Four Seasons 55978 A/C Refrigerant Suction Hose

Reliable A/C Refrigerant Suction Hose for Vehicle HVAC Systems

The Four Seasons Hose Assembly part number 55978 is designed to maintain efficient air conditioning performance in vehicles using R134a refrigerant. This A/C refrigerant suction hose combines durable aluminum and rubber materials to ensure long-lasting service in low-pressure HVAC systems.

• Constructed from aluminum and rubber for durability and flexibility
• Features a male o-ring fitting on one end and a sealing washer on the other
• Compatible with R134a refrigerant systems operating under low pressure
• Includes gasket and fittings for a secure, leak-free connection
• Equipped with a service port sized M8x1.000 for maintenance access
• OE replacement part designed to meet original equipment specifications
• Part of the Four Seasons Hose Assembly product line, specialized for HVAC hoses and pipes

Four Seasons Hose Assembly Product Line Overview

The Hose Assembly line by Four Seasons focuses on delivering reliable HVAC hoses and pipes engineered for vehicle air conditioning systems. This product line emphasizes compatibility with original equipment standards, ensuring that parts like the 55978 suction hose integrate seamlessly with existing vehicle systems. The assemblies are designed without brackets or mufflers, streamlining installation and maintenance.

Detailed Product Description

The Four Seasons 55978 A/C refrigerant suction hose is a critical component in the HVAC system, responsible for transporting low-pressure refrigerant safely and efficiently. Its aluminum and rubber construction provides resistance to corrosion and flexibility to accommodate engine vibrations. The hose features a male o-ring fitting on one end and a sealing washer on the other, ensuring a tight seal to prevent refrigerant leaks. The included gasket and fittings support a secure connection, while the integrated service port allows for easy system servicing without hose removal. This suction line is designed without a muffler or bracket, simplifying the installation process.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses in vehicles using R134a refrigerant
• Resolving refrigerant leaks caused by degraded seals or fittings
• Restoring proper low-pressure refrigerant flow for efficient air conditioning performance
• Addressing system pressure inconsistencies due to faulty suction lines
• Facilitating maintenance with an accessible service port for refrigerant charging and diagnostics

Installation Notes and Tips

When installing the Four Seasons 55978 hose assembly, ensure all fittings and seals are properly seated to prevent leaks. The included gasket and sealing washer should be inspected for damage and replaced if necessary. Since this hose does not include a bracket or muffler, verify that the hose is securely routed and supported to avoid contact with moving parts or excessive vibration. Use the service port for system evacuation and recharging procedures as needed.

Quality Assurance and Warranty

Four Seasons manufactures the 55978 hose assembly to meet or exceed original equipment standards, providing reliable performance in vehicle HVAC systems. This part is an OE replacement, ensuring compatibility and durability. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.