How to remove and install the A/C Orifice Tube in the air conditioning system on Mercury Mountaineer?

Have the air conditioning system discharged by a dealer service department or an automotive air conditioning shop before proceeding. Disconnect the fitting in the refrigerant line from the condenser to the evaporator. Use an open-end wrench on the stationary fitting and a flare nut wrench to avoid rounding off the tube nut. Remove the orifice tube from the line with a pair of needle-nose pliers. If it's stuck or breaks off, special extractor tools are available at most auto parts stores. Installation is the reverse of removal. Be sure to remove and discard the old O-rings. Take the vehicle back to the shop that discharged it. Have the system evacuated, recharged and leak tested.

Genuine Mercury Mountaineer A/C Orifice Tube

A/C Hose

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

4 A/C Orifice Tubes found

View related parts
Mercury Mountaineer Air Conditioner
Part Number: XC4Z-19D990-AA
$5.04 MSRP: $8.16
You Save: $3.12 (39%)
ADD TO CART
Product Specifications
- Other Name: Orifice
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Restrictor
Part Number: F5UZ-19D990-AB
$5.52 MSRP: $9.00
You Save: $3.48 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Orifice
- Replaces: F5UZ-19D990-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2010 Mercury Mountaineer | 6 Cyl 4.0L, 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L, 8 Cyl 4.6L Romeo SOHC EFI, 8 Cyl 5.0L | 4AT 4R70W, 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 5AT 5R55E, 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Seal Special
Part Number: F5UZ-19D990-AA
$5.52 MSRP: $9.00
You Save: $3.48 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Seal - Special
- Replaced by: F5UZ-19D990-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | 6 Cyl 4.0L, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E
View related parts
Mercury Mountaineer Seal Special
Part Number: F5XZ-19D990-AA
$5.20 MSRP: $8.42
You Save: $3.22 (39%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Seal - Special
- Replaced by: F5XZ-19D990-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | 6 Cyl 4.0L, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E

Mercury Mountaineer A/C Orifice Tube

Mercury Mountaineer A/C Orifice Tube regulates refrigerant flow between the high pressure discharge side and the low pressure suction side so the cabin receives steady, cool air. Acting as a fixed metering device, the A/C Orifice Tube forces liquid refrigerant through a narrow passage, prompting the compressor to cycle on or off and keeping system pressure balanced. The fine mesh inside the Mountaineer A/C Orifice Tube traps grit and metal flakes that could clog passages and raise temperatures. Unlike an adjustable expansion valve, this A/C Orifice Tube has no moving parts, relying on a precisely sized bore, and every Mountaineer generation uses this same straightforward style so drivers do not face multiple designs. When the part becomes gummed up or worn, a Mercury owner may notice weak cooling at idle, uneven gauge readings, or evaporator icing. Keeping the A/C Orifice Tube clean or installing a fresh one safeguards the entire Mercury climate loop and lets a Mountaineer stay chill even when a later Mercury Mountaineer is stuck in traffic.

We provide a wide range of Mercury Mountaineer A/C Orifice Tube at the optimal prices. If you need Mercury Mountaineer A/C Orifice Tube, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Mercury Mountaineer A/C Orifice Tube Parts Questions & Experts Answers

Restrictor
F5UZ-19D990-AB
Q: How to remove and install the A/C Orifice Tube in the air conditioning system on Mercury Mountaineer?
A:
Have the air conditioning system discharged by a dealer service department or an automotive air conditioning shop before proceeding. Disconnect the fitting in the refrigerant line from the condenser to the evaporator. Use an open-end wrench on the stationary fitting and a flare nut wrench to avoid rounding off the tube nut. Remove the orifice tube from the line with a pair of needle-nose pliers. If it's stuck or breaks off, special extractor tools are available at most auto parts stores. Installation is the reverse of removal. Be sure to remove and discard the old O-rings. Take the vehicle back to the shop that discharged it. Have the system evacuated, recharged and leak tested.