HomeHVAC > A/C Flow RestrictorsFour Seasons 38640 A/C Orifice Tube - Rear
Part #: 38640

Four Seasons 38640 A/C Orifice Tube - Rear

Orifice Tube, Rear
12 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Orifice Tube, Rear
Fitment: Ford, Aerostar
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Overview of Four Seasons Orifice Tube 38640 for Ford Aerostar

The Four Seasons Orifice Tube 38640 is designed specifically for the Ford Aerostar to regulate refrigerant flow in the vehicle's A/C system. This brown-colored A/C orifice tube ensures precise expansion and optimal performance of your HVAC system.

  • Part Number: 38640
  • Brand: Four Seasons
  • Brand Line: Orifice Tube
  • Color: Brown
  • Orifice Diameter: 0.047 inches (1.196 to 0.254 mm)
  • Style: Standard
  • Pack Quantity: 1
  • Compatible with Ford Aerostar models

Details on Four Seasons Orifice Tube Product Line

The Four Seasons Orifice Tube product line focuses on providing reliable expansion devices for automotive A/C systems. These orifice tubes are engineered to maintain consistent refrigerant flow, which is critical for efficient cooling and system longevity. The 38640 model fits within this line as a standard style orifice tube, designed to meet the specific requirements of the Ford Aerostar's HVAC system.

Technical Description and Specifications

This A/C orifice tube features a precise orifice diameter of 0.047 inches, allowing controlled refrigerant expansion within the air conditioning system. The brown color coding helps with easy identification during installation or maintenance. The orifice tube is a critical component that regulates refrigerant flow, ensuring the evaporator receives the correct amount of refrigerant for optimal cooling performance. The Four Seasons 38640 is packaged individually and is designed to fit Ford Aerostar models, providing a direct replacement for the original equipment.

Common Applications and Issues Addressed

  • Regulates refrigerant flow in Ford Aerostar A/C systems
  • Prevents inefficient cooling caused by improper refrigerant expansion
  • Helps avoid compressor damage due to refrigerant flow irregularities
  • Addresses A/C system performance issues related to clogged or damaged orifice tubes
  • Supports consistent cabin temperature control

Installation Notes and Tips

When installing the Four Seasons Orifice Tube 38640, ensure the system is properly evacuated and free of contaminants. The orifice tube should be installed in the correct orientation as specified by the vehicle manufacturer. It is recommended to inspect the A/C system for debris or damage before installation to prevent premature failure. For climates above 105°F, consider the optional part number 38902 as noted in the product footnote.

Quality Assurance and Warranty

Four Seasons provides quality-tested HVAC components designed to meet or exceed OEM specifications. The Orifice Tube 38640 undergoes rigorous manufacturing standards to ensure durability and reliable performance in Ford Aerostar vehicles. Warranty details are available through Four Seasons and typically cover defects in material and workmanship under normal use.

BrandFour Seasons
Part Number38640
PositionOrifice Tube, Rear
ColorBrown
DescriptionExpansion Devices
Orifice Dia. IN0.047
Orifice Dia. MM1.196 to 0.254
Pack in Qty of1
Printed Foot NoteOptional AAOT Part No. [38902], For climates above 105° use (Severe Duty) AAOT [38904]
StyleStandard
TypeOrifice Tubes

This part fits 12 vehicles. Search below:

YearMakeModelPositionNotes
1997FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1996FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1995FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1994FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1993FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1992FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1991FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1990FordAerostarRearAutomatic adjusting A/C Orifice Tube recommended for temperatures under 105°F.; Orifice Tube
1989FordAerostarRearw/ Factory Air; Optional Automatic Adjusting Orifice Tube For Normal Climates Under 105 Degrees; Orifice Tube
1988FordAerostarRearw/ Factory Air; Optional Automatic Adjusting Orifice Tube For Normal Climates Under 105 Degrees; Orifice Tube
1987FordAerostarRearw/ Factory Air; Optional Automatic Adjusting Orifice Tube For Normal Climates Under 105 Degrees; Orifice Tube
1986FordAerostarRearw/ Factory Air; Optional Automatic Adjusting Orifice Tube For Normal Climates Under 105 Degrees; Orifice Tube

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

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

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.