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    Belt Pulley, crankshaft

    Product number: 21653131
    ART: 21653131 / EAN: 3358960112408

    CORTECO
    Advised products
    Price incl. vat.
    € 151,40
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    Leverdatum: 03-06-2026

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    Manufacturer Model Version Engine code Construction type Construction start Construction end Pk Power kw
    BMW BMW
    Manufacturer Productnumber
    BMW 11 23 2 247 565 , 11232247565
    Usage numbers
    CO21653131
    Belt Pulley, crankshaft

    The Belt Pulley, crankshaft (21653131) drives engine accessories while absorbing harmful crankshaft vibrations. Replacing a worn pulley with Porza quality restores smooth operation and protects vital engine components.

    FAQ

    A belt pulley for a crankshaft is a component mounted on the crankshaft that drives auxiliary systems via belts. Its function is to transfer rotational power from the engine to components such as the alternator, water pump, and power steering pump.

    Key specifications include pulley diameter, number of grooves, material, mounting type, and compatibility with the engine and belt system. It must ensure proper alignment and efficient power transmission.

    Replacement is necessary when the pulley is worn, damaged, or misaligned. Common symptoms include belt noise, slipping, vibration, or reduced performance of driven components.

    Porza offers a fit guarantee option where your vehicle details are checked against product specifications to ensure correct compatibility.

    Porza provides high-quality engine and belt drive components with fast delivery across Europe and options for online ordering or in-store pickup.

    If the fit guarantee is selected, compatibility is verified before shipping. If the product does not fit, it can be returned according to the return policy.

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    Venlo
    The Netherlands

    Willem de Rijkelaan 15a, 5616 HH
    Eindhoven
    The Netherlands

    info@porza.nl
    085 401 1901
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