2003-2006 BMW O2 / Oxygen Sensor 11787523435
OEM Part #: 11-78-7-523-435 (11787523435)
Actual photo
The exact part you’ll receive — not a stock photo.
$28.99
Used
Donor2006 BMW X3 · 3.0L
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Genuine OEM Used
SKU: 646689
Donor Vehicle: 2006 BMW X3 · 3.0L
2 photos
$28.99
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Genuine OEM Used
SKU: 655912
Donor Vehicle: 2004 BMW X3 · 3.0L
2 photos
$34.49
30-Day Returns
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Used BMW O2 / Oxygen Sensor, OEM part number 7523435, is a genuine BMW oxygen sensor removed from a donor vehicle. This sensor measures exhaust oxygen content to help the engine control module adjust the air-fuel ratio. A failing O2 sensor often triggers a check engine light and can reduce fuel economy or cause rough idling. Fits naturally aspirated 2.5L and 3.0L inline-six engines (M54 and N52 families).
Specifications
| Fits Vehicle Model | 325Ci, 325i, 330Ci, 330i, 525i, 530i, X3 |
| Fits Vehicle Make | BMW |
| OEM Part No | 11-78-7-523-435 (11787523435) |
| Category | Exhaust |
Compatible Vehicles
Fits 33 vehicle configurations across 1 make, 2003-2006.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 33 vehicle configurations — 26 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | BMW | 330Ci | Convertible | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | 330Ci | Coupe | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2006 | BMW | 330Ci | Coupe | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 330Ci | Coupe | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2003 | BMW | 330Ci | Coupe | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2003 | BMW | 330i | Sedan | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 330i | Sedan | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | 330i | Sedan | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 525i | Sedan | 2.5L l6 | |
| 2004 | BMW | 525i | Sedan | 2.5L l6 | |
| 2004 | BMW | 530i | Sedan | 3.0L l6 | |
| 2005 | BMW | 530i | Sedan | 3.0L l6 | |
| 2005 | BMW | X3 | SUV | 3.0L l6 | |
| 2004 | BMW | 330Ci | Convertible | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2006 | BMW | 330Ci | Convertible | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2006 | BMW | X3 | SUV | 3.0L l6 | |
| 2003 | BMW | 330Ci | Convertible | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2003 | BMW | 325Ci | Convertible | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 325Ci | Convertible | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | 325Ci | Convertible | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2006 | BMW | 325Ci | Convertible | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 325Ci | Coupe | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | 325Ci | Coupe | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2006 | BMW | 325Ci | Coupe | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | X3 | SUV | 3.0L l6 | |
| 2003 | BMW | 325Ci | Coupe | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 325i | Sedan | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2003 | BMW | 325i | Sedan | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2006 | BMW | 325i | Sedan | 3.0L l6 | For Vehicles with Production Date After 03/2003 |
| 2003 | BMW | 325i | Wagon | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2005 | BMW | 325i | Wagon | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | 325i | Wagon | 2.5L l6 | For Vehicles with Production Date After 03/2003 |
| 2004 | BMW | 325i | Sedan | 2.5L l6 | For Vehicles with Production Date After 03/2003 |