Acura TSX 2004-2008 2.4L RBB-3 Engine | K24A

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    High-performance Honda K24A RBB-3 engine imported from Japan 🇯🇵. Compression-tested and ready for installation—designed as a JDM replacement for 2004–2008 Acura TSX models originally equipped with the USDM K24A2 engine.

    Engine code: K24A (JDM replacement for K24A2)

    Cylinder-head designation: RBB-3

    Configuration: Inline-4 DOHC 16-valve i-VTEC

    Displacement: 2.4L (2354 cc)

    Fuel system: Multi-point programmed fuel injection (PGM-FI)

    Aspiration: Naturally aspirated

    Mileage: 45,000–65,000 miles (low-mileage JDM import)

    Compression ratio: Approximately 10.5:1 (factory specification; verified consistent compression across cylinders)

    Fits:

    • Acura TSX 2.4L (2004–2008)
    • FWD models
    • Select 6-speed manual and 5-speed automatic applications
    • Models originally equipped with the K24A2 engine

    The K24A RBB-3 is a performance-oriented member of Honda’s K-series family, offering responsive acceleration, strong midrange torque, smooth high-RPM operation, and proven long-term reliability. It is an excellent OEM-style replacement for first-generation Acura TSX models.

    JDM installations may require transferring the original USDM intake and exhaust manifolds, throttle body, fuel rail and injectors, wiring harness, ECU, sensors, emissions equipment, engine mounts and brackets, accessories, oil pan, valve cover, and flywheel or flexplate as needed. Components and electronic calibrations may differ between 2004–2005 and 2006–2008 models.

    This engine does not fit 2009-and-newer Acura TSX models without significant modifications. Fitment information is provided for reference only. Please confirm the engine code, RBB configuration, transmission type, and vehicle VIN with a certified mechanic before purchasing, or contact us and we’ll help confirm fitment.

    * Fitment list is provided for reference only. Please confirm fitment with a certified mechanic before purchasing to verify your exact engine model, or contact us and we’ll be happy to assist.

    ** Product image disclaimer : Images are for reference purposes only. Each engine and transmission is a unique used unit. Differences may include cosmetic condition, attached accessories, brackets, sensors, covers, wiring, or other external components. However, the engine or transmission shipped will match the model, engine code, and specifications stated in description.

    • ACHIEVING

      4.8

      average rating

    • With

      95%

      positive reviews

    • LESS THAN

      3%

      return rate

    Are your products tested?

    All of our JDM engines and transmissions are carefully tested and inspected before sale. They are first checked in Japan, then inspected again once they arrive in the U.S. to make sure they meet our quality standards.

    We take pride in offering reliable used JDM parts, and your satisfaction is always our priority.

    Does it come with a warranty?

    We offer a 90-day limited replacement warranty for engines, covering head and block.
    For automatic transmissions, 30-day limited replacement warranty.
    For manual transmissions, 10-day startup warranty from date of purchase.
    Some exceptions apply.

    For more details: refer to our warranty and return policy here.

    How fast is shipping?

    Orders are usually shipped within 24–48 hours after full payment is received.

    After fulfillment, delivery usually takes 1–10 business days, depending on the destination and carrier.

    What's the returns policy?

    We’re always happy to help if there’s an issue with your order. Since our products are used automotive parts, returns and warranty claims need to be reviewed and approved before anything is sent back.

    To start a return or warranty claim, please follow the steps on our return page here:
    How to Make a Return

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