Four Seasons 56427 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 56427

The Four Seasons Hose Assembly 56427 is designed specifically for the A/C refrigerant suction line in Chevrolet and GMC heavy-duty trucks. Engineered with durable aluminum and rubber materials, this hose assembly ensures reliable low-pressure refrigerant flow for models like the Silverado 2500 HD and Sierra 3500.

• 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 gaskets, fittings, and two slimline washer O-rings (part number 24404)
• Designed as an OE replacement suction line without a service port or muffler

Detailed Product Description

This A/C refrigerant suction hose from Four Seasons is part of the Hose Assembly product line, which focuses on providing complete hose solutions for HVAC systems. The 56427 hose assembly is tailored for low-pressure refrigerant suction lines, featuring P-nut fittings on both ends to ensure a tight, leak-free seal. The combination of aluminum and rubber materials offers resistance to corrosion and flexibility to withstand vibrations and temperature changes common in Chevrolet Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models.

Included with the hose assembly are essential components such as gaskets and fittings, along with two slimline washer O-rings (24404), facilitating a straightforward installation and reliable sealing. This part is designed as a direct OE replacement, maintaining factory specifications without including a service port, muffler, or bracket, which aligns with the original equipment setup.

Applications and Common Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses in Chevrolet and GMC heavy-duty trucks
• Resolving low refrigerant pressure caused by leaks or hose deterioration
• Eliminating poor A/C performance due to compromised suction lines
• Preventing contamination and moisture ingress in the A/C system
• Restoring proper refrigerant flow for efficient air conditioning operation

Installation Notes and Tips

• Ensure compatibility with Chevrolet Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 models before installation
• Use the included gaskets and O-rings to achieve a proper seal and prevent leaks
• Inspect fittings and connections for damage or wear during replacement
• Follow manufacturer torque specifications for P-nut fittings to avoid overtightening
• Verify system pressure and refrigerant type (R134-a) compatibility prior to installation

Quality Assurance and Warranty

Four Seasons Hose Assembly 56427 meets OEM standards for fit and function, providing a reliable replacement part for your vehicle’s HVAC system. The product includes all necessary fittings and seals to ensure a proper installation. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality controls and are backed by the brand’s commitment to automotive HVAC component reliability.