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FREE SHIPPING on US orders over $75 (oversize excepted) • Quality used E36 & E46 parts • Every part inspected & graded
3 Series Parts

Lock button

BMW Part Number:51 21 8 399 243
51218399243short number 8399243
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One email the moment one is listed — nothing else.

Fits E36 — 316g, 316i, 316i 1.6, 316i 1.9, 318i, 318is, 318tds, 318ti +8 more
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Lock button – BMW diagram04 View BMW DiagramSee this part on the official exploded view

Lock button — a genuine BMW part, number 51 21 8 399 243. The number stamped on the part is 51218399243; BMW's catalog files it under the short number 8399243. You will find it on our Interior Body shelf, under Other Body equipment parts. It supersedes the older number 0149217, so a part carrying that number is the same part.

It fits the E36 coupe, convertible and compact (318i, 318ti, 323i, 325i, 328i and M3, 1992–1999), with the M42, M43, M44, M50, M52 or S50 and other engines — and the European-market versions.

BMW draws it on 4 diagrams, among them Door lock front (41_0939) and Front Door Control/Door Lock (41_1062). BMW's catalog calls for two of these at each place it is fitted.

We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.

Details

BMW Part Number51 21 8 399 243
Also written as512183992438399243
QualityGenuine BMW · OEM
OE / Cross-Reference
11439730000
CompactM43ManualCH11

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.