Four Seasons 66858 A/C Refrigerant Suction Hose

Overview of Four Seasons Hose Assembly 66858

The Four Seasons Hose Assembly 66858 is designed specifically for Mercedes-Benz ML320 and ML350 models. This A/C refrigerant suction hose is engineered to meet original equipment specifications, ensuring reliable performance in your vehicle's HVAC system.

• Constructed from durable aluminum and rubber materials
• Features a flange end and a P-nut fitting end for secure connections
• Compatible with R134-a refrigerant systems
• Includes necessary gaskets and fittings for proper sealing
• Designed for low-pressure suction line applications without a switch or muffler

Four Seasons Hose Assembly Product Line

The Hose Assembly line by Four Seasons focuses on providing high-quality hose assemblies for automotive HVAC systems. These assemblies are built to match or exceed original equipment standards, offering dependable fitment and function. The 66858 part is part of this line, delivering a precise replacement for the suction line in Mercedes-Benz ML320 and ML350 vehicles.

Detailed Product Description

This A/C refrigerant suction hose assembly combines aluminum and rubber to provide durability and flexibility under low-pressure conditions. The hose features a flange on one end and a P-nut fitting on the other, ensuring a secure and leak-free connection within the HVAC system. It is designed for use with R134-a refrigerant, the standard for many modern vehicles. The assembly includes black O-rings (part numbers 24150 and 24623) to maintain a tight seal and prevent refrigerant loss. This hose assembly does not include a switch, muffler, or bracket, focusing solely on the suction line function.

Common Applications and Issues Addressed

• Replacement of worn or damaged A/C refrigerant suction hoses in Mercedes-Benz ML320 and ML350
• Resolving refrigerant leaks caused by cracked or deteriorated hoses
• Restoring proper low-pressure refrigerant flow in the HVAC system
• Eliminating poor A/C performance due to faulty suction line components
• Ensuring compatibility with R134-a refrigerant systems

Installation Notes and Tips

When installing the Four Seasons Hose Assembly 66858, ensure all O-rings are properly seated to prevent leaks. The flange and P-nut fittings should be tightened to manufacturer torque specifications. This hose assembly is designed without a service port or switch, so no additional electrical connections are required. Verify compatibility with your Mercedes-Benz ML320 or ML350 before installation.

Quality Assurance and Warranty

Four Seasons manufactures this hose assembly to meet original equipment standards, providing reliable performance and fitment. The part number 66858 is an OE replacement designed to maintain the integrity of your vehicle's HVAC system. While specific warranty details are not provided, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.