Denso 234-4893 Oxygen Sensor
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4893 Oxygen Sensor

Brand Denso 234-4893
Position Upstream Right
Connector Gender Female
Mounting Type Threaded
Sensor Type Heated
Thread Diameter 0.708
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 27.05
Product line OE Style
Fits Mercedes-Benz · 42 vehicles

OE style replacement. Precision-built for exact replacement and a first-time fit.

Heated sensor. Helps support faster operation and consistent performance.

Aluminum oxide trap layer. Protects the ceramic element from contamination for longer life.

Cross-references ACDelco 213-2897, ACDelco 213-3041 and BorgWarner OS1899 for the same application. See all 28.

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Denso OE Style Oxygen Sensor 234-4893

Denso 234-4893 is an OE Style heated oxygen sensor built for direct replacement on select Mercedes-Benz applications. It is engineered for exact fitment, stable signal output, and reliable exhaust monitoring in upstream and downstream locations.

Key Features

  • Heated oxygen sensor with a specific-fit design
  • 4-wire configuration with female connector
  • Threaded mounting with 0.708 in. thread diameter
  • 27.05 in. wiring harness length for application-specific routing
  • OE Style construction for direct replacement on select Mercedes-Benz models
  • Denso aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

This Denso oxygen sensor is manufactured and tested to OE standards for precise replacement fit and dependable performance. The OE Style line is built to match the original sensor form and function, helping restore accurate exhaust feedback for engine management. Part number 234-4893 is used across multiple Mercedes-Benz fitments, including C230, C240, C320, E320, E430, E500, CLK320, CLK430, CLK55 AMG, E55 AMG, C350, ML500, R500, and SLK55 AMG applications in upstream and downstream positions.

This part cross-references Bosch 16268 and NTK 25612 for the same application.

What It Helps Address

  • Check engine light caused by oxygen sensor faults
  • Incorrect air-fuel ratio readings
  • Reduced fuel economy from inaccurate exhaust feedback
  • Slow sensor response or heater circuit issues
  • Emissions test failures related to sensor performance

Installation Notes and Tips

Verify the sensor position, connector style, and harness length before installation. This is a specific-fit, threaded sensor, so match the vehicle application exactly and route the harness away from heat and moving components. For Mercedes-Benz fitments, confirm whether the application calls for upstream right, upstream left, downstream left, or upstream placement before ordering.

  • Fits 2005-2011 Mercedes-Benz SLK55 AMG, Upstream Right
  • Fits 2006-2007 Mercedes-Benz C350, Downstream Left
  • Fits 2007 Mercedes-Benz ML500, Upstream Right
  • Fits 2006-2007 Mercedes-Benz R500, Upstream Right
  • Fits 2006 Mercedes-Benz CLK500, Upstream Left
  • Fits 2004-2006 Mercedes-Benz E500, Upstream
  • Fits 2002-2005 Mercedes-Benz C230, Downstream
  • Fits 2003-2005 Mercedes-Benz C240, Upstream Right
  • Fits 2003-2005 Mercedes-Benz C320, Upstream Right
  • Fits 2004-2005 Mercedes-Benz E320, Upstream
  • Fits 2001-2003 Mercedes-Benz CLK320, Downstream Left
  • Fits 2001-2003 Mercedes-Benz CLK430, Downstream Left
  • Fits 2001-2002 Mercedes-Benz CLK55 AMG, Downstream Left
  • Fits 2001-2002 Mercedes-Benz E320, Upstream Right
  • Fits 2001-2002 Mercedes-Benz E430, Upstream Right
  • Fits 2002 Mercedes-Benz E55 AMG, Upstream Right
  • Fits 2001 Mercedes-Benz E55 AMG, Upstream Right

Quality Assurance

Denso manufactures this sensor to strict OE standards and tests each design for exact replacement fit and first-time installation accuracy. The OE Style construction and contamination-resistant trap layer are intended to support long-term sensor durability in demanding exhaust environments.

Related reading

This part fits 42 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeDrive TypePositionNotes
2011Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2010Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2009Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2008Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2007Mercedes-BenzC350—AWDDownstream LeftOE Style
2007Mercedes-BenzML500——Upstream RightOE Style
2007Mercedes-BenzR500——Upstream RightOE Style
2007Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2006Mercedes-BenzC350—AWDDownstream LeftOE Style
2006Mercedes-BenzCLK500——Upstream Leftw/ 27" Upstream Left Sensor; OE Style
2006Mercedes-BenzE500—AWDUpstreamOE Style
2006Mercedes-BenzR500——Upstream RightOE Style
2006Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2005Mercedes-BenzC230——DownstreamOE Style
2005Mercedes-BenzC240—AWDUpstream RightOE Style
2005Mercedes-BenzC320—AWDUpstream RightOE Style
2005Mercedes-BenzE320—AWDUpstreamOE Style
2005Mercedes-BenzE500—AWDUpstreamOE Style
2005Mercedes-BenzSLK55 AMG——Upstream RightOE Style
2004Mercedes-BenzC230——DownstreamOE Style
2004Mercedes-BenzC240—AWDUpstream RightOE Style
2004Mercedes-BenzC320—AWDUpstream RightOE Style
2004Mercedes-BenzE320—AWDUpstreamOE Style
2004Mercedes-BenzE500—AWDUpstreamOE Style
2003Mercedes-BenzC230——DownstreamOE Style
2003Mercedes-BenzC240—AWDUpstream RightOE Style
2003Mercedes-BenzC320—AWDUpstream RightOE Style
2003Mercedes-BenzCLK320Convertible—Downstream LeftOE Style
2003Mercedes-BenzCLK430——Downstream LeftOE Style
2002Mercedes-BenzC230——DownstreamOE Style
2002Mercedes-BenzCLK320——Downstream LeftOE Style
2002Mercedes-BenzCLK430——Downstream LeftOE Style
2002Mercedes-BenzCLK55 AMG——Downstream LeftOE Style
2002Mercedes-BenzE320——Upstream RightOE Style
2002Mercedes-BenzE430——Upstream RightOE Style
2002Mercedes-BenzE55 AMG——Upstream RightOE Style
2001Mercedes-BenzCLK320——Downstream LeftOE Style
2001Mercedes-BenzCLK430——Downstream LeftOE Style
2001Mercedes-BenzCLK55 AMG——Downstream LeftOE Style
2001Mercedes-BenzE320——Upstream RightOE Style
2001Mercedes-BenzE430——Upstream RightOE Style
2001Mercedes-BenzE55 AMG——Upstream RightFrom Chassis #B191888, X044900; OE Style
Directly replaces or cross-references 28 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 213-2897ACDelco — 213-3041BorgWarner — OS1899BorgWarner — OS1902Bosch — 16268Bosch — 16320Bosch — 16353Bosch — 16359Bosch — 16456Bosch — 16475Delphi — ES20174Delphi — ES20376Mercedes-Benz — 0015404717Mercedes-Benz — 0015407117Mercedes-Benz — 0015408517Mercedes-Benz — 0015408717Mercedes-Benz — 0025400617Mercedes-Benz — 0025400817NTK — 25612NTK — 25616Standard Ignition — SG244Standard Ignition — SG1145Standard Ignition — SG1148Standard Ignition — SG1151Walker Products — 250-24464Walker Products — 250-24468Walker Products — 350-34215Walker Products — 350-34560