Lumbar support retrofit

Good stuff!

Seat back construction looks the same as the E46 (it's totally different on the E85/6 sport seats, so this doesn't apply to those).

You can probably use the E46's lumbar support (and the loom/switch), which is also found in Range Rovers of the era (L322?), and possibly other BMWs if you wanted to stay OEM.

The BMW bladders are laid out differently though - I suspect you get a lot more lower back support with the BMW/Range Rover set up as they are doubled up, rather than only covering half the pad each.



(I used RR links, as they're probably cheaper than the BMW versions, due to it being rarer on the E46 than the L322)
 
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