• AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C
    • AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C

    AEM C.A.S. Cold Air Intake System, 2022-2026 Subaru WRX H4-2.4L F/I Turbo | 21-891C

    Vendor: AEM Induction
    Part Number: 21-891C
    $472.99

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    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
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    Product DetailsFAQReviewsRelated Products

    This AEM Performance Air Intake System lets a 2022-2026 Subaru WRX H4-2.4L F/I Turbo breathe more freely than the restrictive factory air intake housing allows, and is designed, tuned, and dyno-tested to produce more horsepower and torque. Air enters through an oversized, tapered AEM Dryflow synthetic washable filter for outstanding airflow, filtration, and performance. The intake tube is mandrel-bent aluminum with a durable gunmetal gray powder coat finish, and a custom-shaped heat shield with lid is included. The oil-free Dryflow filter runs up to 100,000 miles before cleaning under normal conditions.

    Additional Documentation
    Installation Instructions

    Specifications:

    • Filter Type: Tapered cylinder AEM Dryflow synthetic, washable and reusable
    • Intake Tube: Mandrel-bent aluminum, gunmetal gray powder coat finish
    • Heat Shield: Custom-shaped with lid
    • Filter Service Interval: Up to 100,000 miles under normal conditions
    • Part Number: 21-891C

    Vehicle Applications

    • 2022 Subaru WRX Base
    • 2023 Subaru WRX Base
    • 2024 Subaru WRX Base
    • 2022 Subaru WRX GT
    • 2023 Subaru WRX GT
    • 2024 Subaru WRX GT
    • 2025 Subaru WRX GT
    • 2026 Subaru WRX GT
    • 2022 Subaru WRX Limited
    • 2023 Subaru WRX Limited
    • 2024 Subaru WRX Limited
    • 2025 Subaru WRX Limited
    • 2026 Subaru WRX Limited
    • 2022 Subaru WRX Premium
    • 2023 Subaru WRX Premium
    • 2024 Subaru WRX Premium
    • 2025 Subaru WRX Premium
    • 2026 Subaru WRX Premium
    • 2026 Subaru WRX Series.Yellow
    • 2024 Subaru WRX TR
    • 2025 Subaru WRX TS
    • 2026 Subaru WRX TS

    FAQ

    What vehicles does the AEM 21-891C fit?

    The AEM 21-891C fits the turbocharged 2022-2026 Subaru WRX (H4-2.4L), including Base, Premium, Limited, GT, TR, TS, and Series.Yellow trims.

    Is this the WRX STI intake?

    No. This intake is built for the current-generation, standard-turbo Subaru WRX (2.4L); the WRX STI uses the separate AEM 21-863WR.

    Is the Dryflow filter washable?

    Yes. The tapered AEM Dryflow filter is an oil-free, synthetic, washable and reusable media rated for up to 100,000 miles between cleanings under normal driving conditions.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy
    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy
    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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