HomeHVAC > Hoses and PipesFour Seasons 66050 A/C Liquid Line with Orifice Tube
Part #: 66050

Four Seasons 66050 A/C Liquid Line with Orifice Tube

Hose Assembly
⚙️ 18 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Chevrolet and GMC, Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD
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Overview of Four Seasons Hose Assembly 66050

The Four Seasons Hose Assembly 66050 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. This A/C liquid line with orifice tube ensures reliable performance in your vehicle's HVAC system by maintaining proper refrigerant flow and pressure.

  • Constructed from durable aluminum material for corrosion resistance
  • Compatible with R134a refrigerant systems
  • Includes gasket and fittings for a complete installation
  • Equipped with a serviceable orifice tube and service port for maintenance
  • Designed without a bracket and switch service port for direct fit
  • Features a 16 mm high side service port with P-nut fitting suction end
  • O.E. replacement part ensuring factory-level compatibility

Detailed Product Description

This Four Seasons Hose Assembly 66050 belongs to the Hose Assembly product line, which focuses on providing precise and reliable hose and pipe solutions for automotive HVAC systems. The liquid line hose assembly includes a serviceable orifice tube and a high side service port, allowing for efficient refrigerant flow and easy servicing. Made from aluminum, this hose assembly resists corrosion and withstands the demands of heavy-duty truck applications. It is designed to work with R134a refrigerant, the standard for many modern A/C systems, and comes complete with necessary gaskets and fittings to ensure a secure and leak-free installation.

Applications and Common Issues Addressed

  • Replacement of worn or damaged A/C liquid lines in Chevrolet and GMC heavy-duty trucks
  • Restoring proper refrigerant flow and pressure in the HVAC system
  • Fixing leaks caused by cracked or corroded hose assemblies
  • Resolving A/C system inefficiencies due to faulty orifice tubes
  • Facilitating maintenance with a service port for refrigerant charging and diagnostics

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66050, ensure the vehicle is compatible by verifying the make and model: Chevrolet Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, or Silverado 3500 HD. The assembly comes without a bracket and switch service port, so use existing mounting points and wiring as applicable. The included gasket and fittings simplify the installation process, but proper torque specifications should be followed to prevent leaks. The serviceable orifice tube allows for easy replacement or cleaning during routine maintenance.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an O.E. replacement part, meeting original equipment standards for fit, form, and function. The aluminum construction and included components are designed to deliver durability and reliable performance in demanding HVAC applications. Warranty details are provided by Four Seasons and typically cover defects in materials and workmanship under normal use.

BrandFour Seasons
Part Number66050
PositionHose Assembly
Bracket?w/o Bracket
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum
O.E. Replacement?Yes
Orifice Tube?w/ Orifice Tube
Refrigerant TypeR134a
Service Port Size16 mm
Service Port?w/ Service Port
StyleLiquid Line Hose Assembly w/ Serviceable Orifice Tube
Suction End TypeP-Nut Fitting
Svc Port High SideHigh Side
TypeLiquid Line

This part fits 18 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2014ChevroletSilverado 2500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2014ChevroletSilverado 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2014GMCSierra 2500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2014GMCSierra 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2013ChevroletSilverado 2500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2013ChevroletSilverado 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2013GMCSierra 2500 HD6.6LV8DIESELN/Aw/o ambulance package; Hose Assembly
2013GMCSierra 3500 HD6.6LV8DIESELN/Aw/o ambulance package; Hose Assembly
2012ChevroletSilverado 2500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2012ChevroletSilverado 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2012GMCSierra 2500 HD6.6LV8DIESELN/Aw/o ambulance package; Hose Assembly
2012GMCSierra 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2012GMCSierra 3500 HD6.6LV8DIESELN/Aw/o ambulance package; Hose Assembly
2011ChevroletSilverado 2500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2011ChevroletSilverado 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2011GMCSierra 2500 HD6.6LV8DIESELN/Aw/o ambulance package; Hose Assembly
2011GMCSierra 3500 HD6.6LV8N/Aw/o ambulance package; Hose Assembly
2011GMCSierra 3500 HD6.6LV8DIESELN/Aw/o ambulance package; 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:

15344902097299122802052228485372587417728244966050790097A82490T66050

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