HomeHVAC > Hoses and PipesFour Seasons 55491 A/C Refrigerant Discharge Hose
Part #: 55491

Four Seasons 55491 A/C Refrigerant Discharge Hose

Hose Assembly
⚙️ 19 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Cadillac, Commercial Chassis, DeVille, and Fleetwood
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Overview of Four Seasons Hose Assembly 55491

The Four Seasons Hose Assembly 55491 is designed for reliable A/C refrigerant discharge in select Cadillac models. Engineered to handle R12 and R134a refrigerants, this discharge hose assembly ensures proper HVAC system function in Cadillac Commercial Chassis, DeVille, and Fleetwood vehicles.

  • Compatible with Cadillac Commercial Chassis, DeVille, and Fleetwood
  • Designed for A/C refrigerant types R12 and R134a
  • Includes gasket, fittings, and green O-rings for secure sealing
  • Features a muffler and a 3/8" - 24 switch service port
  • OE replacement part ensuring proper fit and function
  • Discharge line component type without bracket or switch included

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on durable hose assemblies tailored for HVAC systems. This line provides components that meet original equipment specifications, including necessary fittings, gaskets, and O-rings. The 55491 hose assembly is part of this line, offering a discharge line solution with integrated muffler and switch service port features to maintain system integrity and performance.

Detailed Product Description

This A/C refrigerant discharge hose assembly (part number 55491) is engineered to replace original equipment in Cadillac Commercial Chassis, DeVille, and Fleetwood models. It supports both R12 and R134a refrigerants, making it versatile for various HVAC system requirements. The assembly includes two green O-rings (part number 24608) and one additional green O-ring (part number 24606) to ensure leak-free connections. The hose features a block-type suction end and comes with a muffler to reduce noise during operation. While the assembly includes a switch service port sized 3/8" - 24, the switch itself is not included. Fittings and gasket are included for a complete installation, though the assembly does not come with a mounting bracket.

Common Applications and Issues Addressed

  • Replacement of worn or leaking A/C refrigerant discharge hoses in Cadillac Commercial Chassis, DeVille, and Fleetwood
  • Resolving refrigerant leaks caused by damaged or degraded O-rings and fittings
  • Eliminating noise issues in the HVAC system with the integrated muffler
  • Ensuring proper refrigerant flow and pressure with a reliable discharge line
  • Maintaining system integrity when switching between R12 and R134a refrigerants

Installation Notes and Tips

  • Verify compatibility with your specific Cadillac model and year before installation
  • Ensure all included O-rings and gaskets are properly seated to prevent leaks
  • Use the included fittings and gasket for a secure connection
  • Note that the switch is not included; if required, source separately
  • Carefully route the hose to avoid contact with moving parts or heat sources

Quality Assurance and Warranty

The Four Seasons Hose Assembly 55491 is an OE replacement part designed to meet original equipment standards for fit and function. It includes all necessary sealing components to ensure a reliable installation. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality standards for automotive HVAC components.

BrandFour Seasons
Part Number55491
PositionHose Assembly
Bracket?w/o Bracket
Component TypeDischarge Line
DescriptionHose Assemblies
Fittings IncludedIncluded
Friction Material Attachmentw/ Switch Port
Gasket Or Seal IncludedIncluded
Muffler?w/ Muffler
O-Ring A Number/Desc[24608] / Green O-Ring
O-Ring B Number/Desc[24606] / Green O-Ring
O.E. Replacement?Yes
Refrigerant TypeR12, R134a
Service Port?w/o Service Port
Suction End TypeBlock
Switch Included?Not Included
Switch Port Size3/8" - 24

This part fits 19 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
1987CadillacCommercial ChassisN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1987CadillacDeVilleN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1987CadillacFleetwood60 SpecialN/AFuneral Coach; Discharge Line; Hose Assembly
1986CadillacCommercial ChassisN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1986CadillacDeVilleN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1986CadillacFleetwood4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1986CadillacFleetwoodBase4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1986CadillacFleetwood754.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1986CadillacFleetwood75 Formal4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1985CadillacCommercial ChassisN/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1985CadillacDeVille4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1985CadillacFleetwood4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1984CadillacDeVille4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1984CadillacFleetwood4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1983CadillacDeVille4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1983CadillacFleetwood4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1982CadillacDeVille4.1LV8N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1982CadillacFleetwood4.1LV6N/ACompatible with various vehicles A/C refrigerant discharge hose; Hose Assembly
1982CadillacFleetwood4.1LV8N/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:

014892261115549115363216291281936322005782473802605762346339534746378713855491704824787138A90578AC5372CWK787138HA9034T55491XH380

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