Four Seasons 55890 A/C Refrigerant Discharge Hose

Overview of Four Seasons Hose Assembly 55890

The Four Seasons Hose Assembly 55890 is designed specifically for BMW M3 models requiring a reliable A/C refrigerant discharge hose. Engineered with durable aluminum and rubber materials, this hose assembly supports high-pressure R134a refrigerant systems to maintain optimal air conditioning performance.

• Constructed from aluminum and rubber for durability and flexibility
• Compatible with R134a refrigerant systems
• High-pressure discharge line with included fittings and gasket
• Equipped with one 16 mm high-side service port without a switch port
• Includes two O-rings and a P-nut fitting suction end type
• OE replacement part designed for BMW M3 vehicles

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering precise replacement hoses and pipes for HVAC systems. This line emphasizes compatibility with original equipment specifications, ensuring that each hose assembly, including part number 55890, meets the demands of high-pressure refrigerant discharge applications without additional brackets or mufflers.

Detailed Product Description

This A/C refrigerant discharge hose assembly is engineered to handle the high-pressure side of the BMW M3’s air conditioning system. The combination of aluminum and rubber materials provides a balance of strength and flexibility, reducing the risk of leaks or damage under system pressure. The included fittings and gasket ensure a secure connection, while the service port allows for easy maintenance and refrigerant charging. The absence of a switch port and bracket simplifies installation and compatibility with the vehicle’s existing HVAC setup.

Common Applications and Issues Addressed

• Replacement of worn or leaking high-pressure A/C discharge hoses
• Restoring proper refrigerant flow in BMW M3 R134a systems
• Resolving A/C system pressure loss due to damaged hoses
• Eliminating refrigerant leaks caused by degraded seals or fittings
• Facilitating maintenance with an accessible high-side service port

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 55890 on a BMW M3, ensure the system is fully depressurized before removal of the old hose. Verify that the included O-rings are properly seated to prevent leaks. The P-nut fitting suction end type requires careful tightening to manufacturer torque specifications. Since this assembly does not include a bracket or muffler, confirm existing mounting points are secure and intact. The service port size of 16 mm is compatible with standard A/C service tools.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OE replacement part, meeting original equipment standards for fit and function. The inclusion of all necessary fittings and seals supports reliable performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship, ensuring confidence in the durability of part number 55890 for BMW M3 applications.