Delphi ES20212 Oxygen Sensor - Center or Rear

Brand Delphi ES20212
Position Center
Connector Shape Square
Overall Length 810.0
Package Contents Oxygen Sensor, Instruction Sheet
Position(s) Center, Rear. For the position specific to your vehicle, refer to the Application tab.
Sensor Type Heated
Thread Size 18 x 1.5 mm
Wire Quantity 4
Fits Volvo · 16 vehicles

Heated sensor. Helps the oxygen sensor reach operating temperature quickly.

Square connector. Simplifies matching the electrical connection during installation.

OE heritage. Built with 100 years of OE experience and supplier knowledge.

Cross-references Bosch 15035, Bosch 15056 and DENSO Auto Parts 234-4734 for the same application. See all 17.

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Delphi ES20212 Oxygen Sensor for Volvo

Delphi ES20212 is a heated oxygen sensor built for direct-fit emission control service on select Volvo applications. It combines OE-based engineering with the correct connector, thread size, and lead length for a precise replacement in center and rear sensor locations.

Key Features

  • Heated oxygen sensor for faster operating temperature and stable signal output
  • 4-wire design with square connector for application-specific fitment
  • 18 x 1.5 mm thread size for proper exhaust installation
  • 810.0 overall length for routing on the listed Volvo applications
  • Includes oxygen sensor and instruction sheet
  • OE heritage informed by Delphi’s long experience supplying automakers

Detailed Description

Delphi ES20212 is an emission control sensor engineered for select Volvo S40, Volvo V50, Volvo S60, Volvo V70, and Volvo S70 applications. This heated oxygen sensor is specified for center and rear positions depending on the vehicle, and it uses a 4-wire configuration with a square connector to match the original-style electrical connection. The 18 x 1.5 mm thread size and 810.0 overall length support proper installation and harness routing on the listed fitments. This part cross-references Bosch 15035 and DENSO Auto Parts 234-4734 for the same application.

Vehicle Fitment

  • Fits 2005-2010 Volvo S40, center.
  • Fits 2005-2010 Volvo V50, center.
  • Fits 2001 Volvo S60, rear.
  • Fits 2000-2001 Volvo V70, rear.
  • Fits 2000 Volvo S70, rear.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect air-fuel ratio readings from a worn sensor
  • Slow sensor response during closed-loop operation
  • Emissions test failures tied to sensor degradation
  • Rough fuel control caused by inaccurate exhaust feedback

Installation Notes

Confirm the sensor position before ordering, since this part is listed for center and rear locations depending on the Volvo model and year. Verify thread size, connector shape, and lead length against the original sensor before installation. Follow the included instruction sheet and inspect the exhaust bung and wiring route for damage or contamination before fitting the new sensor.

Quality Assurance

Delphi builds this oxygen sensor using OE experience and engineering knowledge developed through decades of supplying major automakers. That OE-based background is reflected in the sensor’s fitment-specific design and emission control application coverage.

This part fits 16 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010VolvoS40Center
2010VolvoV50Center
2009VolvoS40Center
2009VolvoV50Center
2008VolvoS40Center
2008VolvoV50Center
2007VolvoS40Center
2007VolvoV50Center
2006VolvoS40Center
2006VolvoV50Center
2005VolvoS40Center
2005VolvoV50Center
2001VolvoS60Rear
2001VolvoV70Rear
2000VolvoS70Rear
2000VolvoV70Rear
Directly replaces or cross-references 17 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 15035Bosch — 15056DENSO Auto Parts — 234-4734NTK — 2559186272028627202-091255469125546-094974689497468-0250244083065171830651718-03071373430713734-0SG1710SU5873