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    Control Unit, glow time

    Product number: 4RV 008 188-721
    ART: 4RV 008 188-721 / EAN: 4082300816518

    HELLA
    Advised products
    Price incl. vat.
    € 76,58
    Add to cart
    Leverdatum: 01-05-2026

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    Control Unit, glow time

    The Control Unit, glow time (4RV 008 188-721) regulates glow plug operation for reliable diesel cold starts. Replacing a faulty controller restores correct heating and smoother engine performance. Use Porza’s smart search to find the correct unit.

    FAQ

    A glow time control unit is an electronic component in diesel engines that manages the operation and timing of the glow plugs. Its function is to control how long the glow plugs are activated before and after engine start, ensuring optimal preheating for reliable cold starts and efficient combustion. It communicates with the engine control unit (ECU) to adjust glow time based on temperature and operating conditions.


    Key specifications include operating voltage (typically 12V or 24V), number of glow plug outputs, connector type, and compatibility with the vehicle’s ECU. The unit must handle high current loads and operate reliably in harsh engine environments, including temperatures ranging from -40°C to +125°C. Integrated electronics must provide precise timing and protection against overload or short circuits.


    Replacement is necessary when the unit fails to control the glow plugs correctly. Symptoms may include difficult cold starts, extended cranking, glow plug warning lights, or fault codes related to the glow system. A faulty control unit may cause glow plugs to activate for too long or not at all.


    Porza offers a fit guarantee option where your vehicle details, such as license plate or VIN, are checked against product specifications. This ensures the control unit matches your engine’s glow plug system, including electrical connections and control requirements.


    Porza offers a fit guarantee option where your vehicle details, such as license plate or VIN, are checked against product specifications. This ensures the control unit matches your engine’s glow plug system, including electrical connections and control requirements.


    Porza supplies high-quality engine management components with fast delivery across Europe. Customers can order online or choose in-store pickup in the Netherlands, Germany, or Belgium. This allows quick access to essential parts for both professional workshops and individual users.


    If you select the fit guarantee, Porza verifies compatibility before shipment. If the product does not fit or meet expectations, it can be returned according to the return policy. This ensures a reliable and risk-free purchasing experience.


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