Fitment
Compatible with Mercedes-Benz diesel vehicles equipped with SCR (Selective Catalytic Reduction) emission systems requiring NOx monitoring. Used in models including X253, C253, R172, W447, and GLC 220d / 250d / 350d diesel configurations depending on exhaust aftertreatment setup. OEM part number A0009052709 must be verified before installation.

FAQ
Q1: What does this NOx sensor measure?
A: It measures nitrogen oxides (NOx) in diesel exhaust gases for SCR emission system control.

Q2: Which vehicles is it compatible with?
A: It is used in selected Mercedes-Benz diesel models including X253, C253, R172, W447, and GLC diesel variants depending on system configuration.

Q3: Is this a universal part?
A: No, compatibility depends strictly on OEM part number A0009052709 and emission system design.

Q4: Does installation require programming?
A: Some vehicles may require ECU reset or diagnostic adaptation after replacement.

Q5: Where is it installed?
A: It is installed in the exhaust aftertreatment system, typically upstream or downstream of the SCR catalyst.