These replacement oxygen sensors are just what you need to get your vehicle in good working form again!

Specifications:

  • Comes as a PAIR
  • Brand New Oxygen Sensors
  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (13.8 Inches)
  • Upstream Sensors
  • 4 wire configuration
  • Replaces dealer part numbers: 11 78 1 247 406, 11 78 1 247 407, 11 78 1 433 075, 11 78 1 742 049, 11 78 1 742 050, 11 78 7 513 962, MHK 000210, 11781247406, 11781247407, 11781433075, 11781742049, 11781742050, 11787513962, MHK000210
  • Built and tested to strict quality control standards

Note: For clarification purposes:

  • Upstream location is between the catalytic converter and the engine
  • Downstream location is between the catalytic converter and the tailpipe

If you have bad O2 sensors causing your vehicle to run poorly or fail an emission test then these are the parts for you.

Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Identifying your Oxygen Sensors (0:57)
    • Upstream oxygen sensors are located in between the engine and the catalytic converter
    • Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter
    • Locate your vehicle's firing order diagram
    • The bank that contains cylinder one is bank one
    • The bank that does not contain cylinder one is bank two, even if it does not contain cylinder two

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

4.0 / 5.0
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Parts are good, delivery was good on your side of the boarder. When it cross over to Canada hard to track. Stupid Canada Post.?? I will be ordering more parts from 1A auto. Cheersss Ian
March 8, 2018
Purchased
2 months ago
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Will work for a 2003 330i after 03/03 production? If not what will?
2003 BMW 330i L6 3.0L (Built Before 3/03 Production Date) Upstream O2 Oxygen Sensor Pair
Lindsey C on Apr 19, 2018
BEST ANSWER: We do not currently carry this part for your vehicle. You can try searching a website called Partfinder.com, which you can find here: http://www.partfinder.com. If you have any questions about other parts we carry, please feel free to give us a call or send us an email.

Vehicle Fit

  • 1995-1998 BMW 318i L4 1.9L Upstream O2 Oxygen Sensor Pair
  • 1996-1997 BMW 318iC L4 1.9L Upstream O2 Oxygen Sensor Pair
  • 1996-1997 BMW 318iS L4 1.9L Upstream O2 Oxygen Sensor Pair
  • 1996-1999 BMW 318ti L4 1.9L Upstream O2 Oxygen Sensor Pair
  • 2000 BMW 323Ci L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2000 BMW 323i L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2001-2002 BMW 325Ci L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2003 BMW 325Ci L6 2.5L (Engine ID M54) (Built Before 3/03 Production Date) Upstream O2 Oxygen Sensor Pair
  • 2001-2005 BMW 325Xi L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2001-2002 BMW 325i L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2003 BMW 325i L6 2.5L (Engine ID M54) (Built Before 3/03 Production Date) Upstream O2 Oxygen Sensor Pair
  • 2000 BMW 328Ci L6 2.8L Upstream O2 Oxygen Sensor Pair
  • 1999-2000 BMW 328i L6 2.8L Upstream O2 Oxygen Sensor Pair
  • 2001-2002 BMW 330Ci L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 2003 BMW 330Ci L6 3.0L (Built Before 3/03 Production Date) Upstream O2 Oxygen Sensor Pair
  • 2001-2005 BMW 330Xi L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 2001-2002 BMW 330i L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 2003 BMW 330i L6 3.0L (Built Before 3/03 Production Date) Upstream O2 Oxygen Sensor Pair
  • 2001-2003 BMW 525i L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 1999-2000 BMW 528i L6 2.8L Upstream O2 Oxygen Sensor Pair
  • 1999-2000 BMW 528iT L6 2.8L Upstream O2 Oxygen Sensor Pair
  • 2001-2003 BMW 530i L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 1997-2003 BMW 540i V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 1999-2000 BMW 540iT V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 1997-2001 BMW 740i V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 1996-2001 BMW 740iL V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 1995-2001 BMW 750iL V12 5.4L Upstream O2 Oxygen Sensor Pair
  • 1996-1997 BMW 840Ci V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 1995-1997 BMW 850Ci V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 2000-2003 BMW M5 V8 5.0L Upstream O2 Oxygen Sensor Pair
  • 2004-2006 BMW X3 L6 3.0L Manual Transmission Upstream O2 Oxygen Sensor Pair
  • 2004-2005 BMW X3 L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2000-2003 BMW X5 V8 4.4L Upstream O2 Oxygen Sensor Pair
  • 2001-2006 BMW X5 L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 2002-2003 BMW X5 V8 4.6L Upstream O2 Oxygen Sensor Pair
  • 1999-2000 BMW Z3 L6 2.8L Upstream O2 Oxygen Sensor Pair
  • 1999-2002 BMW Z3 L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2001-2002 BMW Z3 L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 2003-2005 BMW Z4 L6 2.5L Upstream O2 Oxygen Sensor Pair
  • 2003-2005 BMW Z4 L6 3.0L Upstream O2 Oxygen Sensor Pair
  • 2000-2003 BMW Z8 V8 5.0L Upstream O2 Oxygen Sensor Pair
  • 2003 BMW Z8 V8 4.8L Upstream O2 Oxygen Sensor Pair
  • 2003-2005 Land Rover Range Rover V8 4.4L Upstream O2 Oxygen Sensor Pair
Part #: 1AEEK00312

Ships Same Day for orders placed by 4 P.M. ET

How-to Video:

(03:08 min)