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Amazon.com: Bank 2 Post-Cat Oxygen Sensor Replacement for BMW E82 128i 135i E9X 325i 328i 335i X3 X5 Z4 3.0L 11787545075 : Automotive
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Amazon.com: Bank 1 Post-Cat Oxygen Sensor Replacement for BMW E90 E91 E92 E93 325i 328i 335i E88 135i X5 xDrive30i X3 Z4 N52 3.0L 11787545074 : Automotive
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11787545074 - OEM Bosch Rear Bank 1 Post-Cat Oxygen Sensor - 560mm - E70 E83 E82/88 E9X (N5X 3.0L) | Turner Motorsport
![DIY: Replacing Pre-Cat Oxygen Sensors on an N54 - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) DIY: Replacing Pre-Cat Oxygen Sensors on an N54 - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)](http://i.imgur.com/90Ybev8.jpg?1)