Airtex 8K0 298 403 A A/C Receiver Drier Insert Dehydrator

The Airtex 8K0 298 403 A is a replacement A/C receiver drier insert — also commonly referred to as a dehydrator or drier insert — designed to restore proper function to your vehicle's air conditioning system. This insert is an essential component of any A/C service or repair.

The receiver/drier insert works by removing moisture from the refrigerant circulating through the A/C system. It uses a desiccant material to absorb humidity, protecting metal components and other system parts from corrosion and damage. In addition to moisture absorption, the unit contains an internal filter that traps contaminants that could otherwise harm or clog the system. It also serves as a reservoir for refrigerant and oil when the A/C system is not in operation.

Key Features:

• Functions as a moisture-absorbing dehydrator using desiccant material
• Filters contaminants to protect downstream A/C components
• Acts as a storage reservoir for refrigerant and compressor oil
• Compatible with R1234YF refrigerant systems
• Sold individually
• OEM cross-reference: 8K0-298-403-A / 8K0298403A

It is strongly recommended to replace the receiver drier insert any time the A/C system is opened for service. Exposure to ambient air — even briefly — can quickly saturate the desiccant, rendering it ineffective and leaving the rest of the system vulnerable to moisture damage. Including a new drier insert as part of every A/C service is considered best practice.