HomeHVAC > Hoses and PipesFour Seasons 66109 A/C Refrigerant Discharge / Suction Hose Assembly
Part #: 66109

Four Seasons 66109 A/C Refrigerant Discharge / Suction Hose Assembly

Hose Assembly
14 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Hose Assembly
Fitment: Buick, Chevrolet, and Pontiac, Allure, LaCrosse, Impala, Grand Prix, and Monte Carlo
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Overview of Four Seasons Hose Assembly 66109

The Four Seasons Hose Assembly 66109 is designed for reliable performance in automotive HVAC systems. This A/C refrigerant discharge and suction hose assembly is compatible with select Buick, Chevrolet, and Pontiac models, providing a durable solution for air conditioning maintenance and repair.

  • Constructed from aluminum and rubber materials for durability and flexibility
  • Compatible with R134a refrigerant systems
  • Includes gaskets and O-rings for secure sealing
  • Features P-nut fittings on both discharge and suction ends
  • Equipped with a muffler and manifold block for noise reduction and system integration
  • OE replacement part designed without a service port or bracket

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line from Four Seasons focuses on providing complete hose and pipe solutions for automotive HVAC systems. This line emphasizes quality materials and precise fitment to ensure compatibility with original equipment specifications. The 66109 hose assembly exemplifies this approach by combining aluminum and rubber components with included seals and fittings to maintain system integrity and performance.

Detailed Product Description

The Four Seasons 66109 hose assembly serves as both the discharge and suction line in the vehicle's air conditioning system. It is specifically engineered for use with R134a refrigerant, common in many Buick, Chevrolet, and Pontiac vehicles such as the Allure, Grand Prix, Impala, LaCrosse, and Monte Carlo. The assembly includes essential components like gaskets and O-rings to ensure leak-free connections. Its P-nut fitting style on both ends allows for straightforward installation and secure attachment to the manifold block, which is included in the assembly. The integrated muffler helps reduce operational noise, contributing to a quieter cabin environment. This hose assembly does not include a service port or bracket, aligning with original equipment design for a direct replacement.

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
  • Restoring proper refrigerant flow in Buick Allure and Chevrolet Impala A/C systems
  • Eliminating noise issues related to faulty or missing mufflers in the HVAC line
  • Maintaining system integrity in Pontiac Grand Prix and Monte Carlo air conditioning units

Installation Notes and Tips

  • Ensure compatibility with vehicle models Buick Allure, Chevrolet Impala, Pontiac Grand Prix, LaCrosse, and Monte Carlo before installation
  • Use the included gaskets and O-rings to prevent refrigerant leaks
  • Verify that P-nut fittings are properly tightened to manufacturer torque specifications
  • Inspect the manifold block and muffler for damage prior to installation
  • Do not attempt to install if the hose assembly includes a service port or bracket, as this model does not have these features

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66109 is manufactured to meet or exceed original equipment standards for fit, form, and function. It is an OE replacement part designed to integrate seamlessly with the vehicle's existing HVAC system. The product includes all necessary seals and fittings to ensure a secure and leak-free installation. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandFour Seasons
Part Number66109
PositionHose Assembly
Bracket?w/o Bracket
Discharge End StyleP-Nut Fitting
Discharge End TypeP-Nut Fitting
Friction Material Attachmentw/o Switch Port
Gasket Or Seal IncludedIncluded
Manifold Suc StyleBlock
Manifold?Yes
MaterialAluminum / Rubber
Muffler?w/ Muffler
O-Rings Included?Included
O.E. Replacement?Yes
Refrigerant TypeR134a
Service Port?w/o Service Port
Suction End StyleP-Nut Fitting
Suction End TypeP-Nut Fitting
Switch Included?Not Included
TypeDischarge & Suction Line

This part fits 14 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2009BuickAllure5.3LV8N/AHose Assembly
2009BuickLaCrosse5.3LV8N/AHose Assembly
2009ChevroletImpala5.3LV8N/ACompressor to Condenser; Hose Assembly
2008BuickAllure5.3LV8N/AHose Assembly
2008BuickLaCrosse5.3LV8N/AHose Assembly
2008ChevroletImpala5.3LV8N/ACompressor to Condenser; Hose Assembly
2008PontiacGrand Prix5.3LV8N/ACompressor to Condenser; Hose Assembly
2007ChevroletImpala5.3LV8N/ACompressor to Condenser; Hose Assembly
2007ChevroletMonte Carlo5.3LV8N/ACompressor to Condenser; Hose Assembly
2007PontiacGrand Prix5.3LV8N/ACompressor to Condenser; Hose Assembly
2006ChevroletImpala5.3LV8N/AHose Assembly
2006ChevroletMonte Carlo5.3LV8N/ACompressor to Condenser; Hose Assembly
2006PontiacGrand Prix5.3LV8N/ACompressor to Condenser; Hose Assembly
2005PontiacGrand Prix5.3LV8N/ACompressor to Condenser; 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:

103466411528516421100766109704522781526A82551HA111619CHA11619C

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