ATP Parts GA-21 Cabin Air Filter

Carbon Cabin Air Filtration

ATP Parts GA-21 is a Premium Line cabin air filter for vehicles that use a 9.5 in. x 8 in. x 1.375 in. activated carbon filter element. It helps reduce dust, pollen, and outside odors entering the passenger compartment through the HVAC system.

The ATP Premium Line focuses on cleaner in-cabin air for daily driving. In applications such as Chevrolet Trax, Buick Encore, and Chevrolet Cruze, this carbon-activated cabin air filter supports a fresher interior environment by trapping airborne particles and absorbing unwanted odors before they reach the vents.

Key Features

• Activated carbon media helps absorb diesel fumes and other outside odors
• Static electrical charge helps capture airborne particles before they enter the cabin
• Premium Line construction for HVAC cabin air filtration
• Direct replacement size: 9.5 in. x 8 in. x 1.375 in.
• Fits a wide range of GM and Saab applications from 2010-2020
• ATP Parts GA-21 cross-references FRAM CF10775 for the same application

Product Details

ATP Parts GA-21 is a carbon activated cabin air filter built for HVAC systems that require odor control and particulate filtration. The activated carbon layer helps reduce common exterior odors, while the filter media captures fine debris moving through the ventilation intake. This Premium Line filter is a practical service part for drivers who want cleaner air inside the vehicle without changing the factory HVAC layout.

Compatible With Chevrolet Trax, Chevrolet Cruze, Chevrolet Sonic, Buick Encore, Buick LaCrosse, Buick Regal, Cadillac ATS, Cadillac CTS, Cadillac CT6, Cadillac XT5, Cadillac SRX, and other listed applications. ATP Parts GA-21 is also listed for select Cadillac ELR, Chevrolet Volt, Chevrolet Malibu, Chevrolet Spark, Buick Verano, Saab 9-4X, Saab 9-5, and Buick Allure models.

Common Problems This Filter Helps Address

• Dust and road debris entering the cabin through the HVAC intake
• Unwanted exterior odors such as exhaust or diesel fumes
• Reduced cabin air freshness during city driving or traffic
• Build-up of airborne particles in the passenger compartment
• Need for routine HVAC cabin air filter service

Installation Notes

Verify the filter dimensions and vehicle application before installation. This part is listed for multiple GM and Saab models, including 2010-2016 Chevrolet Cruze, 2013-2016 Buick Encore, and 2018 Chevrolet Trax applications. Follow the vehicle service procedure for accessing the cabin air filter housing and confirm the airflow direction if marked on the filter.

Quality Assurance

ATP Parts Premium Line cabin air filters use activated carbon media to support odor reduction and particulate capture in the HVAC system. The GA-21 is cataloged for direct-fit applications across the listed vehicles and cross-references FRAM CF10775 for the same application.