Four Seasons 66411 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66411

The Four Seasons Hose Assembly 66411 is designed specifically for the HVAC system of INFINITI and Nissan vehicles, including the Pathfinder and QX60 models. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow with durable aluminum and rubber construction.

• Material: Aluminum and rubber for durability and flexibility
• End 1 Type: Flange connection
• End 2 Type: P-nut fitting for secure attachment
• Refrigerant Type: Compatible with R134-a refrigerant
• Includes gasket and fittings for proper sealing and installation
• Equipped with a muffler to reduce noise
• Service port included (13 mm size) for easy maintenance
• OE replacement part designed for low-pressure suction line applications

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on providing complete hose assemblies for automotive HVAC systems. These assemblies combine multiple components such as hoses, fittings, gaskets, and mufflers into a single unit, simplifying installation and ensuring compatibility. The 66411 part number is part of this line, offering a ready-to-install suction hose assembly tailored for specific vehicle models like the Nissan Pathfinder and INFINITI QX60.

Detailed Product Description

This A/C refrigerant suction hose assembly (part number 66411) is constructed from a combination of aluminum and rubber materials, providing both strength and flexibility required for HVAC system performance. The hose features a flange connection on one end and a P-nut fitting on the other, ensuring a secure and leak-free fit. It is designed for use with R134-a refrigerant and operates under low system pressure conditions. The included green O-rings (part number 24682) and gasket help maintain a tight seal, while the integrated muffler reduces operational noise. This assembly does not include a bracket or switch but comes with a service port for convenient system servicing.

Common Applications and Issues Addressed

• Replacement of worn or leaking A/C refrigerant suction hoses in Nissan Pathfinder and INFINITI QX60
• Resolving low-pressure refrigerant leaks that reduce cooling efficiency
• Eliminating noise caused by damaged or missing mufflers in the suction line
• Ensuring proper refrigerant flow and system pressure for optimal HVAC performance
• Facilitating maintenance with an included service port for refrigerant charging and diagnostics

Installation Notes and Tips

• Verify compatibility with your vehicle’s make and model before installation
• Use the included gasket and O-rings to ensure a proper seal and prevent leaks
• Inspect the flange and P-nut fittings for damage prior to installation
• Ensure the service port is accessible for future maintenance
• Follow manufacturer torque specifications when securing fittings

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66411 is an OE replacement part designed to meet or exceed original equipment specifications for the Nissan Pathfinder and INFINITI QX60 HVAC systems. It includes all necessary fittings and seals to ensure a reliable installation. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or contact the manufacturer for exact warranty terms.