Originally Posted by ccooper

I know that was the stock stereo on my '81 240D and for years prior to 1981. However, I am unsure if they used that on the higher end cars. It's a question of when the Becker BE612 was first used. My '86 SDL came with the Becker 612 when I bought it used, but it really should have had the BE 754 in it (someone got it off of an earlier vehicle). Bottom line: that is a stock stereo from 1981; whether it's from a 300 SD is another story.