HomeHVAC > Hoses and PipesFour Seasons 66633 A/C Refrigerant Discharge Hose
Part #: 66633

Four Seasons 66633 A/C Refrigerant Discharge Hose

Hose Assembly
⚙️ 8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Cadillac and Chevrolet, ELR and Volt
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Reliable A/C Refrigerant Discharge Hose for Cadillac and Chevrolet

The Four Seasons Hose Assembly part number 66633 is designed specifically for Cadillac ELR and Chevrolet Volt models. This high-pressure A/C refrigerant discharge hose ensures proper function of your vehicle's HVAC system by maintaining efficient refrigerant flow.

Key Features of Four Seasons Hose Assembly 66633

  • Constructed from durable aluminum and rubber materials for long-lasting performance
  • Compatible with R134a refrigerant systems
  • Includes gasket and fittings for secure installation
  • Equipped with a switch service port (M10x1.25) for diagnostic access
  • O-rings included: two slimline washers (24402) and one green o-ring (24606)
  • Designed as an OE replacement discharge line without bracket or muffler
  • Features a P-nut fitting on the suction end for reliable connection

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing complete hose assemblies tailored for HVAC systems. This product line offers components engineered to meet original equipment specifications, ensuring compatibility and performance. The 66633 discharge hose assembly is part of this line, delivering a ready-to-install solution for high-pressure refrigerant discharge in select Cadillac and Chevrolet vehicles.

Detailed Product Description

This A/C refrigerant discharge hose assembly is built to handle high system pressures typical in modern automotive air conditioning systems. The combination of aluminum and rubber materials provides flexibility and durability, reducing the risk of leaks or failures. The included fittings and gaskets simplify installation, while the integrated switch service port allows for easy system diagnostics without removing the hose. Designed without a bracket or muffler, this hose assembly fits precisely in the HVAC system of Cadillac ELR and Chevrolet Volt models, ensuring proper refrigerant flow and system efficiency.

Common Issues Addressed by This Hose Assembly

  • Leaking or damaged refrigerant discharge lines causing A/C system inefficiency
  • Failure of original discharge hose due to wear or corrosion
  • Difficulty accessing service ports for system diagnostics
  • Incompatibility with R134a refrigerant systems in Cadillac ELR and Chevrolet Volt
  • Loss of system pressure leading to inadequate cooling performance

Installation Notes and Tips

  • Ensure system is depressurized before removing the old discharge hose
  • Use the included gaskets and O-rings to prevent leaks during installation
  • Verify the switch service port size (M10x1.25) matches your diagnostic tools
  • Check for proper seating of the P-nut fitting on the suction end
  • Do not reuse old O-rings or gaskets to maintain system integrity

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66633 is manufactured to meet or exceed original equipment standards for Cadillac ELR and Chevrolet Volt vehicles. It includes all necessary seals and fittings to ensure a secure, leak-free installation. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number66633
PositionHose Assembly
Bracket?w/o Bracket
Component TypeDischarge Line
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/ Switch Port
Gasket Or Seal IncludedIncluded
MaterialAluminum / Rubber
Muffler?w/o Muffler
O-Ring A Number/Desc[24402] / Slimline Washer
O-Ring B Number/Desc[24606] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port?w/o Service Port
Suction End TypeP-Nut Fitting
Switch Included?Not Included
Switch Port SizeM10X1.25
System PressureHigh Pressure

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2016CadillacELRN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2015CadillacELRN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2015ChevroletVoltN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2014CadillacELRN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2014ChevroletVoltN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2013ChevroletVoltN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2012ChevroletVoltN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
2011ChevroletVoltN/ACompatible with various vehicles A/C refrigerant discharge hose; 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:

21154422764039234117452596558366633700187787795A83151HA111796C

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