HomeHVAC > Hoses and PipesFour Seasons 66544 A/C Refrigerant Liquid Hose
Part #: 66544

Four Seasons 66544 A/C Refrigerant Liquid Hose

Hose Assembly
6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: Ford, Fiesta and Fiesta Ikon
Easy Returns — Return within 60 days for a full refund
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Overview of Four Seasons Hose Assembly 66544

The Four Seasons Hose Assembly 66544 is designed specifically for the Ford Fiesta HVAC system. This A/C refrigerant liquid hose is engineered to handle high-pressure R134a refrigerant, ensuring reliable performance in your vehicle's air conditioning system.

  • Constructed from durable aluminum and rubber materials
  • Compatible with R134a refrigerant type
  • Includes gasket and fittings for secure installation
  • Features P-nut fittings on both liquid and suction ends
  • Equipped with an orifice tube and slim line sealing washers (O-Rings)
  • OEM replacement part designed without a service port or bracket

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering precise HVAC hose and pipe replacements that meet original equipment specifications. The 66544 liquid line hose assembly is part of this line, providing a direct fit solution for the Ford Fiesta without the need for additional modifications. This line emphasizes quality materials and proper sealing components to maintain system integrity under high pressure.

Detailed Product Description

This A/C refrigerant liquid hose assembly is constructed with a combination of aluminum and rubber to withstand the demands of high-pressure R134a refrigerant systems. The hose includes two slim line sealing washers (O-Rings) identified as part number 24401, ensuring a tight seal to prevent leaks. The assembly comes with all necessary fittings but does not include a bracket or service port, making it a straightforward replacement for the Ford Fiesta’s liquid line. The P-nut fitting style on both the liquid and suction ends facilitates secure connections, while the integrated orifice tube helps regulate refrigerant flow within the system.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant liquid hoses in Ford Fiesta models
  • Resolution of refrigerant leaks caused by degraded seals or fittings
  • Restoration of proper refrigerant flow and system pressure
  • Correction of A/C system performance issues related to hose assembly failure
  • Maintenance of high-pressure system integrity for R134a refrigerant

Installation Notes and Tips

  • Ensure the system is fully depressurized before removal of the old hose assembly
  • Verify compatibility with Ford Fiesta HVAC system prior to installation
  • Use the included gasket and fittings to secure connections and prevent leaks
  • Inspect O-rings for damage and replace if necessary during installation
  • Follow manufacturer torque specifications for P-nut fittings to avoid overtightening

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66544 is an OEM replacement part designed to meet or exceed original equipment standards. It includes all necessary sealing components to ensure a reliable fit and function. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandFour Seasons
Part Number66544
PositionHose Assembly
Bracket?w/o Bracket
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
Liquid Line StyleP-Nut Fitting
MaterialAluminum / Rubber
O-Ring A Number/Desc[24401] / Slim Line Sealing Washer
O.E. Replacement?Yes
Orifice Tube?w/ Orifice Tube
Refrigerant TypeR134a
Service Port?w/o Service Port
StyleLiquid Line Hose Assembly w/o Orifice Tube
Suction End TypeP-Nut Fitting
System PressureHigh Pressure
TypeLiquid Line

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2019FordFiesta1.6LL4N/AFitment: Without Orifice Tube.; Hose Assembly
2018FordFiesta1.6LL4N/AFitment: Without Orifice Tube.; Hose Assembly
2017FordFiesta1.6LL4N/AFitment: Without Orifice Tube.; Hose Assembly
2016FordFiesta1.6LL4N/AFitment: Without Orifice Tube.; Hose Assembly
2015FordFiesta1.6LL4N/AFitment: Without Orifice Tube.; Hose Assembly
2014FordFiesta1.6LL4N/AFitment: Without Orifice Tube.; Hose Assembly

* 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:

21145560753966544791137A83062D2BZ19835AD2BZ19835DHA111768CYF37485

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