This is a genuine BMW keymultiple start interruption, part number 82 92 9 402 608. The number stamped on the part is 82929402608; BMW's catalog files it under the short number 9402608. You will find it on our Merchandise & Accessories shelf, under Other Universal Accessories parts.
It fits the E36 sedan, coupe and convertible (318i, 320i, 325i and M3, 1992–1999), with the M40, M42, M43, M44, M50 or S50 engines — and the European-market versions.
BMW draws it on 3 diagrams, among them Multiple Start Interruption (03_2901) and Multiple Start Interruption (03_2902). It weighs about 20 g (under 0.1 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.