Four Seasons 66003 A/C Refrigerant Discharge Hose

Overview of Four Seasons Hose Assembly 66003

The Four Seasons Hose Assembly 66003 is designed specifically for Chevrolet and GMC heavy-duty trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. This A/C refrigerant discharge hose ensures reliable performance in your vehicle's HVAC system by using durable aluminum and rubber materials.

• Constructed from aluminum and rubber for durability and flexibility
• Compatible with R134a refrigerant systems
• Includes gasket, fittings, and bracket for secure installation
• Equipped with a switch service port (M10 x 1.25 thread size)
• O-rings included: slimline washer [24402] and green o-ring [24606]
• OE replacement part designed to meet original equipment specifications
• Features a P-nut fitting on the suction end
• Does not include a muffler or switch

Four Seasons Hose Assembly Product Line Details

The Four Seasons Hose Assembly product line focuses on providing complete hose assemblies for HVAC systems in various vehicle applications. This line includes components such as discharge lines with integrated fittings, brackets, and seals to facilitate straightforward replacement and maintain system integrity. The 66003 part number is part of this line, offering a direct OE replacement for heavy-duty Chevrolet and GMC trucks.

Detailed Product Description

The Four Seasons 66003 A/C refrigerant discharge hose is engineered to handle the demands of R134a refrigerant in heavy-duty truck HVAC systems. Its aluminum and rubber construction balances strength and flexibility, reducing the risk of leaks or damage under pressure. The included gasket and fittings ensure a tight seal, while the bracket provides secure mounting to prevent movement or vibration. The hose assembly features a switch service port with an M10 x 1.25 thread size, allowing for easy integration with existing system components. Two O-rings, a slimline washer and a green o-ring, are included to maintain proper sealing at connection points. This hose assembly is designed without a muffler and does not include the switch itself, focusing on the discharge line function.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant discharge hoses in Chevrolet Sierra 2500 HD and 3500 HD
• Repair of leaks caused by cracked or deteriorated hose materials
• Restoration of proper refrigerant flow in Silverado 2500 HD and 3500 HD HVAC systems
• Elimination of rattling or loose hose assemblies with included bracket
• Ensuring compatibility with R134a refrigerant systems in heavy-duty trucks

Installation Notes and Tips

• Verify compatibility with your specific Chevrolet or GMC heavy-duty truck model before installation
• Use the included gasket and O-rings to ensure a proper seal and prevent refrigerant leaks
• Secure the hose assembly using the provided bracket to minimize vibration and wear
• Check the switch service port thread size (M10 x 1.25) for proper switch or sensor installation if applicable
• Inspect all fittings and connections for tightness after installation

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66003 is an OE replacement part manufactured to meet original equipment standards for fit, form, and function. It undergoes quality control processes to ensure durability and reliability in heavy-duty HVAC applications. Warranty details are provided by Four Seasons and typically cover defects in material and workmanship under normal use conditions.