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Thread: Are these Bosch 9012 HIR bulbs real HIR ??

  1. #1

    Default Are these Bosch 9012 HIR bulbs real HIR ??

    Are these bulbs the real deal as in they have the reflective metal inside to generate more light??

    The price seems great.

    https://www.amazon.com/Bosch-9012-St...ords=9012+bulb

    I have a 9006 and modified to use 9012 Sylvania xtra Vision which were quite good but pricey.

  2. #2
    Moderator Alaric Darconville's Avatar
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    Default Re: Are these Bosch 9012 HIR bulbs real HIR ??

    Quote Originally Posted by weedkill3 View Post
    Are these bulbs the real deal as in they have the reflective metal inside to generate more light??
    If the bulb meets the standard for the HIR1 or HIR2 (filament size, position, precision, filament luminance, luminous flux and all those things), the bulb *IS* by definition an HIR bulb. The infrared reflective coating is not part of that specification.

    The ones that use the HIR coating require incredibly tight tolerances to manufacture-- the slightest misplacement of the filament can result in the infrared not bouncing back to the filament properly, even if the filament is otherwise precise enough to preserve the lamp's light distribution.

    I have a 9006 and modified to use 9012 Sylvania xtra Vision which were quite good but pricey.
    You can get the Vosla +30 bulbs here and save a little money vs. the packaged-by-Sylvania Vosla bulbs.
    Depending on what you drive and/or your lamps' condition and aim, the HIR2 may not be a the best option.

  3. #3

    Default Re: Are these Bosch 9012 HIR bulbs real HIR ??

    Bosch does not make bulbs. They sell bulbs, but who made them (and at what quality level) is anybody's guess. The Vosla HIR2+30 is available in a GM box at a good price, and that's a dependably good quality, good performing bulb.

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