Introduction
The Four Seasons 83235 Filter Drier Desiccant Bag Kit with Plug is a critical component in an automotive air conditioning (AC) system. Its primary function is to absorb moisture and filter out contaminants from the refrigerant, protecting the AC system from damage and ensuring efficient operation. This manual provides essential information for the proper handling and installation of this component.

Image 1: The Four Seasons 83235 Filter Drier Desiccant Bag Kit, showing the desiccant bag, filter, and plug assembly.
Safety Precautions and Installation
Installation of AC system components should ideally be performed by a qualified automotive technician. AC systems contain refrigerants under pressure, which can cause injury if not handled correctly. Always wear appropriate personal protective equipment, including safety glasses and gloves, when working on an AC system.
General Guidelines:
- Ensure the AC system is fully discharged and evacuated before attempting to remove or install any components.
- Replace the filter drier whenever the AC system is opened for service, especially after compressor replacement or system contamination.
- Minimize exposure of the new desiccant bag to atmospheric moisture. Install immediately after opening the packaging.
- Use only the specified refrigerant and oil type for your vehicle's AC system.
Installation Steps (General):
- Locate the existing filter drier or receiver drier unit in your vehicle's AC system.
- Carefully remove the old filter drier, ensuring no debris enters the system.
- Unpack the Four Seasons 83235 Desiccant Bag Kit.
- Insert the desiccant bag and filter assembly into the receiver drier housing.
- Secure the plug component, ensuring a tight seal. The plug often features an O-ring for sealing.
- Once the new desiccant bag kit is installed, evacuate the AC system using a vacuum pump to remove all air and moisture.
- Recharge the AC system with the correct amount and type of refrigerant and lubricant according to vehicle manufacturer specifications.
- Perform a leak test to ensure all connections are sealed.

Image 2: Close-up of the plug component from the Four Seasons 83235 kit, showing the hexagonal drive and "DO NOT OPEN UNDER PRESSURE" warning.
Maintenance
The Four Seasons 83235 Filter Drier Desiccant Bag Kit is a replacement component and is not designed for user maintenance or servicing. Its function is to absorb moisture and contaminants until its capacity is reached. It should be replaced as part of routine AC system service or whenever the system is opened for major repairs.
Troubleshooting
A failing desiccant bag itself does not typically present direct symptoms, but its failure to absorb moisture can lead to broader AC system issues. If your AC system is experiencing problems after installation or if you suspect a faulty desiccant bag, consider the following:
- Poor Cooling Performance: This can indicate moisture in the system, leading to ice formation and restricted refrigerant flow.
- Compressor Failure: Moisture and contaminants can damage the compressor.
- System Leaks: Ensure all connections are properly sealed after installation.
- Incorrect Refrigerant Charge: An improper charge (too high or too low) will affect system performance.
For any persistent AC system issues, it is recommended to consult a certified automotive AC specialist for diagnosis and repair.
Specifications
| Brand: | Four Seasons |
| Model: | Filter Drier Desiccant Bag Kit w/ Plug |
| Item Model Number: | 83235 |
| Item Weight: | 6.4 ounces |
| Product Dimensions: | 12.13 x 3.5 x 3.38 inches |
| Manufacturer Part Number: | 83235 |
| First Available Date: | July 4, 2017 |
Warranty Information
Specific warranty details for the Four Seasons 83235 Filter Drier Desiccant Bag Kit are not provided in this document. Please refer to the product packaging or the official Four Seasons website for the most current warranty policy and registration information.
Support
For technical assistance, installation questions, or further product information, please contact Four Seasons customer support or consult a professional automotive AC service center. Always provide the model number (83235) when seeking support.
You can find contact information for Four Seasons on their official website: www.4s.com





