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Audi A4 B5 1.8 ADR: Alternator Swap - 90 VALEO to 120 BOSCH (046 903 015 F) for Car-Audio Upgrade

OpenTheGates 7971 8
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  • #1 17319430
    OpenTheGates
    Level 8  
    Hello, I have a problem with the alternator in my a4 and I would like to replace it with 90 VALEO for 120 BOSCH and with the numbers 046 903 015 F, the problem is that I do not know if it will fit. The reason for the replacement is undercharging the battery and the desire to make a good car-audio, because the current ori speakers are ending their lives. I am adding an attachment altka 120 Bosch that I have the opportunity to buy.

    Audi A4 B5 1.8 ADR: Alternator Swap - 90 VALEO to 120 BOSCH (046 903 015 F) for Car-Audio Upgrade
    Attachments:
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  • #2 17319636
    Strumien swiadomosci swia
    Level 43  
    Buy as it is supposed to be from the ADR 120A engine.
    0124515034 0123510033
  • #3 17319802
    OpenTheGates
    Level 8  
    Strumien swiadomosci swia wrote:
    Buy as it is supposed to be from the ADR 120A engine.
    0124515034 0123510033


    And what is with the fact that I have to look for what you gave, I have looked at aledrogo and there are no such, also on olx: / I feel sorry for the battery because I just bought ...
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  • #4 17319805
    Strumien swiadomosci swia
    Level 43  
    The one you gave is not from ADR?
  • #5 17319865
    OpenTheGates
    Level 8  
    Strumien swiadomosci swia wrote:
    The one you gave is not from ADR?


    The one I gave is from 1.9tdi vw passat

    I have 1.8 adr petrol.
    My altek is number: 058903016B it is valeo 90A
  • #6 17325105
    OpenTheGates
    Level 8  
    Can anyone help me? : /

    In this altk in the picture, the pulley has 6 ditches and a diameter of 65 mm, my current pulley has a diameter of 57 mm and has 5 ditches, which disqualifies this alternator because after changing the pulley it may not load properly. And the DF contact is the output contact to the ECU that does not need to be connected.

    So still the search continues ....
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  • #7 17325151
    andrzej20001
    Level 43  
    SG12B018 is also suitable for Valeo.
  • #8 17374876
    OpenTheGates
    Level 8  
    andrzej20001 wrote:
    SG12B018 is also suitable for Valeo.


    Only in this altek there is an input for the 2pin plug, in the current one I do not have such a thing, it fits mechanically but electrically not necessarily, unless you can do something about it
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  • #9 17374883
    carrot
    Moderator of Cars  
    Check if it fits mechanically (the fixings), the rest is a secondary matter
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Topic summary

The discussion revolves around the replacement of an alternator in an Audi A4 B5 1.8 ADR, specifically swapping a 90A VALEO alternator for a 120A BOSCH model (046 903 015 F). The user is facing issues with undercharging the battery and aims to upgrade the car audio system. Concerns arise regarding the compatibility of the new alternator, particularly the differences in pulley size and electrical connections. Responses suggest checking mechanical fitment and compatibility of electrical connections, with some users providing alternative part numbers and recommendations for further searches.
Summary generated by the language model.
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