Info from the internet:
The Bosch 13231 oxygen sensor is a direct-fit, 4-wire heated sensor designed for 1987-1995 BMW models, primarily within the E30, E36, E34, E32, and E31 chassis. It fits upstream positions (pre-cat) on popular models like the 318i, 325i, 530i, 540i, 740i, 750iL, 850i, and 1995 M3.
Cash and local pickup only please.
If you see this listing, the item is still for sale.