Great performance and easy to installation.O2 Sensor can improve engine efficiency performance and fuel economy,reduce CO2 and other harmful emissions,extend expensive Catalytic Converter life Other Part Number: 234-4672, 2344672, SG1108, ES10899 13477 250-24611 11781742050 Replaces Part Number:1781433050, 11781433075,11781433940,11781742050,234-4672, 234-4683,2344672, 2344683, SG1108, ES10899, ES10857,15109, 13477, 250-24611,25024392,0258005109,025800347 Fit For:for 323CI 2000 E 46 M 52 L6-2.5L Upstream and Downstream for 323I 1999-2000 E 46 M 52 L6-2.5L Upstream and Downstream for 325CI 2001-2003 / 03 E 46 M 54 L6-2.5L Upstream and Downstream for 325I 2001-2003 / 03 E 46 M 54 L6-2.5L Upstream and Downstream for 325XI 2001-2005 E 46 M 54 L6-2.5L Upstream and Downstream for 328CI 2000 E 46 M 52 L6-2.8L Upstream and Downstream for 328I 1999-2000 E 46 M 52 L6-2.8L Upstream and Downstream for 330CI 2001-2003 / 03 E 46 M 54 L6-3.0L Upstream and Downstream for 330I 2001-2003 / 03 E 46 M 54 L6-3.0L Upstream and Downstream for 330XI 2001-2005 E 46 M 54 L6-3.0L Upstream and Downstream for 525I 2001-2003 / 03 E 39 M 54 L6-2.5L Upstream and Downstream for 528I 1999-2000 E 39 M 52 L6-2.8L Upstream and Downstream for 530I 2001-2003 / 03 E 39 M 54 L6-3.0L Upstream and Downstream for X3 (M / T) 2004-2005 E 83 M 54 L6-2.5L Upstream and Downstream for X3 (M / T) 2004-2006 E 83 M 54 L6-3.0L Upstream and Downstream for X5 2001-2006 E 53 M 54 L6-3.0L Upstream and Downstream for Z3 1999-2000 E 36 M 52 L6-2.8L Upstream and Downstream for Z3 2001-2002 E 36 M 54 L6-3.0L Upstream and Downstream for Z4 2003-2005 E 85 M 54 L6-2.5L Upstream and Downstream for Z4 2003-2005 E 85 M 54 L6-3.0L Upstream and Downstream For Range Rover4.4L 2003-2005 colour:black Material:metal Package Contents: 4 * Oxygen Sensor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.