Four Seasons 56998 A/C Refrigerant Discharge Hose

Overview of Four Seasons Hose Assembly 56998

The Four Seasons Hose Assembly 56998 is a high-pressure A/C refrigerant discharge hose designed for select Cadillac, Chevrolet, and GMC vehicles. Engineered with durable aluminum and rubber materials, this hose assembly supports both R134a and R1234yf refrigerants, ensuring compatibility with modern automotive air conditioning systems.

• Constructed from aluminum and rubber for durability and flexibility
• Compatible with R134a and R1234yf refrigerants
• Includes gasket, fittings, and O-rings for a complete installation
• Equipped with a switch service port (M10 x 1.25 thread size)
• Designed as a high-pressure discharge line without bracket or muffler
• OEM 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 reliable hose and pipe solutions for automotive HVAC systems. This line includes assemblies designed to meet or exceed original equipment specifications, providing direct replacements for factory parts. The 56998 discharge hose assembly is part of this line, offering a precise fit and necessary components such as gaskets and fittings to streamline installation and maintain system integrity.

Detailed Product Description

The Four Seasons 56998 A/C refrigerant discharge hose is engineered to handle high system pressures typical in automotive air conditioning systems. It features a combination of aluminum and rubber materials that balance strength and flexibility, reducing the risk of leaks or damage under thermal expansion and vibration. This hose assembly includes two slimline washer O-rings (part number 24402) and one green O-ring (part number 24606), ensuring a secure seal. The included fittings and gasket simplify installation, while the integrated switch service port (thread size M10 x 1.25) allows for easy connection of pressure switches, although the switch itself is not included. The hose is designed without a bracket or muffler, and the suction end uses a P-nut fitting for compatibility with specified vehicle models.

Compatible Vehicles and Applications

• Cadillac Escalade and Escalade ESV
• Chevrolet Cheyenne, Silverado 1500, 1500 LD, 2500, 2500 HD, 3500 HD, Suburban 3500 HD, Tahoe
• GMC Sierra, Sierra 1500, Sierra 1500 Limited, Yukon, Yukon XL

This hose assembly is intended for use as a direct replacement part in the air conditioning system's refrigerant discharge line, maintaining proper refrigerant flow and system pressure.

Common Issues Addressed by This Hose Assembly

• Leaks or cracks in the original A/C refrigerant discharge hose
• Failure of seals or O-rings causing refrigerant loss
• Damage from corrosion or wear in high-pressure A/C lines
• Incompatibility with newer refrigerants like R1234yf
• Malfunctioning or missing switch service port connections

Installation Notes and Tips

When installing the Four Seasons 56998 hose assembly, ensure all O-rings and gaskets are properly seated to prevent leaks. The included fittings should be tightened to manufacturer torque specifications. Note that the switch is not included and must be sourced separately if required. This hose assembly does not include a bracket or muffler, so verify existing mounting points and supports on the vehicle. Compatible with vehicles using R134a or R1234yf refrigerants, confirm refrigerant type before installation.

Quality Assurance and Warranty

Four Seasons provides this hose assembly as an OEM replacement part, manufactured to meet original equipment standards. The product includes all necessary seals and fittings to ensure a reliable installation. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.