HomeHVAC > Hoses and PipesFour Seasons 66737 A/C Refrigerant Discharge / Suction Hose Assembly
Part #: 66737

Four Seasons 66737 A/C Refrigerant Discharge / Suction Hose Assembly

Hose Assembly
4 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: Chevrolet and Pontiac, Equinox and Torrent
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Overview of Four Seasons Hose Assembly 66737

The Four Seasons Hose Assembly 66737 is designed specifically for Chevrolet Equinox and Pontiac Torrent models. This A/C refrigerant discharge and suction hose assembly ensures reliable performance in your vehicle's HVAC system by handling both high and low pressure refrigerant flow.

  • Constructed with durable aluminum and rubber materials
  • Compatible with R134-a refrigerant type
  • Includes necessary gaskets, seals, and fittings for installation
  • Equipped with a switch service port for added functionality
  • Features a muffler to reduce noise and vibration
  • Designed with P-nut fittings on both discharge and suction ends
  • Includes manifold block and multiple O-rings for secure sealing

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on providing complete hose and pipe solutions for automotive HVAC systems. This line emphasizes OEM replacement quality and includes assemblies that integrate multiple components such as fittings, seals, and mufflers to simplify installation and ensure system integrity. The 66737 hose assembly is part of this line, offering a comprehensive solution for refrigerant discharge and suction lines in select GM vehicles.

Detailed Product Description

This Four Seasons 66737 hose assembly is engineered to meet the specific HVAC requirements of Chevrolet Equinox and Pontiac Torrent vehicles. It supports R134-a refrigerant and is designed to handle both high and low system pressures, ensuring efficient refrigerant flow. The assembly includes a manifold block and a muffler to minimize noise during operation. Both discharge and suction ends feature P-nut fittings, with precise measurements of 11.7 mm and 15.95 mm respectively, facilitating a secure and leak-free connection. The package includes multiple O-rings—slimline washers, sealing washers, and a green O-ring—to maintain a tight seal and prevent refrigerant leaks. While the assembly comes with a switch service port, the switch itself is not included.

Common Applications and Issues Addressed

  • Replacement of worn or damaged A/C refrigerant discharge and suction hoses
  • Resolving refrigerant leaks caused by degraded seals or fittings
  • Eliminating noise and vibration in the HVAC system with the included muffler
  • Restoring proper refrigerant flow and system pressure balance
  • Upgrading to an OEM-quality hose assembly for Chevrolet Equinox and Pontiac Torrent models

Installation Notes and Tips

  • Ensure compatibility with Chevrolet Equinox and Pontiac Torrent before installation
  • Use the included gaskets and O-rings to prevent refrigerant leaks
  • Verify that the P-nut fittings are properly tightened to manufacturer specifications
  • Check the switch service port for proper access, noting that the switch is not included
  • Inspect the hose assembly for any damage before installation

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66737 is an OEM replacement part designed to meet or exceed original equipment specifications. It includes all necessary seals and fittings to ensure a secure and reliable installation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Always refer to the manufacturer’s warranty documentation for complete terms.

BrandFour Seasons
Part Number66737
PositionHose Assembly
Bracket?w/o Bracket
Discharge End MM11.700
Discharge End StyleP-Nut Fitting
Discharge End TypeP-Nut Fitting
Fittings IncludedIncluded
Friction Material Attachmentw/ Switch Port
Gasket Or Seal IncludedIncluded
Manifold Suc StyleBlock
Manifold?Yes
MaterialAluminum / Rubber
Muffler?w/ Muffler
O-Ring A Number/Desc[24402] / Slimline Washer
O-Ring B Number/Desc[24354] / Sealing Washer
O-Ring C Number/Desc[24606] / Green O-Ring
O-Rings Included?Included
O.E. Replacement?Yes
Orifice Tube?Not Included
Refrigerant TypeR134-A
Service Port?w/o Service Port
Suction End IN0.63
Suction End MM15.95
Suction End StyleP-Nut Fitting
Suction End TypeP-Nut Fitting
Switch Included?Not Included
Switch Port Valve Core56346
System PressureHigh Pressure / Low Pressure
TypeDischarge & Suction Line

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009ChevroletEquinox3.6LV6N/AHose Assembly
2009PontiacTorrent3.6LV6N/AHose Assembly
2008ChevroletEquinox3.6LV6N/AHose Assembly
2008PontiacTorrent3.6LV6N/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:

153378615927302481315266737700131781572A83311HA111623C

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