Reference Part Number:
- Pre-Cat Bank 1 (Position 1): 11787577138 / 11787589138
- Pre-Cat Bank 2 (Position 2): 11787577139 / 11787589139
- Post-Cat Bank 1 (Position 4): 11787577146 / 11787589146
- Post-Cat Bank 2 (Position 5): 11787577147 / 11787589147
* Position numbers match the official exhaust exploded diagram.
* Numbers starting with 7589 are official BMW superseding part numbers, fully interchangeable with original 7577 series.
⚠️ Please confirm position & provide VIN before ordering.
⚠️ Sensors are not interchangeable between positions.

Compatible Engine:
N52N naturally aspirated 2.5L & 3.0L Petrol (F chassis only)
Not Fit: E chassis N52, N54 / N55 / B Series / N46 Engines, All Diesel Engines, M Power Models

Compatible Chassis & Vehicles:
5 Series: F10 Sedan / F11 Touring | 523i 528i 530i | N52N Engine
X Series: F25 X3 | xDrive25i xDrive28i | N52N Engine
*All models above with N52N engine only.

Important Notice
1. Product images are for reference only
2. Minor cosmetic differences between production batches are normal
3. Actual product received may vary slightly in appearance
4. Fitment and function will not be affected by minor appearance differences