Specifications:

  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (29.6 inches)
  • Downstream Sensor
    • as listed per application
  • 4 wire configuration
  • 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 a bad O2 sensor causing your vehicle to run poorly or fail an emission test then this is the part 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

Note:  You may be required to reset the vehicle’s computer after installation of this part.

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

There are no reviews for this item. Write Review
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

How-to Video:

(03:08 min)

Tools List:

    1A - No Tools Needed

  • No Tools Needed



This part replaces:

  • OE # 11781739847

Vehicle Fit

  • 1996-1998 BMW 318i Downstream O2 Oxygen Sensor
  • 1996-1997 BMW 318iC Downstream O2 Oxygen Sensor
  • 1996-1997 BMW 318iS Downstream O2 Oxygen Sensor
  • 1996-1999 BMW 318ti Downstream O2 Oxygen Sensor
  • 2001-2002 BMW 325Ci Downstream O2 Oxygen Sensor
  • 2003 BMW 325Ci (Built Before 3/03 Production Date) Downstream O2 Oxygen Sensor
  • 2001-2005 BMW 325Xi Downstream O2 Oxygen Sensor
  • 2001-2002 BMW 325i Downstream O2 Oxygen Sensor
  • 2003 BMW 325i (Built Before 3/03 Production Date) Downstream O2 Oxygen Sensor
  • 1999-2000 BMW 328i Downstream O2 Oxygen Sensor
  • 1999 BMW 328iC Downstream O2 Oxygen Sensor
  • 2001-2002 BMW 330Ci Downstream O2 Oxygen Sensor
  • 2001-2005 BMW 330Xi Downstream O2 Oxygen Sensor
  • 2001-2002 BMW 330i Downstream O2 Oxygen Sensor
  • 2003 BMW 330i (Built Before 3/03 Production Date) Downstream O2 Oxygen Sensor
  • 2001-2003 BMW 525i Downstream O2 Oxygen Sensor
  • 1999-2000 BMW 528i Downstream O2 Oxygen Sensor
  • 1999-2000 BMW 528iT Downstream O2 Oxygen Sensor
  • 2001-2003 BMW 530i Downstream O2 Oxygen Sensor
  • 1995-2001 BMW 750iL Downstream O2 Oxygen Sensor
  • 2004-2005 BMW X3 Downstream O2 Oxygen Sensor L6 2.5L
  • 2004-2006 BMW X3 Downstream O2 Oxygen Sensor L6 3.0L Manual Transmission
  • 2000-2003 BMW X5 Downstream O2 Oxygen Sensor V8 4.4L
  • 2001-2006 BMW X5 Downstream O2 Oxygen Sensor L6 3.0L
  • 2002-2003 BMW X5 Downstream O2 Oxygen Sensor V8 4.6L
  • 1999-2002 BMW Z3 Downstream O2 Oxygen Sensor L6 2.5L
  • 1999-2000 BMW Z3 Downstream O2 Oxygen Sensor L6 2.8L
  • 2003-2005 BMW Z4 Downstream O2 Oxygen Sensor L6 3.0L
  • 2003-2005 Land Rover Range Rover Downstream O2 Oxygen Sensor
Part #: 1AEOS00169

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

We're here to help

1A Auto Parts

Customer Feedback

"Thanks for the fast reliable service. Great price, and the headlights were as good as oem or better!!! Keep up the good work..."
- Dwuan M.
Read More