Four Seasons HVAC Blend Door P/N:73479
Four Seasons 73490 blend door for the 1999-2018 Ford E-350 Super Duty and other vehicles mixes hot and cold air to set the cabin temperature.
When a blend door sticks or its motor or gears wear, the cabin can stay stuck on one temperature, or you may hear clicking from behind the dash. These signs alone do not prove the door is at fault; a blown fuse can produce similar symptoms.
The 1999-2018 Ford E-350 Super Duty, the 2003-2018 Ford E-450 Super Duty and the 2002-2014 Ford E-150 all take this blend door, along with many other vehicles. It meets or exceeds OE specifications for fit and function. Open the "Vehicles it fits" section to check your exact model and engine. A 1999-2018 Ford E-350 Super Duty takes one.
Fit and size
Build and materials
One blend door kit. Contents include a lever arm, gear, cam gear hardware and linkage, as applicable.
Interchange: 902203 · BDDE1004 · 921501 · 4C2Z18476AA · F7UZ18478BA · F7UZ18478CA · F7UZ18478CB · F7UZ18B545AB · F7UZ18B545AD · F8UZ18478BA · LC2Z18478A · XC2Z18478BA · 1711926 · DA1368 · A60490 · MT18912
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Will the Four Seasons 73490 blend door fit a 1999-2018 Ford E-350 Super Duty?
Yes. Four Seasons 73490 fits the 1999-2018 Ford E-350 Super Duty. For other models and engines, open the "Vehicles it fits" section.
What parts come with the Four Seasons 73490 blend door kit?
The kit includes a lever arm, gear, cam gear hardware and linkage, as applicable to the vehicle. Four Seasons 73490 is sold as one kit.
How big is this plastic blend door kit?
This blend door measures 212.7 mm long and 184.15 mm wide. The door assembly is made of plastic.
Why is my HVAC blend door clicking behind the dash?
A tick or click behind the dash, or air stuck at one temperature, can mean the door's gears or motor are worn. A shop can test the system before you replace the door.
Does Four Seasons 73490 replace Ford number F7UZ18478BA?
Yes. F7UZ18478BA is one of the cross-reference numbers listed for Four Seasons 73490, along with other Ford and aftermarket numbers.
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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.