the A/C system.
Does the 38904 orifice tube take load off the A/C compressor?
Yes. This Severe Temp orifice tube is designed to reduce compressor load, which helps extend compressor life, improve fuel economy and lower emissions.
Is the Four Seasons 38904 orifice tube listed for a front or rear position?
The Four Seasons 38904 is listed for both front and rear positions, and each application takes one orifice tube.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.