Four Seasons 56423 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 56423

The Four Seasons Hose Assembly 56423 is designed specifically for the A/C refrigerant suction line in Chevrolet and GMC trucks. Engineered with durable aluminum and rubber materials, this hose assembly ensures reliable low-pressure refrigerant flow for R134-a systems in Silverado 1500 and Sierra 1500 models.

• 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 gasket and fittings for proper sealing and installation
• OE replacement part designed for Chevrolet Silverado 1500 and GMC Sierra 1500

Detailed Product Description

This A/C refrigerant suction hose assembly from Four Seasons is part of the Hose Assembly product line, which focuses on delivering reliable hose and pipe solutions for automotive HVAC systems. The 56423 hose assembly is built to meet original equipment specifications, providing a direct replacement for the suction line in low-pressure A/C systems. Featuring P-nut fittings on both ends, it ensures a tight, leak-free connection. The included slimline washer O-rings (part number 24404) and fittings simplify installation and help maintain system integrity. This hose assembly does not include a service port, switch, bracket, or muffler, aligning with the original design for Chevrolet Silverado 1500 and GMC Sierra 1500 models.

Applications and Common Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Restoring proper low-pressure refrigerant flow in R134-a systems
• Eliminating poor A/C performance due to compromised suction lines
• Maintaining system pressure and preventing contamination

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 56423, ensure that the P-nut fittings are properly tightened to avoid leaks. Use the included slimline washer O-rings to create a secure seal at connection points. Since this assembly does not include a bracket or muffler, verify that existing mounting hardware is intact and properly supports the hose. It is recommended to inspect the entire A/C suction line system for any additional wear or damage during installation.

Quality Assurance and Warranty

Four Seasons manufactures the 56423 hose assembly to meet or exceed original equipment standards for Chevrolet and GMC vehicles. This part is an OE replacement designed for durability and reliable performance in HVAC systems using R134-a refrigerant. The product includes all necessary fittings and seals to ensure proper installation. Warranty details are provided by Four Seasons and typically cover defects in materials and workmanship under normal use.