Four Seasons 56426 A/C Refrigerant Discharge / Suction Hose Assembly

Reliable A/C Refrigerant Hose Assembly for Select GM and Isuzu Models

The Four Seasons Hose Assembly part number 56426 is designed to provide dependable performance for your vehicle's HVAC system. Engineered for use with R134a refrigerant, this discharge and suction hose assembly ensures proper refrigerant flow and system integrity in compatible Buick, Chevrolet, GMC, Isuzu, and Saab models.

• Constructed from durable aluminum and rubber materials for long-lasting service
• Includes essential gaskets and multiple O-rings for secure sealing
• Equipped with P-nut fittings on both discharge and suction ends for reliable connections
• Features a manifold and a switch service port for system compatibility
• Designed as an OEM replacement part for accurate fit and function

Four Seasons Hose Assembly Product Line Overview

The Hose Assembly line by Four Seasons focuses on delivering precise HVAC hose and pipe solutions tailored to specific vehicle applications. This product line emphasizes quality materials and exact fitment, ensuring that each hose assembly meets or exceeds original equipment specifications. Part number 56426 exemplifies this approach by combining aluminum and rubber construction with included sealing components to maintain system efficiency and durability.

Detailed Product Description and Features

This A/C refrigerant discharge and suction hose assembly is compatible with Buick, Chevrolet, GMC, Isuzu, and Saab vehicles, including models such as the 9-7x, Ascender, Envoy, Envoy XL, Envoy XUV, Rainier, Trailblazer, and Trailblazer EXT. The assembly is designed for use with R134a refrigerant and includes a manifold and switch service port to facilitate system diagnostics and maintenance. The hose features P-nut fittings on both ends, ensuring secure and leak-free connections. Included are multiple O-rings—two slimline washers (24404), one slim line sealing washer (24401), and two sealing washers (24354 and 24353)—to provide a tight seal and prevent refrigerant loss. While fittings are not included, the assembly is ready for installation without a bracket or muffler.

Common Applications and Issues Addressed

• Replacement of worn or leaking A/C refrigerant discharge and suction hoses
• Restoring proper refrigerant flow in Buick Envoy and GMC Trailblazer HVAC systems
• Resolving refrigerant leaks caused by damaged or degraded hose assemblies
• Maintaining system pressure and preventing contamination in Chevrolet Rainier A/C units
• Supporting efficient air conditioning performance in Isuzu Ascender and Saab 9-7x vehicles

Installation Notes and Tips

• Ensure compatibility with your specific vehicle make and model before installation
• Use the included gaskets and O-rings to achieve a proper seal and prevent leaks
• Check that P-nut fittings are tightened to manufacturer torque specifications
• Inspect the HVAC system for any additional worn components during replacement
• Professional installation is recommended to maintain system integrity and performance

Quality Assurance and Warranty Information

Four Seasons part number 56426 is manufactured to meet original equipment standards, providing reliable fit and function for your vehicle's HVAC system. The product includes all necessary sealing components to ensure a secure installation. While specific warranty details may vary, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product documentation for exact warranty terms.