Four Seasons 56420 A/C Refrigerant Discharge Hose

Overview of Four Seasons Hose Assembly 56420

The Four Seasons Hose Assembly 56420 is a reliable A/C refrigerant discharge hose designed for select Chevrolet and GMC heavy-duty trucks. Engineered to meet original equipment specifications, this hose assembly ensures proper refrigerant flow and system integrity for models like the Silverado 2500 HD and Sierra 3500 Classic.

• Compatible refrigerant type: R134a
• Includes gasket and fittings for secure connections
• Equipped with a switch service port (M10x1.250 size)
• Discharge line component type with P-nut fitting suction end
• OE replacement part without bracket or muffler
• Includes one green O-ring (part number 24606)

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. This line emphasizes compatibility and durability, providing assemblies that include necessary seals and fittings to facilitate straightforward installation and maintain system performance. The 56420 hose assembly is part of this line, offering a direct replacement for factory discharge hoses in Chevrolet and GMC heavy-duty trucks.

Detailed Product Description

This A/C refrigerant discharge hose assembly is designed for use with R134a refrigerant systems. It features a discharge line component type with a P-nut fitting on the suction end, ensuring a secure and leak-free connection. The assembly includes a gasket and fittings, as well as a switch service port sized M10x1.250, although the switch itself is not included. The hose comes without a bracket or muffler, matching original equipment specifications for a direct replacement. The included green O-ring (part number 24606) helps maintain a tight seal within the system.

Applications and Common Issues Addressed

• Replacement of worn or damaged A/C refrigerant discharge hoses
• Resolving refrigerant leaks caused by faulty seals or fittings
• Restoring proper refrigerant flow in Chevrolet Avalanche 2500 and GMC Yukon XL 2500 A/C systems
• Addressing issues related to switch service port connections
• Maintaining system pressure and preventing contamination

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 56420, ensure the system is fully depressurized and evacuated before removal of the old hose. Verify that the included gasket and green O-ring are properly seated to prevent leaks. The P-nut fitting should be tightened to manufacturer torque specifications. Note that the assembly does not include a bracket or muffler, so reusing existing mounting hardware may be necessary. The switch service port is included, but the switch itself must be transferred or replaced separately.

Quality Assurance and Warranty

Four Seasons Hose Assembly 56420 is manufactured to meet or exceed original equipment standards, providing reliable performance for Chevrolet and GMC heavy-duty trucks. This part is an OE replacement, ensuring compatibility and durability. Warranty coverage details should be confirmed with the distributor or manufacturer, as they may vary by region.