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A0035427118 Auto Oxygen Sensor Air Fuel Ratio Sensor For Mercedes-Benz C230 C280 C350 E350 CLK Sprinter
| Place of Origin | China |
| Brand Name | RMOS |
| Model Number | A0035427118 |
Mercedes-Benz auto oxygen sensor
,Air fuel ratio sensor C230
,Oxygen sensor for Sprinter
The A0035427118 air-fuel ratio (A/F) sensor is the upstream regulating probe used on Mercedes-Benz M272 V6 and M273 V8 petrol engines across the C-Class, CLK, E-Class, ML, SLK and Sprinter ranges. It is a direct-fit replacement for the Bosch 0 258 017 019 application.
Unlike a conventional narrow-band oxygen sensor, this wideband A/F sensor measures the exact oxygen content of the exhaust gas and returns a linear signal to the ECU, so the stoichiometric air-fuel ratio can be held precisely under all driving conditions.
The integrated heater brings the planar ceramic element to operating temperature within seconds of a cold start, allowing the ECU to enter closed-loop control earlier and reducing cold-start emissions. The sensor features a stainless-steel shell, a planar zirconia ceramic element, and a laser-welded protection tube against contamination and thermal shock.
| Product Type | Air-Fuel Ratio Sensor (A/F Sensor), Regulating Probe |
|---|---|
| OE Part Number | A0035427118 (003 542 71 18) |
| Sensor Type | Heated Planar Wideband (A/F Ratio) |
| Number of Wires | 5-wire |
| Connector Shape | Rectangular, black |
| Thread Size | M18 x 1.5 |
| Spanner Size | 22 mm (7/8") |
| Operating Voltage | 12 V |
| Mounting Type | Direct-fit, screw-in |
| Warranty | 1 Year |
| Quality | OE Quality, 100% Tested |
- Five wires, wideband design: two wires feed the internal heater; the remaining wires serve the pump cell and reference (Nernst) cell. The sensor outputs a linear current signal rather than a switching voltage.
- Regulating probe: fitted before the catalytic converter as the ECU's primary fuel-control input; it is not interchangeable with the post-catalyst oxygen sensor.
- Direct-fit: OE-shaped multi-pin plug and pre-terminated cable — no cutting or splicing required.
- Petrol engines only: not suitable for BLUETEC diesel models.
- Installation position: confirm against the original sensor position on your vehicle. Always compare connector shape, pin count, cable length and thread before ordering.
- Torque: tighten to the vehicle manufacturer's specification (typically 40–55 N·m on an M18 x 1.5 boss). Do not use silicone-based sealant anywhere near the sensor.
| Mercedes-Benz | A0035427118, 0035427118 |
|---|---|
| Bosch | 0 258 017 019 |
Cross-reference numbers are listed for identification only. Always verify physical fitment — connector shape, pin count, cable length and thread size — against your original part before installation.
| Mercedes-Benz | C230 / C280 / C350 (W203) — 2005–2007 |
|---|---|
| Mercedes-Benz | C300 / C350 (W204) — 2008–2012 |
| Mercedes-Benz | CLK280 / CLK350 (W209) — 2005–2009 |
| Mercedes-Benz | E350 / E550 / E63 AMG (W211) — 2006–2009 |
| Mercedes-Benz | ML350 / ML550 (W164) — 2006–2011 |
| Mercedes-Benz | SLK280 / SLK350 (R171) — 2005–2011 |
| Mercedes-Benz | CL63 AMG (C216) |
| Mercedes-Benz | Sprinter (W906) — petrol models |
Vehicle list is compiled from aftermarket catalogue cross-references and is indicative only. Please confirm by OE number and by comparing the original sensor before ordering.
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