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1178 7589 122 Rear Oxygen Sensor for BMW 2 3 4 5 Series X1 X3 X4 Z4
| MOQ: | 50 |
| Price: | $9-13 |
BMW rear oxygen sensor
,O2 sensor for BMW 2 3 4 5 Series
,BMW X1 X3 X4 Z4 oxygen sensor
◆ This rear oxygen sensor is a direct replacement for the original BMW unit, designed to measure oxygen concentration in the exhaust after the catalytic converter and provide feedback to the engine control unit.
◆ The OEM reference number is 1178 7589 122 (11787589122). It is a heated oxygen sensor with a 540 mm wire length and an OE-style connector.
◆ The sensor is engineered to OEM standard dimensions for direct fitment into the downstream exhaust location without modification.
◆ It is designed for a wide range of BMW models equipped with N20 and related turbocharged engines, including the 2 Series (F22/F23), 3 Series (F30/F31/F34/F35), 4 Series (F32/F33/F36), 5 Series (F10/F11/F07), X1 (E84), X3 (F25), X4 (F26), X5 (F15), and Z4 (E89), covering model years from approximately 2010 through 2021.
◆ This product is an oxygen sensor manufactured to meet original quality standards for signal accuracy, fit, and durability.
◆ Part Number: 1178 7589 122 / 11787589122
◆ Component Type: Oxygen Sensor / Rear (Downstream) O2 Sensor
◆ Vehicle Make: BMW
◆ Wire Length: Approx. 540 mm
◆ Position: Rear / Downstream (after catalytic converter)
◆ Function: Monitors catalytic converter efficiency and exhaust oxygen content
◆ Note: Verify connector shape and specific engine variant against your vehicle’s original sensor before ordering
◆ OEM Standard Fit: Manufactured to exact original specifications for a direct, hassle-free replacement.
◆ Downstream Monitoring: Measures oxygen content after the catalytic converter to determine converter efficiency and support emissions compliance.
◆ Heated Design: Integrated heater brings the sensor to operating temperature quickly for efficient closed-loop operation.
◆ Durable Construction: Built with materials resistant to exhaust heat, contamination, and vibration.
◆ BMW 2 Series (F22/F23): 2014–2016
◆ BMW 3 Series (F30/F31/F34/F35): 2012–2018
◆ BMW 4 Series (F32/F33/F36): 2014–2016
◆ BMW 5 Series (F10/F11/F07): 2012–2016
◆ BMW X1 (E84): 2012–2015
◆ BMW X3 (F25): 2013–2017
◆ BMW X4 (F26): 2015–2018
◆ BMW X5 (F15): 2016–2018
◆ BMW Z4 (E89): 2012–2016
◆ Note: Fitment varies by engine variant and market. Verify against your vehicle's original part number and production year before ordering.
Q1: Is this a genuine BMW part?
A: The 11787589122 reference is the original equipment part number. Both genuine BMW and aftermarket equivalents (such as Vemo and other OE-quality suppliers) are available that match the original fit and function.
Q2: How do I confirm if it fits my vehicle?
A: Check your vehicle’s existing oxygen sensor. If it is stamped with 11787589122 or 1178 7589 122, this replacement will fit. Also confirm your vehicle model and year against the compatibility list above, and verify the position is the rear/downstream sensor.
Q3: What are the symptoms of a failing rear oxygen sensor?
A: Common signs include a check engine light with oxygen sensor or catalytic converter efficiency fault codes, decreased fuel economy, and failed emissions testing. A diagnostic scan can confirm which sensor circuit is faulty before replacement. Note that downstream sensor codes can also be triggered by a failing catalytic converter itself.
