AEM C.A.S 15-20 Acura TLX 3.5L V6 F/I Cold Air Intake System from AEM Induction is identified by manufacturer part number 21-871C. This AEM intake system is engineered for 2015-2020 Acura TLX and the other applications listed below, replacing restrictive factory intake components with application-specific airflow routing and serviceable filtration. The gunmetal gray aluminum intake tube is configured for the factory interfaces used by this application. AEM reports an estimated gain of 8.8 HP @ 6000 RPM for its documented test configuration. Confirm the complete vehicle, engine, trim, and emissions notes in the fitment section before ordering.
Confirm AEM Induction 21-871C against the complete vehicle, engine, trim, and every application note before ordering.
Use the store vehicle selector and current manufacturer application data for final confirmation.
| Brand | AEM Induction |
|---|---|
| Manufacturer Part Number | 21-871C |
| Product Type | Cold Air Intakes |
| Condition | New |
The exact cold air intakes product identified by AEM Induction 21-871C. Additional filters, tubes, couplers, clamps, heat shields, sensors, hardware, or service supplies are included only when specifically shown or stated.
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.
What is the 21-871C?
It is the AEM Induction cold air intakes 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 an intake require tuning?
Tuning requirements vary by vehicle and intake configuration. Review the product notes and consult a qualified tuner when airflow or sensor behavior changes.
How should I maintain the filter?
Follow the filter-specific manufacturer instructions. Cleaning and treatment procedures vary by filter media and should not be assumed.
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.
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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