• Up & Downstream Oxygen O2 Sensors For BMW 128I 325XI 528I X3 X5 Z4 234-5138
  •  
  • Fit for: 
  • BMW 1 SERIES M L6-3.0 2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 128I L6-3.0 2013-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 135I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 323I L6-2.5 2011-2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 325I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 325XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 328I L6-3.0 2013-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • BMW 328I XDRIVE L6-3.0 2013-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream
  • 4-40PC Oxygen O2 Sensor For BMW 128I 135I 328I 330I 325XI 335I 528I X3 X5 Z4 EAH

    Up & Downstream Oxygen O2 Sensors For BMW 128I 325XI 528I X3 X5 Z4 234-5138

     

    Fit for: 

    BMW 1 SERIES M L6-3.0 2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 128I L6-3.0 2013-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 135I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 323I L6-2.5 2011-2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 325I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 325XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 328I L6-3.0 2013-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 328I XDRIVE L6-3.0 2013-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 328XI L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 330I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 330XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335I L6-3.0 2010-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335IS L6-3.0 2013-2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335I XDRIVE L6-3.0 2010-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335XI L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 528I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 528I XDRIVE L6-3.0 2010-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 528XI L6-3.0 2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X3 L6-3.0 2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X3 L6-3.0 2009-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X5 L6-3.0 2010-2009 GAS ; Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X5 L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW Z4 L6-3.0 2015-2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

     

    Specifications: 

    OE Numbers: 

    234-5138, 234-5139, 234-4876, 234-4892

    Product Material: Stainless Steel

    Color: Black, Silver

    Installation Position: Upstream, Downstream

    Functions: 

    1. The Upstream oxygen sensor is used to Monitor Raw Exhaust Gas to Adjust Air-fuel Ratio in Real-time, i.e., it is used to Detect Whether the Exhaust Gas Exceeds the Standard.

    2. The Downstream oxygen sensor is mainly used to Detect Whether the Three-way Catalytic Converter Works Normally.

    Packaging Weight: 543 g

    Packaging Sizes (cm): 19.5 x 10.5 x 6.5

     

    Features: 

    *Corrosion-Resistant Build

    Stainless steel construction withstands exhaust heat and chemicals for long-term reliability.

    *Efficient Contaminant Blocking

    PTFE filter stops efficiency-robbing contaminants ( like soot, silicone, and grime ) from damaging the sensing element, which keeps the accuracy of the sensor and extends its lifespan.

    *Faster Response Time

    Precision zirconia element detects air-fuel changes instantly for smoother idle, sharper acceleration, and precise fuel control.

    *Optimized Engine Performance

    Maximizes fuel efficiency, reduces harmful emissions, and ensures smog test compliance.

    *Perfect Fit

    Built to strict quality control standards and with 100% factory-tested to ensure stable performance. Direct replacement, just install and drive.

     

    Packaging Include: 

    Oxygen Sensors * (Upstream + Downstream) AS YOUR SELECT


     


    Item Specifics
    Brand AUXITO
    Type Oxygen Sensors
    Sensor Type Oxygen Sensor
    Number of Sensors AS YOUR SELECT
    Placement on Vehicle Upstream (Left + Right) + Downstream (Left + Right) Upper Lower Left Right
    Features Direct Fit Easy Installation Wired
    Manufacturer Part Number 234-5138 234-5139 234-4876 234-4892
    OE/OEM Part Number 11787540166 11787540167 11787557223 11787558073 11787558081 11787558087 11787589138 0035427218 11787557756 11787558055 11787526262 11787545074 11787545244 11787569968 11787614322
    Thread Diameter 0.711 & 0.711 & 0.708 & 0.708 in
    Manufacturer Warranty 2 Years
    Interchange Part Number Upstream Downstream Oxygen Sensor O2 Sensor BMW 3.0L 234 5138 234 5139 234 4892 234 4876
    Superseded Part Number 234-5138, 234-5139, 234-4876, 234-4892
    Position Upstream (Left + Right) & Downstream (Left + Right)
    Bundle Description 02 Oxygen O2 Sensors
    Custom Bundle Yes
    Interchange Part Number 3 11787557756, 11787558055, 11787526262, 11787545074
    Interchange Part Number 5 Upstream, Downstream, Oxygen Sensor, O2 Sensor, BMW, 3.0L
    Country/Region of Manufacture China
    Material Stainless Steel
    Connector Color As Picture Show
    Material Stainless Steel
    Universal Fitment No
    Items Included Oxygen Sensors
    Color Black, Silver
    Installation Position Upstream, Downstream
    Fit for 1 BMW 1 SERIES M L6-3.0 2011 Cylinder 1-6
    Fit for 2 BMW 128I L6-3.0 2013-2008 Cylinder 1-6
    Fit for 3 BMW 135I L6-3.0 2010-2008 Cylinder 1-6
    Fit for 4 BMW 323I L6-2.5 2011-2010 Cylinder 1-6
    Fit for 5 BMW 325I L6-3.0 2006 Cylinder 1-6
    Fit for 6 BMW 325XI L6-3.0 2006 Cylinder 1-6
    Fit for 7 BMW 328I L6-3.0 2013-2007 Cylinder 1-6
    Fit for 8 BMW 328I XDRIVE L6-3.0 2013-2009 Cylinder 1-6
    Fit for 9 BMW 328XI L6-3.0 2008-2007 Cylinder 1-6
    Fit for 10 BMW 330I L6-3.0 2006 Cylinder 1-6
    Fit for 11 BMW 330XI L6-3.0 2006 Cylinder 1-6
    Fit for 12 BMW 335I L6-3.0 2010-2007 Cylinder 1-6
    Fit for 13 BMW 335IS L6-3.0 2013-2011 Cylinder 1-6
    Fit for 14 BMW 335I XDRIVE L6-3.0 2010-2009 Cylinder 1-6
    Fit for 15 BMW 335XI L6-3.0 2008-2007 Cylinder 1-6
    Fit for 16 BMW 528I L6-3.0 2010-2008 Cylinder 1-6
    Fit for 17 BMW 528I XDRIVE L6-3.0 2010-2009 Cylinder 1-6

    Payment

    (1). We gladly accepts payment via PayPal, We will ship your item(s) within 24 hours.

    (2). We ship this item to US only via USPS first class mail. It usually takes 3-6 working days to deliver.

    (3). Before payment,Please keep the consistency of Paypal address and ebay address.

    (4). Quantity orders are welcome!

    Shipping

    (1) All items will be shipped in 24 hours after receiving your payment .

    (2) We ship this item to US only via USPS first class mail. It usually takes 3-6 working days to deliver.

    Returns

    (1). We offer 30 days return policy. Please contact us within 30 days t from the date you receive your order if you have any issues with the product or want return .Refund will be send after we got your resend package.

    (2). All returned items should be in the original packaging , return tracking information should be provided ..

    (3). Buyer is responsible for return shipping cost due to the problem not caused by item quality itself .

    Contact Us

    (1).Negative feedback will not help resolve any problems you have, please contact us via eBay messages before leaving negative feedback, our customer service will make best effort to help you with the issues.

    (2).We maintain high standards of excellenceand  strive for 100% customer satisfaction! Feedback is very important to us. We request that you contact us immediately Before you give us neutral  or negative  feedback, so that we can satisfactorily address your concerns.

    FAQ

    Q1: Will this bulb fit my vehicle?
    A: We can match almost any vehicle to one of our bulb sizes. eBay only lets us include partial vehicle fitments per listing, but if your vehicle does not show up on the compatibility table at the top of our listings, welcome you to contact us for free consulation before purchasing a product.
     
    Q2: My item has not arrived, what's taking so long?
    A: Sometimes items take longer than expected, especially if it’s going far or to rural area. Check with your post office to see if your item has been held up. Sometimes USPS will not update a tracking number until it has arrived at its destination. If your item still has not arrived after a few days, let us know so we can double check for you and help solve it asap.
     
    Q3: Do I need to mention the Year, Make and Model in the notes when place order?
    A: YES. Please include the Year, Make, and Model in the notes section during checkout to ensure you receive everything needed for your kit!
     
    Q4: My bulbs won't fit, help!
    A: Special bulb holder may be required. See if you can take the holder from the stock bulb. If not, let us know.
    The bulb size may be wrong, double check the item you received with the item you ordered.
    Do you have an aftermarket lighting housing? These may not be perfectly fitted for aftermarket bulbs and will require some manual modifications.
     
    Q5: Neither side lighting up? Both sides flicker, flash, or work inconsistantly.
    A:Check the headlight fuses, and then check the ballast plugs to insure correct installation. If this doesn't work, there may be a voltage problem with the vehicle. You probably just need a relay or capacitor.
     
    Q6: WARNING ABOUT POLARITY
    Unlike halogen bulbs, LED are polarity sensitive.
    BEFORE you start your LED kit installation, verify the polarity on your vehicle by simply plugging the LED bulb into your vehicle socket.
    - if your light turns on, please proceed to install both bulbs onto your vehicle.
    - if your light DOES NOT turn on, disconnect the bulb and flip the socket in order to reverse the polarity (this will not damage your vehicle electrical system in any way). Once you made sure the LED bulb turns on, please proceed to install both bulbs onto your vehicle.
    Note: There is no convention when it comes to polarity. Different car manufactures have different polarity setup, even within the car model the polarity setup on your low beams and high beams might be different.

    Picture
    4-40PC Oxygen O2 Sensor For BMW 128I 135I 328I 330I 325XI 335I 528I X3 X5 Z4 EAH

    Up & Downstream Oxygen O2 Sensors For BMW 128I 325XI 528I X3 X5 Z4 234-5138

     

    Fit for: 

    BMW 1 SERIES M L6-3.0 2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 128I L6-3.0 2013-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 135I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 323I L6-2.5 2011-2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 325I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 325XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 328I L6-3.0 2013-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 328I XDRIVE L6-3.0 2013-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 328XI L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 330I L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 330XI L6-3.0 2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335I L6-3.0 2010-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335IS L6-3.0 2013-2011 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335I XDRIVE L6-3.0 2010-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 335XI L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 528I L6-3.0 2010-2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 528I XDRIVE L6-3.0 2010-2009 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW 528XI L6-3.0 2008 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X3 L6-3.0 2010 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X3 L6-3.0 2009-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X5 L6-3.0 2010-2009 GAS ; Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW X5 L6-3.0 2008-2007 Cylinder 1-6 ; 2 Upstream & 2 Downstream

    BMW Z4 L6-3.0 2015-2006 Cylinder 1-6 ; 2 Upstream & 2 Downstream

     

    Specifications: 

    OE Numbers: 

    234-5138, 234-5139, 234-4876, 234-4892

    Product Material: Stainless Steel

    Color: Black, Silver

    Installation Position: Upstream, Downstream

    Functions: 

    1. The Upstream oxygen sensor is used to Monitor Raw Exhaust Gas to Adjust Air-fuel Ratio in Real-time, i.e., it is used to Detect Whether the Exhaust Gas Exceeds the Standard.

    2. The Downstream oxygen sensor is mainly used to Detect Whether the Three-way Catalytic Converter Works Normally.

    Packaging Weight: 543 g

    Packaging Sizes (cm): 19.5 x 10.5 x 6.5

     

    Features: 

    *Corrosion-Resistant Build

    Stainless steel construction withstands exhaust heat and chemicals for long-term reliability.

    *Efficient Contaminant Blocking

    PTFE filter stops efficiency-robbing contaminants ( like soot, silicone, and grime ) from damaging the sensing element, which keeps the accuracy of the sensor and extends its lifespan.

    *Faster Response Time

    Precision zirconia element detects air-fuel changes instantly for smoother idle, sharper acceleration, and precise fuel control.

    *Optimized Engine Performance

    Maximizes fuel efficiency, reduces harmful emissions, and ensures smog test compliance.

    *Perfect Fit

    Built to strict quality control standards and with 100% factory-tested to ensure stable performance. Direct replacement, just install and drive.

     

    Packaging Include: 

    Oxygen Sensors * (Upstream + Downstream) AS YOUR SELECT


     

    Item Specifics
    Brand :AUXITO
    Type :Oxygen Sensors
    Sensor Type :Oxygen Sensor
    Number of Sensors :AS YOUR SELECT
    Placement on Vehicle :Upstream (Left + Right) + Downstream (Left + Right) Upper Lower Left Right
    Features :Direct Fit Easy Installation Wired
    Manufacturer Part Number :234-5138 234-5139 234-4876 234-4892
    OE/OEM Part Number :11787540166 11787540167 11787557223 11787558073 11787558081 11787558087 11787589138 0035427218 11787557756 11787558055 11787526262 11787545074 11787545244 11787569968 11787614322
    Thread Diameter :0.711 & 0.711 & 0.708 & 0.708 in
    Manufacturer Warranty :2 Years
    Interchange Part Number :Upstream Downstream Oxygen Sensor O2 Sensor BMW 3.0L 234 5138 234 5139 234 4892 234 4876
    Superseded Part Number :234-5138, 234-5139, 234-4876, 234-4892
    Position :Upstream (Left + Right) & Downstream (Left + Right)
    Bundle Description :02 Oxygen O2 Sensors
    Custom Bundle :Yes
    Interchange Part Number 3 :11787557756, 11787558055, 11787526262, 11787545074
    Interchange Part Number 5 :Upstream, Downstream, Oxygen Sensor, O2 Sensor, BMW, 3.0L
    Country/Region of Manufacture :China
    Material :Stainless Steel
    Connector Color :As Picture Show
    Material :Stainless Steel
    Universal Fitment :No
    Items Included :Oxygen Sensors
    Color :Black, Silver
    Installation Position :Upstream, Downstream
    Fit for 1 :BMW 1 SERIES M L6-3.0 2011 Cylinder 1-6
    Fit for 2 :BMW 128I L6-3.0 2013-2008 Cylinder 1-6
    Fit for 3 :BMW 135I L6-3.0 2010-2008 Cylinder 1-6
    Fit for 4 :BMW 323I L6-2.5 2011-2010 Cylinder 1-6
    Fit for 5 :BMW 325I L6-3.0 2006 Cylinder 1-6
    Fit for 6 :BMW 325XI L6-3.0 2006 Cylinder 1-6
    Fit for 7 :BMW 328I L6-3.0 2013-2007 Cylinder 1-6
    Fit for 8 :BMW 328I XDRIVE L6-3.0 2013-2009 Cylinder 1-6
    Fit for 9 :BMW 328XI L6-3.0 2008-2007 Cylinder 1-6
    Fit for 10 :BMW 330I L6-3.0 2006 Cylinder 1-6
    Fit for 11 :BMW 330XI L6-3.0 2006 Cylinder 1-6
    Fit for 12 :BMW 335I L6-3.0 2010-2007 Cylinder 1-6
    Fit for 13 :BMW 335IS L6-3.0 2013-2011 Cylinder 1-6
    Fit for 14 :BMW 335I XDRIVE L6-3.0 2010-2009 Cylinder 1-6
    Fit for 15 :BMW 335XI L6-3.0 2008-2007 Cylinder 1-6
    Fit for 16 :BMW 528I L6-3.0 2010-2008 Cylinder 1-6
    Fit for 17 :BMW 528I XDRIVE L6-3.0 2010-2009 Cylinder 1-6


    (1). We gladly accepts payment via PayPal, We will ship your item(s) within 24 hours.

    (2). We ship this item to US only via USPS first class mail. It usually takes 3-6 working days to deliver.

    (3). Before payment,Please keep the consistency of Paypal address and ebay address.

    (4). Quantity orders are welcome!

    (1) All items will be shipped in 24 hours after receiving your payment .

    (2) We ship this item to US only via USPS first class mail. It usually takes 3-6 working days to deliver.

    (1). We offer 30 days return policy. Please contact us within 30 days t from the date you receive your order if you have any issues with the product or want return .Refund will be send after we got your resend package.

    (2). All returned items should be in the original packaging , return tracking information should be provided ..

    (3). Buyer is responsible for return shipping cost due to the problem not caused by item quality itself .

    (1).Negative feedback will not help resolve any problems you have, please contact us via eBay messages before leaving negative feedback, our customer service will make best effort to help you with the issues.

    (2).We maintain high standards of excellenceand  strive for 100% customer satisfaction! Feedback is very important to us. We request that you contact us immediately Before you give us neutral  or negative  feedback, so that we can satisfactorily address your concerns.

    Q1: Will this bulb fit my vehicle?
    A: We can match almost any vehicle to one of our bulb sizes. eBay only lets us include partial vehicle fitments per listing, but if your vehicle does not show up on the compatibility table at the top of our listings, welcome you to contact us for free consulation before purchasing a product.
     
    Q2: My item has not arrived, what's taking so long?
    A: Sometimes items take longer than expected, especially if it’s going far or to rural area. Check with your post office to see if your item has been held up. Sometimes USPS will not update a tracking number until it has arrived at its destination. If your item still has not arrived after a few days, let us know so we can double check for you and help solve it asap.
     
    Q3: Do I need to mention the Year, Make and Model in the notes when place order?
    A: YES. Please include the Year, Make, and Model in the notes section during checkout to ensure you receive everything needed for your kit!
     
    Q4: My bulbs won't fit, help!
    A: Special bulb holder may be required. See if you can take the holder from the stock bulb. If not, let us know.
    The bulb size may be wrong, double check the item you received with the item you ordered.
    Do you have an aftermarket lighting housing? These may not be perfectly fitted for aftermarket bulbs and will require some manual modifications.
     
    Q5: Neither side lighting up? Both sides flicker, flash, or work inconsistantly.
    A:Check the headlight fuses, and then check the ballast plugs to insure correct installation. If this doesn't work, there may be a voltage problem with the vehicle. You probably just need a relay or capacitor.
     
    Q6: WARNING ABOUT POLARITY
    Unlike halogen bulbs, LED are polarity sensitive.
    BEFORE you start your LED kit installation, verify the polarity on your vehicle by simply plugging the LED bulb into your vehicle socket.
    - if your light turns on, please proceed to install both bulbs onto your vehicle.
    - if your light DOES NOT turn on, disconnect the bulb and flip the socket in order to reverse the polarity (this will not damage your vehicle electrical system in any way). Once you made sure the LED bulb turns on, please proceed to install both bulbs onto your vehicle.
    Note: There is no convention when it comes to polarity. Different car manufactures have different polarity setup, even within the car model the polarity setup on your low beams and high beams might be different.


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    On Apr 5, 2026 at 02:32:09 PDT, seller added the following information:

    Datacaciques