Genuine BMW part 51 71 8 243 226: Supporting rail. The number stamped on the part is 51718243226; BMW's catalog files it under the short number 8243226. You will find it on our Interior Body shelf, under Other Body equipment parts. It supersedes the older number 8243225, so a part carrying that number is the same part. BMW has since replaced it with 7056337.
It fits the E46 convertible (323i, 325i, 330i and M3, 2000–2006), with the M52, M54 or S54 engines — and the European-market versions.
BMW draws it on the Battery holder and mounting parts (61_1424) diagram. It weighs about 35 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.