Genuine Ford AA5Z-19E616-C HVAC Blend Door Actuator | Explorer, Taurus, Flex, MKS

Genuine Ford AA5Z-19E616-C HVAC Blend Door (Temperature) Actuator

Hearing a rapid clicking or ticking noise behind the glove box when you start the car or change the temperature? Air blowing hot when you ask for cold — or stuck on one temperature no matter what you set? On the Ford Explorer, Taurus, Flex, and their Lincoln siblings, that is the classic sign of a failed blend door actuator.

The genuine Ford AA5Z-19E616-C is the HVAC blend door (temperature) actuator — the small electric motor that moves the door mixing hot and cold air inside the heater box. Ford's catalog lists it as a "Motor Assembly / Door Actuator," and some listings call it an "A/C Motor Assembly," but note: this is not the blower (fan) motor. It is the temperature door actuator, located behind the glove box on top of the HVAC housing, held by 3 screws.

OEM Part Numbers

• AA5Z-19E616-C
• AA5Z19E616C

Replaces (superseded numbers): 8G1Z-19E616-B · 8G1Z-19E616-C · AA5Z-19E616-B · Motorcraft YH-1778. The current Motorcraft packaging of the same unit is YH-1779.

Cross Reference

• MOTORCRAFT YH-1779
• DORMAN 604-234
• FOUR SEASONS 73198
• GPD 1712296
• SKP SK604234

Common Symptoms of a Failed Blend Door Actuator

• Clicking or ticking noise behind the glove box at ignition on or when changing temperature
• Air blows the wrong temperature — hot when set to cold, or the reverse
• Temperature "stuck" and does not respond to the dial
• On dual-zone systems, one side stuck hot or cold

Product Highlights

• ✔ Genuine Ford part — the same actuator your dealer installs
• ✔ Cures the well-known clicking-behind-the-glovebox complaint on Explorer, Taurus, and Flex
• ✔ Same unit as Motorcraft YH-1779
• ✔ Accessible location: behind the glove box, on top of the heater box, 3 screws
• ✔ Typical DIY repair in 1–2 hours with basic hand tools

Condition

New Genuine Ford OEM Part

Product Type

HVAC Blend Door (Temperature) Actuator

Function

The blend door actuator is an electric rotary motor that positions the temperature blend door inside the HVAC housing, controlling the mix of heated and cooled air delivered to the vents. When the actuator's internal gears wear or strip, it clicks against the stop and the system loses control of air temperature. Replacing the actuator restores normal temperature control.

Compatible Vehicles

Ford

• Taurus 2008–2019
• Taurus X 2008–2009
• Explorer 2011–2019
• Flex 2009–2019
• Police Interceptor Sedan / Utility 2013–2019

Lincoln

• MKS 2009–2016
• MKT 2010–2019

Mercury

• Sable 2008–2009

Important: Please verify fitment with your VIN before ordering.

Package Contents

• 1 × Genuine Ford AA5Z-19E616-C HVAC Blend Door Actuator

Technical Specifications

Brand	Ford
Manufacturer	Ford Motor Company
Part Number	AA5Z-19E616-C
Alternate Part Number	AA5Z19E616C
Replaces	8G1Z-19E616-B / 8G1Z-19E616-C / AA5Z-19E616-B / Motorcraft YH-1778
Motorcraft Equivalent	YH-1779
Seller SKU	ford_AA5Z19E616C
Product Type	HVAC Blend Door (Temperature) Actuator
Design	Plastic rotary electric actuator
Dimensions (approx.)	3.25 × 2.25 in, 3 mounting holes, 5-pin connector
Location	Behind glove box, top of HVAC housing (3 screws)
Condition	New

Warranty

Manufacturer warranty may vary by supplier, seller, and region. Please contact us before purchase if warranty confirmation is required.

Installation Video

▶ 2015 Ford Explorer Blend Door Fix — Fix or Fab

FAQ

Is this the blower (fan) motor?

No. Despite the catalog name "A/C Motor Assembly," this is the blend door actuator — the small motor that controls air temperature, not the fan that blows air. If your fan does not spin, you need a blower motor instead.

My old part is stamped 8G1Z-19E616-B or AA5Z-19E616-B — is this the right one?

Yes. AA5Z-19E616-C is Ford's current replacement for 8G1Z-19E616-B, 8G1Z-19E616-C, and AA5Z-19E616-B.

Will this fix the clicking noise behind my glove box?

A stripped blend door actuator is the classic cause of that clicking/ticking on Explorer, Taurus, and Flex. If the noise comes from that area and temperature control misbehaves, this actuator is the common repair.

Is this the same as Motorcraft YH-1779?

Yes. YH-1779 is the Motorcraft-brand packaging of the same Ford unit.

How hard is the installation?

It sits behind the glove box on top of the heater box, held by 3 screws. A typical DIY job takes 1–2 hours with basic hand tools.