Four Seasons 66019 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66019

The Four Seasons Hose Assembly 66019 is designed specifically for the A/C refrigerant suction line in select Chevrolet and GMC heavy-duty trucks. Engineered with durable aluminum and rubber materials, this hose assembly ensures reliable low-pressure refrigerant flow for R134-a systems in vehicles like the Silverado 2500 HD and Sierra 3500 HD.

• Constructed from aluminum and rubber for durability and flexibility
• Features a male p-nut fitting on one end and a sealing washer on the other
• Includes gasket and fittings for a complete installation
• Compatible with R134-a refrigerant systems operating under low pressure
• OE replacement part designed for Chevrolet and GMC 2500 and 3500 HD models

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering precise HVAC hose and pipe components tailored for vehicle-specific applications. This line emphasizes quality materials and exact fitment to maintain system integrity and performance. The 66019 suction hose assembly is part of this line, providing a direct replacement solution for the refrigerant suction line in heavy-duty Chevrolet and GMC trucks.

Detailed Product Description

This A/C refrigerant suction hose assembly is constructed with a combination of aluminum and rubber, offering both strength and flexibility to withstand the demands of the HVAC system. The hose features a male p-nut fitting on the suction end and a sealing washer on the opposite end, ensuring a secure and leak-free connection. It is designed for use with R134-a refrigerant and supports low-pressure system operation. The assembly includes two slimline washer O-rings (part number 24404) and all necessary fittings, but does not include a bracket, muffler, or service port switch. This part is an exact OE replacement, making it suitable for maintaining factory specifications in Chevrolet Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD models.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses
• Resolving refrigerant leaks caused by cracked or deteriorated hose material
• Restoring proper refrigerant flow in low-pressure A/C systems
• Eliminating poor HVAC performance due to faulty suction line components
• Maintaining system integrity after component failure or during HVAC system overhaul

Installation Notes and Tips

• Ensure the vehicle is compatible: Chevrolet and GMC 2500/3500 HD models
• Verify refrigerant type is R134-a before installation
• Use included gasket and fittings to secure connections and prevent leaks
• Inspect O-rings for damage and replace if necessary during installation
• Do not reuse old fittings or seals to maintain system integrity

Quality Assurance and Warranty

Four Seasons Hose Assembly 66019 is manufactured to meet or exceed OEM specifications for fit, form, and function. This part is an exact OE replacement designed to maintain the performance and reliability of the vehicle’s HVAC system. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in material and workmanship. Always consult product documentation or the manufacturer for complete warranty information.