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    VehiclesUpdated Jan 3, 2026MCIOfficial source

    MCI J4500 recall in Canada: Fuel system may leak

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    In plain language

    This recall affects certain 2020 MCI J4500 buses in Canada equipped with a Cummins X12 diesel engine. The fuel tubes between the fuel rail and injectors may crack and leak fuel. A fuel leak could create a fire risk.

    What to do

    • Contact your dealer or manufacturer to schedule the free repair.
    • Take your bus to a Cummins authorized service center to replace the fuel tubes and install vibration isolators.

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    Affected products

    • J4500

      Model: 2020

    Why this matters

    Fuel leak creates fire risk

    Do I have this product?

    This recall only applies to specific products. Follow the steps below to check.

    1. 1

      Check the product name

      Make sure your product name matches one of the affected products listed above.

    2. 2

      Check the model number

      Model numbers are typically on the product label or packaging.

      Affected models: 2020

    If your product matches one or more of the details above, it may be affected by this recall.

    If your product does not match these details, it is not affected by this recall.

    When in doubt, always check the official notice.

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    Frequently Asked Questions

    Why was this product recalled?

    Fuel leak creates fire risk

    What should consumers do?

    Contact your dealer or manufacturer to schedule the free repair. Take your bus to a Cummins authorized service center to replace the fuel tubes and install vibration isolators.

    Where was the product sold?

    This product was sold in Canada. For specific retailers or distribution areas, please check the official recall notice linked on this page.

    Is there a health risk?

    Yes, there may be a health risk. Fuel leak creates fire risk

    When was this product recalled?

    This product was recalled on June 15, 2021.

    Is the MCI brand affected by this recall?

    Yes, MCI products are affected by this recall. This recall affects certain 2020 MCI J4500 buses in Canada equipped with a Cummins X12 diesel engine. The fuel tubes between the fuel rail and injectors may crack and leak fuel. A fuel leak could create a fire risk.