Keeping the oxygen sensor fresh may improve your Mercedes' fuel economy as much as 10%-15% (which can save $100 each year in fuel costs on average). Keeping the oxygen sensor in good operating condition will also minimize exhaust emissions, reduce the risk of costly damage to the catalytic converter and ensure peak engine performance (no surging or hesitating).
For these reasons, the oxygen sensor should be considered a "tune-up" replacement item just like spark plugs, especially on older vehicles (those built before the mid-1990s).
Bosch oxygen sensors are an exact replacement for the original (OEM/OES). The construction, number of wires and connectors are the same as the OE, which eliminates the risks associated with splicing and crimping wires (required for many "universal" replacement oxygen sensors).
Some three- or four-wire universal oxygen sensors also do not have the same heater circuit watt ratings as the OE sensor, which may cause driveability and emissions problems in your Mercedes. There is also a potential for damaging the computer and/or oxygen sensor if a multiwire universal sensor is connected incorrectly. The lack of standardization of wire colors increases the risk of an incorrect installation.
So, when it comes time to replace your Mercedes' oxygen sensor, there's no question that you'll get the best fit and performance from the OE oxygen sensors built by Bosch.
Heed these tips and your Mercedes is well on its way to passing emissions with flying colors and saving you money in fuel costs and repair bills:
Tip #1: Increased fuel consumption, driveability problems (hesitation or surging), "Check Engine Light" lit or emissions test failure could all be signs of an oxygen sensor in need of replacement.
Tip #2: An additional consequence of any oxygen sensor failure may be damage to your Mercedes' catalytic converter - a very expensive way to find out your oxygen sensor needs replacement!
Tip #3: Checking the operation of the oxygen sensor and feedback control system should always be a priority anytime a vehicle fails an emissions test due to high HC or CO.
Tip #4: Keeping your Mercedes' oxygen sensor(s) fresh may improve fuel economy as much as 10%-15% (which can save $100 each year in fuel costs on average). Keeping the sensor in good operating condition will also minimize exhaust emissions, reduce the risk of costly damage to the catalytic converter and ensure peak engine performance (no surging or hesitating).