Four Seasons 65121 A/C Refrigerant Liquid Hose

Liquid Line Hose Assembly for R1234YF Systems

Four Seasons 65121 is an A/C refrigerant liquid hose assembly built with aluminum and rubber construction for service in R1234YF systems. It includes the gasket or seal, fittings, and service port, and it is configured as a liquid line hose assembly without a bracket.

Four Seasons Hose Assembly products are part of a focused HVAC line backed by more than 50 years of mobile A/C experience. This Four Seasons 65121 hose assembly is engineered and tested for dependable operation in late-model GM truck and SUV applications.

Key Features

• Part number: 65121
• Liquid line hose assembly for R1234YF refrigerant
• Aluminum / rubber construction
• P-nut fitting on both ends
• Gasket or seal included
• Fittings included
• Service port included
• Orifice tube included
• Without bracket

Application Details

Compatible with late-model Chevrolet, GMC, and Cadillac vehicles that use this liquid line configuration. Fits 2021-2025 Cadillac Escalade ESV, N/A; Fits 2021-2025 Chevrolet Tahoe, N/A; Fits 2021-2025 GMC Yukon, N/A; Fits 2021-2025 GMC Yukon XL, N/A; Fits 2021-2024 Cadillac Escalade, N/A; Fits 2019-2024 Chevrolet Cheyenne, N/A; Fits 2019-2024 Chevrolet Silverado 1500, N/A; Fits 2019-2024 GMC Sierra 1500, N/A; Fits 2022 Chevrolet Silverado 1500 LTD, N/A; Fits 2022 GMC Sierra 1500 Limited, N/A; Fits 2019 GMC Sierra 1500 Limited, N/A; Fits 2019 Chevrolet Silverado 1500 LD, N/A.

This part cross-references UAC HA113926C for the same application.

What This Part Helps Address

• Refrigerant line leaks at the liquid hose assembly
• Damaged or worn hose sections in the A/C circuit
• Failed seals or fittings at hose connection points
• Service port issues on the liquid line
• Incorrect hose configuration for R1234YF-equipped vehicles

Installation Notes and Tips

Verify the vehicle’s A/C refrigerant type, hose routing, and connection style before installation. This assembly uses P-nut fittings and includes an orifice tube, so confirm the existing system layout matches the part configuration. Replace any disturbed seals during service and evacuate and recharge the system according to factory procedures.

Quality Assurance

Four Seasons engineers and tests its HVAC components for long service life and trouble-free operation. The brand draws on over 50 years of mobile A/C experience, and part number 65121 is built to meet the demands of modern GM A/C service.