Hexagon nut with collar — a genuine BMW part, number 23 21 7 531 367. The number stamped on the part is 23217531367; BMW's catalog files it under the short number 7531367. You will find it on our Transmission shelf, under Transmission shafts. It supersedes the older number 7511858, so a part carrying that number is the same part.
It fits every E46 body style (325i and 330i, 2001–2006), with the M54 engine — and the European-market versions.
BMW draws it on 2 diagrams, among them S5D...Z drive shaft/output shaft 4-wheel (23_0892) and GS6-37BZ/DZ Seal and mounting parts (23_1053). It weighs about 80 g (0.2 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.