O-ring pressure sensor — a genuine BMW part, number 12 63 7 835 186. The number stamped on the part is 12637835186; BMW's catalog files it under the short number 7835186. You will find it on our Electrical shelf, under Other Engine Electrical System parts.
It fits the E46 coupe (M3, 2003), with the S54 engine.
BMW draws it on the Idle regul.valve/additional air line (13_1028) diagram. It weighs about 1 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.
Every used part is inspected and graded before listing. Condition grades:
Good — minimal wear, fully functional.
Fair — normal wear, fully functional.
Acceptable — visible wear, still functional.
Returns: 30 days if a part arrives damaged or isn't what the listing described. Full policy.
Shipping: Ships within the US. Orders ship within 1–2 business days; small parcels ship free on orders of $75.00 or more. Oversize items ship at a flat $49.99 each — free shipping does not cover them.
