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Thread: H1 vs. H4 headlights - what is the difference?

  1. #1
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    H1 vs. H4 headlights - what is the difference?

    Being quite novice to the Porsche world; could someone please clarify what is the difference between H1 and H4 headlights?

    Thank you,
    Z.

  2. #2
    Senior Member
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    Basically the main differences are:

    H1
    - 2 separate bulbs & reflectors - 1 each for main & dip beams
    - 4 screws in chrome rim for adjusting beams (+ bottom retaining screw)

    H4
    - 1 bulb/reflector for combined main/dip beam
    - 2 screws in chrome rim for adjusting beams (+ bottom retaining screw)
    Andy

    Early 911S Reg #753
    R Gruppe #105

  3. #3
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    Thank you Andy, clear now.
    Z.

  4. #4
    Righteous Indignation 70SATMan's Avatar
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    Quote Originally Posted by Zeephyrin
    Being quite novice to the Porsche world; could someone please clarify what is the difference between H1 and H4 headlights?

    Thank you,
    Z.
    Oh, and the price too!
    Michael
    “Electricity is really just organized lightning”

    -Dusty 70S Coupe
    -S Registry #586

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