Four Seasons 66638 A/C Refrigerant Discharge / Suction Hose Assembly

Overview of Four Seasons Hose Assembly 66638

The Four Seasons Hose Assembly 66638 is designed specifically for Chevrolet Equinox and GMC Terrain models. This A/C refrigerant discharge and suction hose assembly ensures reliable performance with durable aluminum and rubber construction, compatible with R134a refrigerant systems.

• Constructed from aluminum and rubber for durability and flexibility
• Compatible with R134a refrigerant type
• Includes all necessary O-rings and slimline washers for proper sealing
• Features P-nut fittings on both discharge and suction ends
• Equipped with a muffler and manifold for noise reduction and system efficiency
• OE replacement part designed without a service port or bracket

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on providing complete hose and pipe solutions for HVAC systems in vehicles. This line emphasizes precise fitment and quality materials to maintain system integrity and performance. The 66638 hose assembly is part of this line, offering a direct OE replacement for Chevrolet Equinox and GMC Terrain models, ensuring compatibility and ease of installation.

Detailed Product Description

This hose assembly combines aluminum and rubber materials to balance strength and flexibility, essential for handling refrigerant flow in automotive A/C systems. It is designed for use with R134a refrigerant, the standard for many modern vehicles. The assembly includes multiple O-rings—two slimline washers (part numbers 24402 and 24404) and one green O-ring (part number 24606)—to ensure leak-free connections. Both discharge and suction ends utilize P-nut fittings, providing secure attachment points. The inclusion of a muffler and manifold helps reduce noise and improve system efficiency. This assembly does not include a service port, switch, or bracket, aligning with original equipment specifications.

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 issues related to faulty mufflers in the A/C line
• Restoring proper refrigerant flow in Chevrolet Equinox and GMC Terrain HVAC systems
• Upgrading to an OE replacement hose assembly for reliable system performance

Installation Notes and Tips

• Ensure compatibility with Chevrolet Equinox and GMC Terrain models before installation
• Use included O-rings and slimline washers to prevent refrigerant leaks
• Verify that P-nut fittings are properly tightened to manufacturer torque specifications
• Inspect the A/C system for additional wear or damage during replacement
• Professional installation is recommended to maintain system integrity and safety

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66638 is an OE replacement part manufactured to meet original equipment standards. It includes all necessary seals and components to ensure a proper fit and function. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality controls to support reliable automotive HVAC repairs.