Four Seasons 66749 A/C Refrigerant Discharge / Suction Hose Assembly

Overview of Four Seasons Hose Assembly 66749

The Four Seasons Hose Assembly 66749 is designed specifically for Cadillac ATS models, providing reliable performance for your vehicle's HVAC system. This A/C refrigerant discharge and suction hose assembly is engineered to handle both high and low system pressures, ensuring efficient refrigerant flow and system integrity.

• Constructed from durable aluminum and rubber materials
• Compatible with R134-a refrigerant type
• Includes gasket and slimline washer seals for secure connections
• Equipped with p-nut fittings on both discharge and suction ends
• Features a built-in muffler and manifold for noise reduction and system efficiency
• Includes fittings and switch service port for maintenance access
• OE replacement part designed for Cadillac ATS HVAC systems

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on delivering high-quality hose and pipe solutions for automotive HVAC systems. This line emphasizes durability and precise fitment, using materials like aluminum and rubber to withstand system pressures and environmental conditions. The 66749 hose assembly exemplifies this approach by combining essential features such as included seals, fittings, and a muffler to maintain system performance and reduce noise.

Technical Description and Features

The Four Seasons 66749 hose assembly is engineered for use with R134-a refrigerant in Cadillac ATS vehicles. It supports both high and low pressure within the A/C system, ensuring proper refrigerant discharge and suction. The assembly includes two sets of slimline washer O-rings (part numbers 24404 and 24402) to provide secure, leak-free connections. Both discharge and suction ends utilize p-nut fittings, facilitating straightforward installation and service. The inclusion of a manifold and muffler helps optimize system operation and reduce noise during A/C function. This hose assembly does not include a bracket or switch but features a switch service port for diagnostic access.

Common Applications and Problem Resolution

• Replacement of worn or leaking A/C refrigerant discharge and suction hoses in Cadillac ATS
• Restoring proper refrigerant flow and pressure balance in the HVAC system
• Eliminating noise caused by damaged or missing mufflers in the hose assembly
• Addressing refrigerant leaks due to degraded seals or fittings
• Ensuring compatibility with R134-a refrigerant systems for optimal performance

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66749 on a Cadillac ATS, ensure all O-rings and seals are properly seated to prevent leaks. The p-nut fittings on both ends require careful tightening to manufacturer torque specifications. Although the assembly includes fittings and a switch service port, note that the switch itself is not included. Verify system pressure ratings and refrigerant type compatibility before installation. Proper handling of the aluminum and rubber components will help maintain hose integrity during installation.

Quality Assurance and Warranty

This Four Seasons hose assembly is an OE replacement part designed to meet or exceed original equipment specifications for Cadillac ATS HVAC systems. It includes all necessary seals and fittings to ensure a secure and reliable installation. While specific warranty details are not provided, Four Seasons products typically adhere to industry standards for durability and performance.