Fitment

Fits for:

• Mercedes-Benz CLA-Class (C117 / X117)
• Mercedes-Benz GLA-Class (X156)
• Mercedes-Benz A-Class (W176)
• Mercedes-Benz B-Class (W246)
• Mercedes-Benz C-Class (W205) (selected petrol/diesel SCR variants depending on configuration)
• Mercedes-Benz E-Class (W212 / W213) (selected SCR applications)
• Mercedes-Benz S-Class (W221 / W222 / C217 / A217)
• Mercedes-Benz GLE / ML / GL-Class (W166 / X166)
• Mercedes-Benz Sprinter / Vito (W447)
• Engine: Mercedes-Benz petrol & diesel engines with SCR / emissions control systems (varies by model)
• Position: Exhaust NOx sensor (SCR inlet or outlet depending on system layout)
• OE / Cross References: A0009056304 / 0009056304 / 5WK97250 / SNS250 / A0009054510 / A0009059803 / A3C01131300-613

FAQ

Q1: Are A0009056304 and 5WK97250 the same sensor?
A1: Yes. A0009056304 is the Mercedes-Benz OE number, and 5WK97250 is the corresponding NOx sensor reference used in the same emissions system.

Q2: What vehicles use this sensor?
A2: It is widely used on Mercedes-Benz models including CLA, GLA, A-Class, B-Class, C-Class, E-Class, S-Class, and some Sprinter/Vito variants equipped with SCR or emissions monitoring systems.

Q3: Is this inlet or outlet sensor?
A3: It can be used as either upstream or downstream NOx sensor depending on the exhaust configuration and engine application.

Q4: What does this sensor do?
A4: It measures nitrogen oxide (NOx) levels in exhaust gases and sends real-time data to the ECU, which adjusts AdBlue dosing to reduce emissions and maintain SCR efficiency.