Four Seasons 83421 A/C Receiver Drier / Desiccant Element

Overview

Four Seasons 83421 is a desiccant cartridge kit for automotive A/C receiver drier service. It is built as a filter drier desiccant cartridge kit with plug, using a plastic desiccant element and an included gasket or seal for a proper service replacement.

Compatible with Tesla S, Tesla X, Tesla Y, and Tesla 3 applications, this Four Seasons 83421 part is focused on moisture control inside the air conditioning system. The Dessicant Bag Kit line is backed by more than 50 years of mobile A/C experience and is engineered and tested for dependable operation.

Key Features

• Desiccant cartridge kit for A/C receiver drier service
• Plastic desiccant construction
• Includes gasket or seal
• Filter drier style with plug
• Four Seasons 83421 replacement part

Detailed Description

This A/C receiver drier desiccant element is used in Tesla S, Tesla X, Tesla Y, and Tesla 3 HVAC service applications where moisture removal is critical to system performance. The cartridge measures 6.88 inches in length and 1.17 inches in diameter, with a 50-gram desiccant charge. Four Seasons 83421 is a direct service component for restoring the desiccant function inside the receiver drier assembly.

The Dessicant Bag Kit product line focuses on practical A/C service parts built for repeatable fit and function. For Tesla 3, Tesla Y, and Tesla S applications, the part number 83421 is a relevant reference when matching the correct desiccant cartridge kit to the vehicle’s A/C system configuration.

Common Issues It Can Address

• Moisture contamination in the A/C refrigerant circuit
• Reduced receiver drier desiccant capacity
• Service needs after opening the A/C system
• Degraded moisture control in the HVAC system
• Replacement of a worn desiccant cartridge

Installation Notes and Tips

Verify the vehicle’s A/C system configuration before ordering, especially for Tesla 3 models with heat pump equipment and the listed 2021 Tesla S application with a February 2021 build date. Match the cartridge dimensions and service style to the original receiver drier assembly. Follow the vehicle service procedure for refrigerant recovery, system opening, and reassembly.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, supported by more than 50 years of mobile A/C experience. Part number 83421 is cross-referenced with Dorman - HELP 83421 for the same application.