Four Seasons 66859 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66859

The Four Seasons Hose Assembly 66859 is designed for reliable performance in automotive HVAC systems. This A/C refrigerant suction hose is engineered to meet the specific needs of Buick, Chevrolet, Oldsmobile, and Pontiac vehicles, including models like Cutlass, Cutlass Supreme, Grand Prix, Lumina, Monte Carlo, and Regal.

• Constructed from durable aluminum and rubber materials
• Features a male o-ring fitting on one end and a flange fitting on the other
• Compatible with R134-a refrigerant systems
• Includes green o-rings and necessary fittings for a secure seal
• Equipped with a bracket for proper mounting
• Designed as a low-pressure suction line with a 13 mm service port
• OE replacement part ensuring proper fit and function

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering precise HVAC hose and pipe solutions tailored for various vehicle makes and models. This line emphasizes quality materials and exact fitment, ensuring that components like the 66859 suction hose maintain system integrity and performance in automotive air conditioning systems.

Product Features and Specifications

The Four Seasons 66859 A/C refrigerant suction hose is constructed with a combination of aluminum and rubber to provide durability and flexibility. It features a male o-ring connection on one end and a flange connection on the other, designed to fit low-pressure suction lines in R134-a refrigerant systems. The hose assembly includes green o-rings ([24642] and [24622]) in quantities of two each, ensuring a tight seal to prevent leaks. A bracket is included to secure the hose in place, and the assembly comes with a 13 mm service port on the low-pressure side for maintenance access. This part is an OE replacement, making it suitable for Buick Cutlass, Chevrolet Lumina, Pontiac Grand Prix, and other compatible models.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses
• Resolving refrigerant leaks caused by degraded seals or fittings
• Restoring proper low-pressure refrigerant flow in HVAC systems
• Eliminating rattling or vibration issues due to missing or broken brackets
• Ensuring compatibility with R134-a refrigerant for system efficiency

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66859, ensure that all green o-rings are properly seated to prevent refrigerant leaks. The included bracket should be securely fastened to avoid hose movement or vibration. Verify that the male o-ring and flange connections are clean and free of debris before assembly. This hose is designed without a muffler or switch port, so no additional components are required for installation. Use appropriate tools to tighten fittings to manufacturer torque specifications.

Quality Assurance and Warranty

Four Seasons products are manufactured to meet or exceed OEM standards for fit, form, and function. The Hose Assembly 66859 is an OE replacement part, ensuring compatibility and reliability in the specified Buick, Chevrolet, Oldsmobile, and Pontiac models. While specific warranty details are not provided here, Four Seasons typically offers coverage against defects in materials and workmanship, supporting long-term performance in automotive HVAC systems.