Retrofit kit, lumbar support, both sides — a genuine BMW part, number 52 10 9 404 379. The number stamped on the part is 52109404379; BMW's catalog files it under the short number 9404379. You will find it on our Interior Body shelf, under Tail trim.
It fits every E36 body style (318i, 318ti, 320i, 323i, 325i, 328i and M3, 1992–1999), with the M40, M42, M43, M44, M50 or M52 and other engines — and the European-market versions.
BMW draws it on the Supplementary Set Support Lordosis (03_2676) diagram. It weighs about 1.1 kg (2.4 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
