HomeHVAC > Hoses and PipesFour Seasons 55851 A/C Refrigerant Discharge / Suction Hose Assembly
Part #: 55851

Four Seasons 55851 A/C Refrigerant Discharge / Suction Hose Assembly

Hose Assembly
⚙️ 8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Hose Assembly
🚗Fitment: Chevrolet and GMC, C1500, C2500, K1500, and K2500
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Overview of Four Seasons Hose Assembly 55851

The Four Seasons Hose Assembly 55851 is designed specifically for Chevrolet and GMC trucks, including C1500, C2500, K1500, and K2500 models. This A/C refrigerant discharge and suction hose assembly ensures reliable HVAC system performance by maintaining proper refrigerant flow and pressure.

  • Constructed from durable aluminum and rubber materials
  • Compatible with R134a refrigerant type
  • Includes green o-rings for secure sealing (part numbers 24606, 24608, 24612, 24650)
  • Equipped with a manifold and muffler for noise reduction and system efficiency
  • Features female o-ring discharge and suction ends with UNF threading
  • Includes a switch service port but does not come with fittings or a bracket

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing high-quality HVAC hoses and pipes engineered for direct OE replacement. This product line emphasizes durability and precise fitment to maintain the integrity of vehicle air conditioning systems. The 55851 hose assembly is part of this line, offering a reliable solution for maintaining refrigerant flow in Chevrolet and GMC trucks.

Detailed Product Description

This hose assembly combines aluminum and rubber components to withstand the pressures and temperatures typical in automotive air conditioning systems. It is designed for use with R134a refrigerant, the standard for many modern vehicles. The assembly includes multiple green o-rings to ensure leak-free connections at both discharge and suction ends, which are female o-ring types with UNF threading. The inclusion of a manifold and muffler helps reduce noise and vibration, contributing to a quieter HVAC operation. While the assembly includes a switch service port, fittings and brackets are not included, so additional components may be required depending on your vehicle's setup.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant discharge and suction hoses
  • Resolving refrigerant leaks caused by degraded o-rings or hose material
  • Eliminating noise and vibration in the HVAC system with the integrated muffler
  • Restoring proper refrigerant flow in Chevrolet C1500, C2500, K1500, and K2500 trucks
  • Maintaining system integrity with OE replacement parts for reliable performance

Installation Notes and Tips

  • Ensure compatibility with your specific Chevrolet or GMC truck model before installation
  • Inspect all included green o-rings and replace any damaged seals during installation
  • Note that fittings and brackets are not included; source these separately if needed
  • Handle aluminum and rubber components carefully to avoid damage during installation
  • Verify the switch service port connection aligns with your vehicle’s HVAC system requirements

Quality Assurance and Warranty

The Four Seasons Hose Assembly 55851 is manufactured to meet or exceed OEM specifications for durability and fitment. It is an exact OE replacement part designed to maintain the performance and reliability of your vehicle’s air conditioning system. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number55851
PositionHose Assembly
Bracket?w/o Bracket
Discharge End StyleUNF O-Ring
Discharge End TypeFemale O-Ring
Fittings IncludedNot Included
Friction Material Attachmentw/ Switch Port
Gasket Or Seal IncludedIncluded
Manifold?Yes
MaterialAluminum / Rubber
Muffler?w/ Muffler
O-Ring A Number/Desc[24606] / Green O-Ring
O-Ring B Number/Desc[24608] / Green O-Ring
O-Ring C Number/Desc[24612] / Green O-Ring
O-Ring D Number/Desc[24650] / Green O-Ring
O-Rings Included?Included
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port?w/o Service Port
Suction End StyleUNF O-Ring
Suction End TypeFemale O-Ring
Switch Included?Not Included
TypeDischarge & Suction Line

This part fits 8 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1993ChevroletC15004.3LV6N/AHose Assembly
1993ChevroletC25004.3LV6N/AHose Assembly
1993ChevroletK15004.3LV6N/AHose Assembly
1993ChevroletK25004.3LV6N/AHose Assembly
1993GMCC15004.3LV6N/AHose Assembly
1993GMCC25004.3LV6N/AHose Assembly
1993GMCK15004.3LV6N/AHose Assembly
1993GMCK25004.3LV6N/AHose 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:

01490802067021115585115301811534261156918821918803519301812006952474903463822348273781132481209251640558515730181630286630464704951781132A70695AC5607ACD1530181CWK781132HA111303CHA5720T55851XH490

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