Four Seasons 66321 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66321

The Four Seasons Hose Assembly 66321 is designed specifically for Mercedes-Benz GLK300 and GLK350 models. This A/C refrigerant suction hose ensures reliable low-pressure refrigerant flow within your vehicle's HVAC system, maintaining optimal air conditioning performance.

• Constructed from durable aluminum and rubber materials
• Equipped with P-nut fittings on both ends for secure connections
• Compatible with R134a refrigerant systems
• Includes green round O-rings and necessary gaskets for leak-free installation
• Features a service port sized at 13 mm on the low-pressure side
• OE replacement part ensuring proper fit and function
• Part number 66321 for precise identification

Four Seasons Hose Assembly Product Line Details

The Hose Assembly product line by Four Seasons focuses on delivering complete hose solutions for HVAC systems. These assemblies combine high-quality materials like aluminum and rubber with pre-installed fittings and seals to simplify installation and ensure system integrity. The 66321 suction hose assembly is part of this line, providing a direct OE replacement that meets the specifications required for Mercedes-Benz GLK300 and GLK350 air conditioning systems.

Detailed Product Description

This A/C refrigerant suction hose assembly is engineered to handle low-pressure refrigerant flow within the HVAC system. Both ends feature P-nut fittings, facilitating a secure and leak-resistant connection. The hose is compatible with R134a refrigerant, the standard for many modern vehicles including the Mercedes-Benz GLK series. Included with the hose are green round O-rings (part numbers 24635 and 24681) and gaskets, which help maintain a tight seal and prevent refrigerant leaks. The assembly also includes a service port on the low-pressure side, sized at 13 mm, allowing for convenient system servicing without the need for additional adapters.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses in Mercedes-Benz GLK300 and GLK350
• Resolving refrigerant leaks caused by cracked or deteriorated hose materials
• Restoring proper low-pressure refrigerant flow for efficient air conditioning operation
• Eliminating issues related to faulty or missing O-rings and seals
• Facilitating maintenance with an integrated service port for refrigerant charging and diagnostics

Installation Notes and Tips

• Ensure the vehicle is compatible: Mercedes-Benz GLK300 or GLK350 models
• Verify that the refrigerant type is R134a before installation
• Inspect included O-rings and gaskets for damage prior to assembly
• Use proper torque specifications on P-nut fittings to avoid leaks
• Check the service port for accessibility during installation to facilitate future maintenance

Quality Assurance and Warranty

The Four Seasons Hose Assembly 66321 is an OE replacement part designed to meet or exceed original equipment specifications. It includes all necessary fittings, seals, and gaskets to ensure a reliable and leak-free installation. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship, supporting long-term durability and performance.