Four Seasons 65311 A/C Refrigerant Liquid Hose

Reliable A/C Refrigerant Liquid Hose for Chevrolet and GMC Trucks

The Four Seasons Hose Assembly 65311 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. This liquid line hose assembly ensures proper refrigerant flow within your vehicle's HVAC system, maintaining optimal air conditioning performance.

• Constructed from durable aluminum and rubber materials for long-lasting service
• Equipped with P-nut fittings on both ends for secure connections
• Compatible with R134a refrigerant type
• Includes gasket and fittings for a complete assembly
• Features an integrated orifice tube for precise refrigerant metering
• Designed without a bracket and service or switch ports

About the Four Seasons Hose Assembly Product Line

The Four Seasons Hose Assembly line focuses on providing high-quality hose assemblies tailored for HVAC systems in various vehicles. The 65311 part is part of this line, offering a reliable liquid line hose assembly that integrates essential components such as fittings and gaskets. This product line emphasizes compatibility and durability, ensuring proper refrigerant flow and system integrity for Chevrolet and GMC heavy-duty trucks.

Detailed Product Description

The Four Seasons 65311 A/C refrigerant liquid hose is engineered with a combination of aluminum and rubber to withstand the pressures and temperatures typical in automotive HVAC systems. Both ends feature P-nut fittings, facilitating a secure and leak-resistant connection. This hose assembly is designed for use with R134a refrigerant, the standard for many modern vehicles. It includes a built-in orifice tube, which plays a critical role in regulating refrigerant flow and maintaining system efficiency. The assembly comes with necessary gaskets and fittings, though it does not include a bracket or service port, aligning with specific OEM configurations for the Chevrolet Sierra and Silverado 2500 and 3500 HD models.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C liquid line hoses in Chevrolet Sierra 2500 HD and 3500 HD
• Restoring proper refrigerant flow in GMC Silverado 2500 HD and 3500 HD HVAC systems
• Resolving refrigerant leaks caused by cracked or corroded hose assemblies
• Improving A/C system performance by ensuring correct orifice tube function
• Maintaining system integrity after component failure or during HVAC system rebuilds

Installation Notes and Tips

When installing the Four Seasons 65311 hose assembly, ensure that all fittings and gaskets are properly seated to prevent leaks. The P-nut fittings require careful tightening to manufacturer specifications to avoid damage. Since this assembly does not include a bracket, verify existing mounting points for secure hose routing. It is recommended to evacuate and recharge the A/C system with R134a refrigerant after installation to maintain optimal performance.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet or exceed OEM standards for durability and performance. The 65311 hose assembly undergoes rigorous quality control to ensure reliable operation in heavy-duty Chevrolet and GMC trucks. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary by region and application.