Post catalyst / After catalyst O2 sensor.Made by Bosch.Select part location from menu.
Part# 11 78 7 514 926 = After catalyst in front exhaust manifold.
Part# 11 78 7 514 927 = After catalyst in rear exhaust manifold.
Note: Only for E46 models built from 03/2003-2006
325i \u0026 325ci 03\/2003-2006 \/ After Cat Front Manifold,325i \u0026 325ci 03\/2003-2006 \/ After Cat Rear Manifold,330i \u0026 330ci 03\/2003-2006 \/ After Cat Front Manifold,330i \u0026 330ci 03\/2003-2006 \/ After Cat Rear Manifold
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