Four Seasons HVAC Pressure Switch P/N:36670
Four Seasons 37322 switch for the 2012-2015 Freightliner 108SD and other vehicles is a system-mounted binary pressure switch that reads refrigerant pressure in the A/C system.
A failing switch can show up as weak cooling or an A/C compressor that will not engage. Before you replace the switch, rule out low refrigerant, a wiring fault and the compressor itself; a shop can test each of them.
This switch is a direct-fit replacement for the 2012-2015 Freightliner 114SD and the 2000-2015 Freightliner Columbia, among other Freightliner trucks. Open the "Vehicles it fits" section to check your exact model and engine.
Is this the right Columbia switch for a 2000-2015 Freightliner Columbia?
Yes. Four Seasons 37322 is a direct-fit replacement for the 2000-2015 Freightliner Columbia. Use the "Vehicles it fits" section to check your exact model and engine.
Will the 37322 work on a 2012-2015 Freightliner 114SD?
Yes. Four Seasons 37322 is a vehicle-specific switch that fits the 2012-2015 Freightliner 114SD.
Does the Four Seasons switch come with gaskets or o-rings?
Yes. This switch contains gaskets, o-rings or seals to replace it properly.
Is the 37322 switch zinc coated?
Yes. This switch is zinc coated to resist corrosion, and it is color coded for easy identification.
How can I tell if my A/C switch is going bad?
Weak cooling or a compressor that does not engage can be signs of a switch problem. A shop can test the switch and its circuit.
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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.