The AEM 21-788C cold air intake replaces the restrictive factory air filter and intake housing on specific Chevrolet Sonic models with a system engineered, tuned, and dyno-tested for horsepower and torque gains. Air is drawn through an oversized AEM Dryflow synthetic washable filter mounted in the stock air box location and shielded from underhood heat, while a mandrel-bent aluminum tube finished in gunmetal gray powder coat routes air to the throttle body. The system retains the factory mass air sensor for an easy installation with common hand tools.
Installation InstructionsVehicle Applications Sheet
Specifications:
- Filter Type: AEM Dryflow oil-free, washable, reusable synthetic media (cleanable up to 100,000 miles between services)
- Filter Shape: Tapered cylinder
- Tube Material: Mandrel-bent aluminum
- Finish: Gunmetal gray powder coat
- Warranty: AEM Lifetime Limited Warranty
- Emissions Note: Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards, while others are 50-state legal; check vehicle-specific legal status before purchase.
- Part Number: 21-788C
Vehicle Applications
- 2019 Chevrolet Sonic LS
- 2020 Chevrolet Sonic LS
- 2012 Chevrolet Sonic LT
- 2013 Chevrolet Sonic LT
- 2014 Chevrolet Sonic LT
- 2015 Chevrolet Sonic LT
- 2016 Chevrolet Sonic LT
- 2017 Chevrolet Sonic LT
- 2018 Chevrolet Sonic LT
- 2019 Chevrolet Sonic LT
- 2020 Chevrolet Sonic LT
- 2012 Chevrolet Sonic LTZ
- 2013 Chevrolet Sonic LTZ
- 2014 Chevrolet Sonic LTZ
- 2015 Chevrolet Sonic LTZ
- 2016 Chevrolet Sonic LTZ
- 2017 Chevrolet Sonic Premier
- 2018 Chevrolet Sonic Premier
- 2019 Chevrolet Sonic Premier
- 2020 Chevrolet Sonic Premier
- 2013 Chevrolet Sonic RS
- 2014 Chevrolet Sonic RS
- 2015 Chevrolet Sonic RS
- 2016 Chevrolet Sonic RS
FAQ
What years of Chevrolet Sonic fit the AEM 21-788C?
The AEM 21-788C fits 2012-2020 Chevrolet Sonic models, including LS, LT, LTZ, Premier, and RS trims depending on model year.
What color finish does this intake have?
The 21-788C features a mandrel-bent aluminum tube with a durable gunmetal gray powder coat finish.
Is the filter reusable?
Yes, the AEM Dryflow filter is oil-free, washable, and reusable for up to 100,000 miles between cleanings depending on driving conditions.

