Reference Part Number:
- Pre-Cat Bank 1 (Position 1): 11787558073
- Pre-Cat Bank 2 (Position 2): 11787558055
- Post-Cat Bank 1 (Position 4): 11787545074
- Post-Cat Bank 2 (Position 5): 11787545075
* Position numbers match the official exhaust exploded diagram.
⚠️ Please confirm position & provide VIN before ordering.
⚠️ Sensors are not interchangeable between positions.

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

Compatible Chassis & Vehicles:
1 Series: E81 / E82 / E87 / E88 | 125i 128i 130i | N52 Engine
3 Series: E90 Sedan / E91 Touring / E92 Coupe / E93 Convertible | 323i 325i 328i 330i | N52 Engine
5 Series: E60 Sedan / E61 Touring | 523i 525i 528i 530i | N52 Engine
6 Series: E63 Coupe / E64 Convertible | 630i | N52 Engine
7 Series: E65 / E66 | 730i 730Li | N52 Engine
X Series: E83 X3 / E84 X1 | xDrive25i xDrive28i 25i 28i | N52 Engine
Z Series: E85 / E86 / E89 Z4 | 23i 25i 28i 30i | N52 Engine
*All models above with N52 engine only.

Important Notice
1. Product images are for reference only
2. Minor cosmetic differences between production batches