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

Lambda Monitor sensor

BMW Part Number:11 78 1 433 940
11781433940short number 1433940
♡ Save for later
Out of Stock

One email the moment one is listed — nothing else.

Fits E46 — 320Ci, 320i, 323Ci, 323i, 325Ci, 325i, 325ti, 325xi +5 more
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Lambda Monitor sensor – BMW diagram02 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW lambda Monitor sensor, part number 11 78 1 433 940. The number stamped on the part is 11781433940; BMW's catalog files it under the short number 1433940. You will find it on our Engine shelf, under Exhaust gas control systems.

It fits every E46 body style (320i, 323i, 325i, 328i and 330i, 1999–2006), with the M52 or M54 engines — and the European-market versions.

BMW draws it on 11 diagrams, among them Lambda Probe Fixings (11_2181) and Lambda Probe Fixings (11_2982). BMW's catalog calls for two of these at each place it is fitted. It weighs about 106 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.

Details

BMW Part Number11 78 1 433 940
Also written as117814339401433940
QualityGenuine BMW · OEM
OE / Cross-Reference
0258005109

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.