Four Seasons 56776 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 56776

The Four Seasons Hose Assembly 56776 is designed for reliable performance in the HVAC system of select GM vehicles. This A/C refrigerant suction hose is engineered to meet original equipment specifications, ensuring compatibility and durability for models like the Chevrolet Tahoe and Cadillac Escalade.

• Constructed from durable aluminum and rubber materials
• Features a P-nut fitting on suction end and a captured o-ring on the opposite end
• Compatible with R134-a refrigerant systems operating under low pressure
• Includes gasket and fittings for a complete installation
• OE replacement part without a service port or muffler

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering precise HVAC hose and pipe solutions tailored for vehicle-specific applications. The 56776 suction hose assembly is part of this line, providing a direct replacement that maintains system integrity and performance for GM trucks and SUVs. This line emphasizes quality materials and fitment accuracy to support efficient refrigerant flow and system reliability.

Detailed Product Description

This A/C refrigerant suction hose assembly is constructed with a combination of aluminum and rubber to balance flexibility and strength. The suction line is designed with a P-nut fitting on one end and a captured o-ring on the other, ensuring a secure, leak-resistant connection. It is intended for use with R134-a refrigerant in low-pressure sections of the HVAC system. The assembly includes two slimline washer o-rings (part number 24404) and necessary fittings, but does not include a bracket, muffler, or service port. This part is an exact OE replacement, compatible with various GM models including the Chevrolet Suburban 1500 and GMC Yukon XL 2500.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses
• Resolving refrigerant leaks caused by degraded seals or fittings
• Restoring proper refrigerant flow in low-pressure HVAC system components
• Eliminating system inefficiencies due to hose cracks or material fatigue
• Maintaining system pressure integrity in Cadillac Escalade and Chevrolet Avalanche models

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 56776, ensure all fittings and o-rings are properly seated to prevent leaks. Use the included slimline washers and gasket for a secure seal. This hose assembly does not include a bracket or muffler, so verify existing mounting points and hardware compatibility. The part is designed for vehicles without a switch service port, so no additional switch installation is required. Proper torque specifications should be followed for the P-nut fittings to maintain system pressure.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, manufactured to meet or exceed original equipment standards. The materials and construction are selected to withstand typical HVAC system pressures and environmental conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty covering defects in materials and workmanship.