Four Seasons 66398 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66398

The Four Seasons Hose Assembly 66398 is designed specifically for the HVAC system of select INFINITI and Nissan vehicles. This A/C refrigerant suction hose is engineered to meet original equipment specifications, ensuring reliable performance in your vehicle's air conditioning system.

• Constructed from durable aluminum and rubber materials
• Features a flange end and a P-nut fitting end for secure connections
• Compatible with R134-a refrigerant systems
• Includes necessary gaskets and fittings for installation
• Designed as a low-pressure suction line with a service port

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering precise replacement hoses and pipes for automotive HVAC systems. This line emphasizes compatibility with original equipment, providing components like the 66398 suction hose that maintain system integrity and performance. The assemblies are designed to simplify installation by including essential fittings and seals.

Detailed Product Description

The Four Seasons 66398 A/C refrigerant suction hose is constructed from a combination of aluminum and rubber, providing both flexibility and durability under low-pressure conditions. It features a flange on one end and a P-nut fitting on the other, ensuring a secure and leak-free connection within the HVAC system. This hose is compatible with R134-a refrigerant and includes one gasket and multiple O-rings ([24068] gasket and two [24682] green O-rings) to maintain a proper seal. The assembly also comes with fittings and a 13 mm service port on the low-pressure side, facilitating maintenance and refrigerant charging without the need for additional components. This hose assembly is designed without a bracket, muffler, or switch, focusing solely on the suction line function.

Compatible Vehicles and Applications

• INFINITI QX60
• Nissan Pathfinder
• Nissan JX35

This hose assembly is an exact replacement for the original equipment part, making it suitable for HVAC repairs or system upgrades on these specific models.

Common Issues Addressed by This Hose Assembly

• Leaks in the A/C refrigerant suction line causing reduced cooling efficiency
• Damaged or cracked hoses leading to refrigerant loss
• Faulty or missing seals resulting in system pressure drops
• Corrosion or wear on original suction hoses
• Difficulty maintaining proper refrigerant pressure during service

Installation Notes and Tips

When installing the Four Seasons 66398 hose assembly, ensure all included gaskets and O-rings are properly seated to prevent leaks. The flange and P-nut fittings should be tightened to manufacturer torque specifications. Since this assembly does not include a bracket or muffler, verify that the hose is securely supported within the vehicle’s HVAC system to avoid vibration damage. The 13 mm service port allows for easy refrigerant charging and pressure checks during installation or maintenance.

Quality Assurance and Warranty

Four Seasons Hose Assembly 66398 is manufactured to meet or exceed original equipment standards, providing reliable performance for your vehicle’s HVAC system. This part is an O.E. replacement and includes all necessary seals and fittings for proper installation. Warranty coverage details should be confirmed with the product documentation or supplier.