Product Description

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Specification:

* Line length:500mm,800mm

* 4&5 wire configuration

Interchange Part Number:  234-5091,234-4881,

Package Include  4pcs x Oxygen Sensor

Warranty: 3 years 

Fit Vehicles:

Please see compatibility chart.
MERCEDES-BENZ
C230 2.5L V6 2006 2007
C280 3.0L V6 2006 2007
C350 3.5L V6 2006 2007
CLK350 3.5L V6 2006 2007 2008 2009
CLK550 5.5L V8 2007 2008 2009
CLK63 AMG 6.3L V8 2007 2008 2009
SL63 AMG 6.3L V8 2009 2010 2011 2012
SLK280 3.0L V6 2006 2007 2008
SLK300 3.0L V6 2009 2010
SLK350 3.5L V6 2005 2006 2007 2008 2009 2010
”Please check the part number and item pics clearly, confirm suited to your needs.” 

(It is best to note that your car model is in the order

when you place an order, so that we have dedicated technicians to help you

check whether the product you have purchased matches your car model. Thank you)


Must know before buying:

The following information is for instructional and guidance reference only.

 We try and make them as accurate as we can.If Check Engine Light is on or an OBDII Trouble/Fault code occurs after installation, check the sensor with a voltmeter as below. If the sensor is good, further diagnosis is required. There're many different codes for specific functional failures, which are NOT necessarily relevant to the sensor. Find out what the Code means before leaving any feedbacks.

1. ONLY a defective sensor after tested by a voltmeter is applied to manufacturer warranty.

2. 20% restocking fee is required if buyer bought wrong items due to not paying attention to fitment information and ask for return.

The Price, Quality & Functionality of the O2 Sensor is fully covered under our warranty & return policy. However, refund for any labor cost, expense in a dealer shop or damage due to wrong installation is NOT covered.

Q: 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