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.
525i 2004-2005 \/ After Cat Front Manifold,525i 2004-2005 \/ After Cat Rear Manifold,530i 2004-2005 \/ After Cat Front Manifold,530i 2004-2005 \/ After Cat Rear Manifold
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