HomeHVAC > Hoses and PipesFour Seasons 55166 A/C Refrigerant Liquid Hose
Part #: 55166

Four Seasons 55166 A/C Refrigerant Liquid Hose

Hose Assembly
3 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: Mazda, 6
Easy Returns — Return within 60 days for a full refund
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Overview of Four Seasons Hose Assembly 55166

The Four Seasons Hose Assembly 55166 is designed specifically for the Mazda 6, providing a reliable replacement for your vehicle's A/C refrigerant liquid hose. Engineered to handle high-pressure R134a refrigerant systems, this hose assembly ensures proper function and durability in your Mazda's HVAC system.

  • Compatible with Mazda 6 models requiring R134a refrigerant
  • High-pressure liquid line hose assembly without orifice tube
  • Includes fittings and green O-rings (part number 24666) for secure sealing
  • Equipped with P-nut fitting on the suction end for proper connection
  • OE replacement part ensuring direct fit and function

Detailed Product Description

This Four Seasons Hose Assembly 55166 belongs to the Hose Assembly product line, which focuses on delivering precise HVAC hose and pipe replacements. This particular liquid line hose assembly is designed without a service port or switch port but includes an orifice tube, making it suitable for high-pressure R134a refrigerant systems. The inclusion of two green O-rings (part number 24666) and necessary fittings ensures a tight, leak-free installation. The P-nut fitting on the suction end provides a secure and proper connection to your Mazda 6's A/C system. As an OE replacement, this hose assembly meets factory specifications for fit and performance.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant liquid hoses in Mazda 6
  • Resolving refrigerant leaks caused by cracked or deteriorated hoses
  • Restoring proper refrigerant flow in high-pressure R134a systems
  • Fixing issues related to improper sealing with included O-rings and fittings
  • Ensuring compatibility with OEM orifice tube configurations

Installation Notes and Tips

  • Verify compatibility with your specific Mazda 6 model year before installation
  • Ensure all fittings and O-rings are properly seated to prevent leaks
  • Do not attempt to install with a switch or service port, as this assembly does not include them
  • Use proper tools to tighten the P-nut fitting without over-torquing
  • Follow manufacturer guidelines for refrigerant handling and system evacuation

Quality Assurance and Warranty

Four Seasons products, including the Hose Assembly 55166, are manufactured to meet or exceed OEM standards for durability and performance. This part is an exact OE replacement designed to maintain the integrity of your Mazda 6's HVAC system. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship to ensure customer confidence in their purchase.

BrandFour Seasons
Part Number55166
PositionHose Assembly
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
O-Ring A Number/Desc[24666] / Green O-Ring
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 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005Mazda63.0LV6N/AFitment: Without Orifice Tube.; Hose Assembly
2004Mazda63.0LV6N/AFitment: Without Orifice Tube.; Hose Assembly
2003Mazda63.0LV6N/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:

20011855166791059801159A70115GK2J614GYAGK2J614GYBGK2J614GYCGK2J614GYDGK2J614GYEGK2J614GYFGK3J614GYDHA111858CT55166

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