Four Seasons 56406 A/C Refrigerant Discharge / Suction Hose Assembly

Overview of Four Seasons Hose Assembly 56406

The Four Seasons Hose Assembly 56406 is designed specifically for Chevrolet and GMC trucks, including the Sierra and Silverado series. This A/C refrigerant discharge and suction hose assembly ensures reliable HVAC system performance by maintaining proper refrigerant flow and pressure.

• Constructed with durable aluminum and rubber materials
• Compatible with R134a refrigerant type
• Includes gasket and multiple O-rings for secure sealing
• Features a P-nut fitting on both discharge and suction ends
• Equipped with a muffler and manifold for noise reduction and system efficiency
• Includes a switch service port but does not come with fittings or a bracket

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line from Four Seasons focuses on delivering precise replacement components for vehicle HVAC systems. This line emphasizes quality materials and exact fitment to ensure proper refrigerant flow and system integrity. The 56406 hose assembly is part of this line, offering a direct OE replacement solution for Chevrolet and GMC trucks, maintaining factory specifications and performance standards.

Detailed Product Description

The Four Seasons 56406 hose assembly is engineered with a combination of aluminum and rubber to provide durability and flexibility under varying operating conditions. It is designed for use with R134a refrigerant, the standard for many modern vehicle air conditioning systems. The assembly includes a gasket and a full set of O-rings—green o-ring [24676], slimline washers [24402 and 24404], and sealing washers [24354]—to ensure leak-free connections. Both the discharge and suction ends utilize P-nut fittings for secure attachment. Additionally, the assembly features a muffler and manifold to reduce noise and improve system efficiency. While the assembly includes a switch service port, it does not come with fittings or a mounting bracket, so those components must be sourced separately if needed.

Compatible Vehicles and Common Applications

• Chevrolet Sierra 1500, 1500 HD, 2500, 2500 HD, 3500
• GMC Sierra 1500, 1500 HD, 2500, 2500 HD, 3500
• Chevrolet Silverado 1500, 1500 HD, 2500, 2500 HD, 3500

This hose assembly is used primarily in the vehicle's HVAC system to facilitate the discharge and suction of refrigerant, ensuring proper air conditioning function. It addresses issues such as refrigerant leaks, reduced cooling efficiency, and noisy operation caused by damaged or worn hoses.

Common Issues Resolved by This Hose Assembly

• Refrigerant leaks due to cracked or worn hoses
• Reduced A/C cooling performance from improper refrigerant flow
• Noise and vibration caused by failing mufflers or manifolds
• Loss of system pressure from faulty seals or O-rings
• Incompatibility with R134a refrigerant systems

Installation Notes and Tips

When installing the Four Seasons 56406 hose assembly, ensure all O-rings and gaskets are properly seated to prevent leaks. Use appropriate tools to tighten the P-nut fittings without over-torquing, which can damage the fittings or hose ends. Since fittings and brackets are not included, verify that existing components are in good condition or replace as necessary. Confirm compatibility with your specific Chevrolet or GMC Sierra or Silverado model year before installation.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, meeting original equipment specifications for fit and function. The product includes all necessary sealing components to maintain system integrity. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.