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    Alternator Regulator

    Product number: 5DR 009 728-261
    ART: 5DR 009 728-261 / EAN: 4082300394948

    HELLA
    Advised products
    Price incl. vat.
    € 115,68

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    Leverdatum: 25-04-2026

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    Manufacturer Model Version Engine code Construction type Construction start Construction end Pk Power kw
    AUDI AUDI
    BMW BMW
    CITROËN CITROËN
    FIAT FIAT
    MERCEDES-BENZ MERCEDES-BENZ
    OPEL OPEL
    PEUGEOT PEUGEOT
    RENAULT RENAULT
    SEAT SEAT
    SKODA SKODA
    VOLVO VOLVO
    VW VW
    Manufacturer Productnumber
    SEAT 028 903 029 M , 028903029M
    SEAT 028 903 029 MX , 028903029MX
    SEAT 038 903 018 P , 038903018P
    SEAT 047 903 015 G , 047903015G
    SEAT 047 903 015 H , 047903015H
    SEAT 047 903 018 , 047903018
    SEAT 047 903 018 A , 047903018A
    SEAT 047 903 018 AX , 047903018AX
    SEAT 047 903 018 X , 047903018X
    SEAT 389 030 18 , 38903018
    SEAT 389 030 23 , 38903023
    SEAT 479 038 03 , 47903803
    VW 028 903 029 M , 028903029M
    VW 028 903 029 MX , 028903029MX
    VW 038 903 018 , 038903018
    VW 038 903 018 P , 038903018P
    VW 038 903 023 , 038903023
    VW 047 903 015 G , 047903015G
    VW 047 903 015 H , 047903015H
    VW 047 903 018 , 047903018
    VW 047 903 018 A , 047903018A
    VW 047 903 018 AX , 047903018AX
    VW 047 903 018 X , 047903018X
    VW 047 903 803 , 047903803
    SKODA 028 903 029 M , 028903029M
    SKODA 028 903 029 MX , 028903029MX
    SKODA 038 903 018 P , 038903018P
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    SKODA 047 903 018 , 047903018
    SKODA 047 903 018 A , 047903018A
    SKODA 047 903 018 AX , 047903018AX
    SKODA 047 903 018 X , 047903018X
    SKODA 389 030 18 , 38903018
    SKODA 389 030 23 , 38903023
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    AUDI 028 903 029 M , 028903029M
    AUDI 028 903 029 MX , 028903029MX
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    Alternator Regulator

    The Alternator Regulator (5DR 009 728-261) regulates alternator voltage for safe battery charging. Replacing it with a Porza-quality regulator restores stable power and electrical system protection.  

    FAQ

    An alternator regulator, also known as a voltage regulator, is an electronic component that controls the output voltage of the alternator. Its function is to maintain a stable voltage level to protect the battery and electrical systems from overcharging or undercharging.


    Key specifications include voltage rating, current capacity, connector type, mounting design, and compatibility with the alternator and vehicle. It must provide precise voltage control under varying operating conditions.


    Replacement is necessary when the regulator fails or becomes inaccurate. Common symptoms include battery overcharging, undercharging, fluctuating voltage, warning lights, or electrical system issues.


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


    Porza provides high-quality electrical 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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