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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Apr-22-2016, 06:04:20 PM   #11
scansp7
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Default Re: Power to Manual Seat Conversion

Any success with this? I also feel that I am sitting higher in the power seats than the manual...
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Old Sun, Apr-24-2016, 10:44:41 PM   #12
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Default Re: Power to Manual Seat Conversion

I'm interested to hear status too


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Old Wed, Apr-27-2016, 08:05:02 PM   #13
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Default Re: Power to Manual Seat Conversion

Doing a cross-reference on realoem, the seat frames (cushion and back) are common for all seat variants. In other words, an M3 manual seat frame is the same as a base E46 manual seat frame. I see the easiest way to make the swap is to buy any manual seat and swap your foam and upholstery over.

Alternatively, the opposite swap has been done by swapping the cushion frame and misc parts (back frame is the same for manual and power). I'm guessing it would be more difficult and just as expensive to find only a cushion frame, rather than a complete seat... and a complete seat is an easier swap.

A junkyard seat should run you under $100, or here's a pair of manual frames for $370:
http://www.ebay.com/itm/2x-BMW-E46-L...tVPUMo&vxp=mtr
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Old Mon, Apr-03-2017, 12:18:44 PM   #14
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Default Re: Power to Manual Seat Conversion

hmm, interesting! I will look into this to try and gain some headroom
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Old Mon, Apr-03-2017, 12:57:38 PM   #15
Obioban
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Default Re: Power to Manual Seat Conversion

I believe the sliders could be swapped reasonably easily.

That said, I don't think that'll lower your seat at all (as in, not a single mm)-- the sliders mount to both the floor and the seats at the exact same location. I suspect the ~.75" of additional height (of the power seat vs the manual seat) is the rest of the power mechanisms under the seat.

If you don't go full manual, I doubt you'll get lower at all. In fact. I suspect you could get a fully manual seat, swap the power slider on, and not be any higher, either.

In short, I don't think a slider swap is going to help you at all. I'm also not sure how you'd actuate the slider on a power seat, since the slider release handle is built into the side of the manual seats...
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Discussing Power to Manual Seat Conversion in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)