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      12-19-2012, 02:28 PM   #5
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Drives: 2018 X3 M40i
Join Date: Jul 2010
Location: Dallas, TX

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Originally Posted by Adceleratus View Post
What causes it to be so expensive? You can find the housings on eBay for $400-$700 each, and from my understanding you could purchase an HID kit to compensate for what is missing, which can be acquired for $200ish? I am sure some other ecu changes would need to be made but is there anything else I'm missing? I'm sure there is, I am thinking of doing it myself, so it would be good to know
You either gotta do it all OEM, or wait for some company to do a self-contained aftermarket version. You can't just piece together the housing plus some bulbs.

You need an OEM assembly for each side ($900 each), the control modules plus the LED/Xenon bulbs, that's another $1K for each side. So now you're almost at $4K before any labor cost or coding. And no one knows how to code it yet, so you'd be pretty much stuck.

Here's the parts you need. Have at it And we're expecting a thorough DIY write up if you succeed.
2018 X3 M40i - current
2016 M3 - sold
2013 ActiveHybrid 3 - sold
2012 M3 coupe - sold