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Product Overview
AEM Dryflow 3.25in. X 5in. Round Tapered Air Filter from AEM Induction is identified by manufacturer part number 21-2110BF. This AEM universal air filter is selected by flange diameter, overall dimensions, and available installation space rather than vehicle appearance alone. Match every listed measurement to the intake tube and surrounding clearance before ordering.
The legacy title’s abbreviated dimensions are not a complete dimensional drawing. Confirm the supplied BF element’s exact height, flange engagement, sealing surface and clearance before selecting it; do not substitute measurements from a similarly numbered DK filter.
Key Features
- Designed for specification-matched custom intake applications; verify inlet diameter, outside dimensions, filter length, mounting space, and airflow direction.
- New AEM Induction component supplied in the configuration shown and described on this page.
- Exact application, dimensions, and included components should be verified before installation.
Fitment
This element is a universal or specification-matched component. Confirm dimensions, inlet or outlet size, filter shape, mounting space, sensors, hoses, and system compatibility before ordering.
Specifications
| Brand | AEM Induction |
|---|---|
| Manufacturer Part Number | 21-2110BF |
| Product Type | Air Filters - Universal Fit |
| Condition | New |
What's Included
The exact air filters - universal fit product identified on this page. Additional filters, tubes, couplers, clamps, heat shields, sensors, hardware, or service supplies are included only when specifically shown or stated.
About AEM Induction
AEM Induction develops vehicle-specific and universal intake, filtration, and supporting components for street and performance applications. Black Ops Auto Works organizes each listing by exact part number and available fitment data to support accurate product selection.
Related Parts
- AEM Dryflow Air Filter for 07-16 Audi A4 1.8L TFSI
- AEM DryFlow Conical Air Filter 5.5in Base OD / 4.75in Top OD / 5in Height
- Shop the complete AEM Induction collection
Frequently Asked Questions
What is the 21-2110BF?
It is the AEM Induction air filters - universal fit product described on this page in the listed configuration.
How do I confirm fitment?
Match the complete vehicle, engine, trim, intake layout, dimensions, sensors, and every application note before ordering.
Can I select this product by appearance alone?
No. Similar-looking intake and filter components can use different dimensions, connections, sensor provisions, mounting points, or applications.
What is included?
Only the components specifically identified on this product page are included; related filters, tubes, couplers, clamps, hardware, or service supplies may be separate.
Does the BF suffix prove the media, oiling or reinforcement?
No. Match the exact supplied element and its manufacturer instructions. The suffix alone does not establish media treatment, internal support or interchange with a DK version.
How should I maintain the filter?
Follow the manufacturer instructions for the exact supplied BF element. Its media and treatment are not independently established here; do not oil it or apply a DK cleaning procedure based on the suffix alone.
Is this product new?
Yes. The item condition is new unless this page explicitly states otherwise.
What should I verify before checkout?
Confirm the application, dimensions, included items, filter type, sensor provisions, emissions notes, and installation requirements.
Installation Instructions
- Confirm the exact supplied BF element and the complete application before disassembly.
- Inspect the component and compare every tube, filter, coupler, clamp, sensor provision, mounting point, and included item before modifying the vehicle.
- Follow current AEM Induction instructions and the vehicle service procedure for removal, installation, fasteners, sensors, hoses, and wiring.
- Keep intake components sealed and routed away from heat, sharp edges, moving parts, and direct water exposure where applicable.
- Check all connections, start the vehicle, inspect for leaks or warning lights, and verify safe operation before driving.
California Proposition 65 Warning
WARNING: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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