234-4343 Upstream Oxygen O2 Sensor For Cadillac GMC Chevy Hummer Pontiac Buick

Product Description

Specification:

  • Brand New Oxygen Sensor
  • Quality Guaranteed Tested to Meet OE Specifications
  • Line length:400mm 
  • Placement on Vehicle: Downstream Oxygen sensor
  • 4 wire configuration
  • Direct Plug-In Replacement.
  • Built and tested to strict quality control standards
  •  Package Include  1pcs x Oxygen Sensor
  • Warranty:  3 year 



Note:

Please make sure the interchange part number matches the part you are replacing.

Please check our photos and make sure the part shown looks identical to your stock one.


Fit Vehicles:

How to install the oxygen sensor?

Step 1 - Some sensors are equipped with a heat shield that must be removed before the sensor removal, this is performed by removing any mounting bolts.

 

Step 2 - By using a regular socket it minimizes potential damage to the sensor body and the threads, this technique helps avoid stripping the old sensor upon removal.

 

Step 3 - Then, locate and disconnect the wiring connector, this step should be done before removing the sensor if the wiring is still attached.

 

Step 4 - Its important that the wiring harness connectors are exactly the same, each sensor is unique to it's position and is located in the system by its connector configuration. (Note: some replacement sensors have a universal electrical connector that must be configured to the wiring of the old sensor.)

 

Step 5 - Use a small wire brush to help clean the threaded port to ensure a proper seal of the new sensor. Gently install the new oxygen sensor by hand while keeping the wiring and connector free from bends.

 

Step 6 - Gently tighten the sensor while keeping wiring free from damage, these sensors need to be fairly snug to avoid leakage.

 

Step 7 - Once the sensor is tightened, reinstall any heat shields or bracing that had to be removed.

 

Step 8 - After the heat shield has been reinstalled, mount the connector to it's holder and reattach the connector back onto the wiring harness. If the car has diagnostic trouble codes, they will need to be cleared.

Must know before buying:

1. If you have any problem, you can contact customer service online at any time. We will reply and try to solve the problem for you within 24 hours.

2. If the purchase is wrong, please contact us first. We will return the product or help you find the right product for replacement according to the actual situation!

(the price, quality and function of the oxygen sensor are fully included in our warranty and return policy. However, any labor costs, dealer store costs or damage caused by incorrect installation are not included.)

How do I know the O2 sensor is good or not? 
A: The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation.

Use a 10-mega ohm digital voltmeter. Hook up the voltmeter's red probe to the sensor's signal wire and the black probe to engine ground. (Use back probe method, DO NOT pierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes.
  • Goes above range between 0.1 and 0.9 volt
  • Remains below 0.5 volts
  • Stays fixed at a particular voltage

You're free to choose replacement or refund if our sensor fails to work, in this case.


  • We accept Paypal only for the payment, and all orders should be paid through Ebay auction, please do not pay directly to our Paypal account.

  • Paypal allows to pay by Credit Card, Direct Debit, VISA, eCheck, or other methods, please kindly check Paypal for more information.

  • For multiple purchases, please add items to your Ebay shopping cart and pay once for entire order.


  • Orders will be shipped within 1-3 business day from California, USA.
  • orders will take 2-6 business days for the delivery, which will be shipped out with a tracking number .We ship to PayPal confirmed address only. Please update PayPal address before ordering.

  • One Year Unlimited Mileage Quality Guarantee
  • If the return is due to an error in our listing we will pay all shipping to correct the problem. If the return is due to an error on your part you would be responsible for the return shipping as well as the shipping for the correct units. In the event that an exchange is necessary please contact us for return shipping address.
  • If the product looks different than expected do not install it but rather contact us with the details so that we can make sure it is correct.
  • Our return period is 30 days from the date you received the order so please contact us as soon as you see any issues. Products that have been damaged during installation or altered will not be accepted.
  • Our Working Time:(GMT+8)Monday to Friday,9:00-18:00.
  • For inquires and customer support, please send your email via ebay email system.
  • All emails will be responded to within 24 hours during business days.
  • If You are not sure about what exactly, You need feel free to contact Us every working day (except on weekend) and get professional assistance within 24 hours, in that way You will get the right part and do not need to deal with returns - save your time!
  • Parts Information: Before purchase this parts, please check the compatibility information or call your local dealer to verify the correct OEM part number.
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