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3 Series Parts

Regulating lambda probe

BMW Part Number:11 78 7 523 434
11787523434short number 7523434
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One email the moment one is listed — nothing else.

Fits E46 — 325Ci, 325i, 330Ci, 330i
Select your vehicle to check fitment

Genuine BMW Part

Photos coming soon — see the BMW diagram below

Regulating lambda probe – BMW diagram01 View BMW DiagramSee this part on the official exploded view

This is a genuine BMW regulating lambda probe, part number 11 78 7 523 434. The number stamped on the part is 11787523434; BMW's catalog files it under the short number 7523434. You will find it on our Engine shelf, under Exhaust gas control systems.

It fits the E46 sedan, coupe, convertible and touring (325i and 330i, 2001–2006), with the M54 engine.

BMW draws it on 3 diagrams, among them Lambda Probe Fixings (11_3555) and Lambda Probe Fixings (18_0518). It weighs about 150 g (0.3 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 7 523 434
Also written as117875234347523434
QualityGenuine BMW · OEM

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.