Reference Part Number:
Pre-Cat (Upstream): 11787589121
Post-Cat (Downstream): 11787589122
⚠️ Not interchangeable, please select correct option

Compatible Engine:
N20B20 2.0L Turbo Petrol, All Pre-LCI & LCI variants
Not Fit: N13 / B Series / N55 Engines, All Diesel Engines, M Power Models

Compatible Chassis & Vehicles:
1 Series: F20 / F21 (2012–2015) 125i
2 Series: F22 / F23 (2014–2017) 220i, 228i
3 Series: F30 / F31 / F34 (2012–2018) 320i, 328i
4 Series: F32 / F33 / F36 (2013–2017) 420i, 428i
5 Series GT: F07 LCI (2013–2017) 528i
5 Series: F10 / F11 (2013–2016) 520i, 528i
X1: E84 (2012–2015) sDrive20i, xDrive28i
X3: F25 (2012–2017) xDrive20i, xDrive28i
X4: F26 (2014–2018) xDrive20i, xDrive28i
X5: F15 (2015–2018) xDrive28i
X6: F16 (2015–2018) xDrive28i
Z4: E89 (2012–2016) sDrive20i, sDrive28i
*All models above with N20 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

For other models or fitment check, please send us your VIN / chassis number, vehicle model and engine code, we will confirm fitment for you.