Four Seasons 33665 A/C Receiver Drier

Overview of Four Seasons Filter Drier 33665

The Four Seasons Filter Drier 33665 is designed specifically for BMW models including the 525i, 535i, 735i, and 735iL. This A/C receiver drier plays a critical role in maintaining the efficiency and longevity of your vehicle's air conditioning system by filtering and drying refrigerant.

• Constructed from durable steel for long-lasting performance
• Pad mount inlet and outlet fittings with 3/8 inch diameter
• Includes desiccant material to absorb moisture and contaminants
• Body dimensions: 3.75 inches diameter and 8 inches length
• Comes with green O-rings (part number 24606) and necessary gaskets/seals
• Meets or exceeds OEM specifications for reliable fit and function
• New part, not remanufactured

Four Seasons Filter Drier Product Line Details

The Four Seasons Filter Drier line focuses on providing high-quality A/C accumulator and receiver driers that ensure clean and dry refrigerant flow within automotive HVAC systems. The 33665 part is engineered to integrate seamlessly with BMW air conditioning systems, offering a non-replaceable desiccant filter that helps prevent moisture-related damage and corrosion.

Product Description and Specifications

This A/C receiver drier features a steel body with a 3.75-inch diameter and an 8-inch length, designed to fit precisely in the HVAC system of select BMW vehicles. Both the inlet and outlet fittings are pad mount type with a 3/8 inch diameter, facilitating straightforward installation. The internal desiccant filter material effectively removes moisture from the refrigerant, which is essential for preventing system freeze-ups and corrosion. The part includes two green O-rings (part number 24606) and all necessary gaskets and seals to ensure a secure, leak-free connection. Note that the desiccant is not replaceable, and the washer is not included with this part.

Common Applications and Issues Addressed

• Prevents moisture buildup in the A/C system
• Filters out contaminants that can damage compressor and other components
• Helps maintain optimal refrigerant flow and pressure
• Reduces risk of corrosion inside the HVAC system
• Supports consistent cooling performance in BMW 525i, 535i, 735i, and 735iL models

Installation Notes and Tips

Installation requires proper handling of refrigerant lines and adherence to safety protocols. The pad mount fittings simplify connection to the existing system, but ensure the included O-rings and gaskets are properly seated to avoid leaks. The mounting bracket is not included, so verify compatibility with your vehicle’s mounting hardware. Since the desiccant is not replaceable, replace the entire unit if contamination or moisture issues are suspected.

Quality Assurance and Warranty

The Four Seasons Filter Drier 33665 meets or exceeds OEM standards for fit, form, and function, ensuring reliable performance in BMW HVAC systems. This new part is manufactured with quality materials and includes all necessary seals for installation. Warranty coverage details should be confirmed with the product documentation or supplier.