Four Seasons 56668 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 56668

The Four Seasons Hose Assembly 56668 is designed specifically for the HVAC system of INFINITI and Nissan vehicles, including the Pathfinder and QX4 models. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow with durable aluminum and rubber construction.

• Constructed from aluminum and rubber for durability and flexibility
• Equipped with P-nut fittings on both ends for secure connections
• Compatible with R134-a refrigerant systems
• Includes green O-rings and necessary fittings for installation
• Features a muffler to reduce noise during operation
• Designed as a low-pressure suction line with a service port included
• OE replacement part ensuring proper fit and function

Detailed Product Description

The Four Seasons Hose Assembly 56668 belongs to the Hose Assembly product line, which focuses on delivering complete hose solutions for automotive HVAC systems. This line emphasizes quality materials and precise fitment to maintain system integrity and performance. The 56668 suction hose is engineered to handle low-pressure refrigerant flow in R134-a systems, making it suitable for the air conditioning systems of INFINITI Pathfinder and Nissan QX4 vehicles.

Both ends of the hose feature P-nut fittings, providing a secure and leak-resistant connection. The assembly includes green O-rings (part numbers 24681 and 24684) to ensure a tight seal, along with all necessary fittings. A built-in muffler helps minimize operational noise, enhancing cabin comfort. The hose also comes with a quick disconnect (Qdc) service port on the low-pressure side, facilitating maintenance without the need for additional components.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses in INFINITI Pathfinder and Nissan QX4
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Eliminating low-pressure system failures due to faulty suction lines
• Reducing A/C system noise with integrated muffler design
• Ensuring proper refrigerant flow and system pressure for efficient cooling

Installation Notes and Tips

• Verify compatibility with your vehicle’s make, model, and year before installation
• Use the included green O-rings to ensure a proper seal at connection points
• Inspect the service port for accessibility during routine A/C maintenance
• Ensure fittings are tightened to manufacturer specifications to prevent leaks
• Handle the hose carefully to avoid kinks or damage during installation

Quality Assurance and Warranty

The Four Seasons Hose Assembly 56668 is an OE replacement part, meeting original equipment standards for fit, form, and function. It is manufactured with high-quality materials to withstand the demands of automotive HVAC systems. The product includes all necessary fittings and seals to facilitate a reliable installation. Warranty details are provided by Four Seasons and typically cover defects in materials and workmanship under normal use.