Delphi ES20009 Oxygen Sensor - Front or Rear Left
OE Quality 60-Day Returns
Delphi

Delphi ES20009 Oxygen Sensor - Front or Rear Left

Brand Delphi ES20009
Position Front
Connector Shape Triangle
Overall Length 580.0
Package Contents Oxygen Sensor, Instruction Sheet
Position(s) Front, Rear Left. 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 Buick, Chevrolet, GMC, Cadillac, Pontiac, and Saturn · 151 vehicles

Heated sensor. Provides faster operation for more responsive emissions monitoring.

Triangle connector. Simplifies installation with a distinctive, easy-to-match plug shape.

OE heritage. Built with 100 years of original-equipment experience.

Cross-references Bosch 15283, DENSO Auto Parts 234-4563 and DENSO Auto Parts 234-4673 for the same application. See all 24.

$107.53Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $107.53
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Oxygen Sensor options

Delphi ES20009 Oxygen Sensor Overview

The Delphi ES20009 is a heated oxygen sensor built for precise exhaust monitoring in a wide range of GM applications, including Buick Regal, Chevrolet Silverado 2500 HD, and GMC Sierra 3500 HD. It uses OE-based engineering from Delphi’s long history supplying original equipment to major automakers, with fitment coverage for front and rear left positions where specified.

Key Features

  • Heated oxygen sensor for faster operating temperature and stable signal output
  • 4-wire design with a triangle connector shape
  • 18 x 1.5 mm thread size for the listed applications
  • Overall length: 580.0
  • Package contents: oxygen sensor and instruction sheet
  • Position coverage includes front and rear left applications, depending on vehicle

Detailed Description

Delphi ES20009 is an OE-style oxygen sensor engineered for direct replacement in supported GM vehicles. It is listed for front applications on models such as the 2011-2017 Buick Regal, 2012-2017 Buick Verano, 2010-2016 Buick LaCrosse, 2014 Chevrolet Impala, 2008-2014 Chevrolet Malibu, 2007-2010 Cadillac STS, 2009-2010 Pontiac G6, 2007-2009 Cadillac SRX, and 2009 Saturn Aura. It also covers rear left applications on select 2003-2007 Chevrolet and GMC heavy-duty trucks and SUVs. The Delphi ES20009 is built around OE heritage and application-specific fitment to support accurate exhaust feedback in the vehicle’s emissions system.

This part cross-references Bosch 15283 for the same application.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect air-fuel ratio readings from a failing upstream or downstream sensor
  • Rough idle or drivability issues tied to exhaust feedback errors
  • Reduced fuel economy caused by inaccurate sensor data
  • Emissions test failures linked to sensor response problems

Installation Notes and Tips

Verify the exact position before ordering, since this sensor is listed for front and rear left locations depending on the vehicle. Confirm the 18 x 1.5 mm thread size, 4-wire configuration, triangle connector shape, and overall length of 580.0 against the original part. For fitment-specific applications, refer to the vehicle application tab and match the year, make, model, and position exactly.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge used by major automakers. That OE background is built into this aftermarket oxygen sensor to support consistent fitment and dependable emissions-system performance in the listed applications.

Related reading

This part fits 151 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody TypePositionNotes
2017BuickRegal——Front—
2017BuickVerano——Front—
2016BuickLaCrosse——Front—
2016BuickRegal——Front—
2016BuickVerano——Front—
2015BuickLaCrosse——Front—
2015BuickRegal——Front—
2015BuickVerano——Front—
2015ChevroletSilverado 2500 HD——Front—
2015ChevroletSilverado 3500 HDWTStandard Cab PickupFront—
2015ChevroletSilverado 3500 HDWTExtended Cab PickupFront—
2015ChevroletSilverado 3500 HDWTCrew Cab PickupFront—
2015ChevroletSilverado 3500 HDWT—Front—
2015ChevroletSilverado 3500 HDLTZ—Front—
2015ChevroletSilverado 3500 HDLTStandard Cab PickupFront—
2015ChevroletSilverado 3500 HDLTExtended Cab PickupFront—
2015ChevroletSilverado 3500 HDLTCrew Cab PickupFront—
2015ChevroletSilverado 3500 HDLT—Front—
2015ChevroletSilverado 3500 HDHigh Country—Front—
2015GMCSierra 2500 HD——Front—
2015GMCSierra 3500 HDSLT—Front—
2015GMCSierra 3500 HDSLEStandard Cab PickupFront—
2015GMCSierra 3500 HDSLEExtended Cab PickupFront—
2015GMCSierra 3500 HDSLECrew Cab PickupFront—
2015GMCSierra 3500 HDDenali—Front—
2015GMCSierra 3500 HDBaseStandard Cab PickupFront—
2015GMCSierra 3500 HDBaseExtended Cab PickupFront—
2015GMCSierra 3500 HDBaseCrew Cab PickupFront—
2014BuickLaCrosse——Front—
2014BuickRegal——Front—
2014BuickVerano——Front—
2014ChevroletImpala——Front—
2014ChevroletMalibu——Front—
2014ChevroletSilverado 2500 HD——Front—
2014ChevroletSilverado 3500 HDWTStandard Cab PickupFront—
2014ChevroletSilverado 3500 HDWTCrew Cab PickupFront—
2014ChevroletSilverado 3500 HDLTZ—Front—
2014ChevroletSilverado 3500 HDLTStandard Cab PickupFront—
2014ChevroletSilverado 3500 HDLTCrew Cab PickupFront—
2014GMCSierra 2500 HD——Front—
2014GMCSierra 3500 HDWTStandard Cab PickupFront—
2014GMCSierra 3500 HDWTCrew Cab PickupFront—
2014GMCSierra 3500 HDSLT—Front—
2014GMCSierra 3500 HDSLEStandard Cab PickupFront—
2014GMCSierra 3500 HDSLECrew Cab PickupFront—
2014GMCSierra 3500 HDDenali—Front—
2013BuickLaCrosse——Front—
2013BuickRegal——Front—
2013BuickVerano——Front—
2013ChevroletMalibu——Front—
2013ChevroletSilverado 2500 HD——Front—
2013ChevroletSilverado 3500 HD—Standard Cab PickupFront—
2013ChevroletSilverado 3500 HD—Extended Cab PickupFront—
2013ChevroletSilverado 3500 HD—Crew Cab PickupFront—
2013GMCSierra 2500 HD——Front—
2013GMCSierra 3500 HDWTStandard Cab PickupFront—
2013GMCSierra 3500 HDWTExtended Cab PickupFront—
2013GMCSierra 3500 HDWTCrew Cab PickupFront—
2013GMCSierra 3500 HDSLTExtended Cab PickupFront—
2013GMCSierra 3500 HDSLTCrew Cab PickupFront—
2013GMCSierra 3500 HDSLEStandard Cab PickupFront—
2013GMCSierra 3500 HDSLEExtended Cab PickupFront—
2013GMCSierra 3500 HDSLECrew Cab PickupFront—
2013GMCSierra 3500 HDDenali—Front—
2012BuickLaCrosse——Front—
2012BuickRegal——Front—
2012BuickVerano——Front—
2012ChevroletMalibu——Front—
2012ChevroletSilverado 2500 HD——Front—
2012ChevroletSilverado 3500 HD—Standard Cab PickupFront—
2012ChevroletSilverado 3500 HD—Extended Cab PickupFront—
2012ChevroletSilverado 3500 HD—Crew Cab PickupFront—
2012GMCSierra 2500 HD——Front—
2012GMCSierra 3500 HDWTStandard Cab PickupFront—
2012GMCSierra 3500 HDWTExtended Cab PickupFront—
2012GMCSierra 3500 HDWTCrew Cab PickupFront—
2012GMCSierra 3500 HDSLTExtended Cab PickupFront—
2012GMCSierra 3500 HDSLTCrew Cab PickupFront—
2012GMCSierra 3500 HDSLEStandard Cab PickupFront—
2012GMCSierra 3500 HDSLEExtended Cab PickupFront—
2012GMCSierra 3500 HDSLECrew Cab PickupFront—
2012GMCSierra 3500 HDDenali—Front—
2011BuickLaCrosse——Front—
2011BuickRegal——Front—
2011ChevroletMalibu——Front—
2011ChevroletSilverado 2500 HD——Front—
2011ChevroletSilverado 3500 HDWTStandard Cab PickupFront—
2011ChevroletSilverado 3500 HDWTExtended Cab PickupFront—
2011ChevroletSilverado 3500 HDWTCrew Cab PickupFront—
2011ChevroletSilverado 3500 HDLTZExtended Cab PickupFront—
2011ChevroletSilverado 3500 HDLTZCrew Cab PickupFront—
2011ChevroletSilverado 3500 HDLTStandard Cab PickupFront—
2011ChevroletSilverado 3500 HDLTExtended Cab PickupFront—
2011ChevroletSilverado 3500 HDLTCrew Cab PickupFront—
2011GMCSierra 2500 HD——Front—
2011GMCSierra 3500 HDWTStandard Cab PickupFront—
2011GMCSierra 3500 HDWTExtended Cab PickupFront—
2011GMCSierra 3500 HDWTCrew Cab PickupFront—
2011GMCSierra 3500 HDSLTExtended Cab PickupFront—
2011GMCSierra 3500 HDSLTCrew Cab PickupFront—
2011GMCSierra 3500 HDSLEStandard Cab PickupFront—
2011GMCSierra 3500 HDSLEExtended Cab PickupFront—
2011GMCSierra 3500 HDSLECrew Cab PickupFront—
2011GMCSierra 3500 HDDenali—Front—
2010BuickLaCrosse——Front—
2010CadillacSTS——Front—
2010ChevroletMalibuLTZ—Front—
2010ChevroletMalibuLT—Front—
2010PontiacG6——Front—
2009CadillacSRX——Front—
2009CadillacSTS——Front—
2009ChevroletMalibuLTZ—Front—
2009PontiacG6——Front—
2009SaturnAura——Front—
2008CadillacSRX——Front—
2008CadillacSTS——Front—
2008ChevroletMalibuLTZ—Front—
2007CadillacSRX——Front—
2007CadillacSTS——Front—
2007ChevroletSilverado 2500 HD Classic——Rear Left—
2007ChevroletSilverado 3500 Classic——Rear Left—
2007GMCSierra 2500 HD Classic——Rear Left—
2007GMCSierra 3500 Classic——Rear Left—
2006ChevroletAvalanche 2500——Rear Left—
2006ChevroletSilverado 2500 HD——Rear Left—
2006ChevroletSilverado 3500——Rear Left—
2006ChevroletSuburban 2500——Rear Left—
2006GMCSierra 2500 HD——Rear Left—
2006GMCSierra 3500——Rear Left—
2006GMCYukon XL 2500——Rear Left—
2005ChevroletAvalanche 2500——Rear Left—
2005ChevroletSilverado 2500 HD——Rear Left—
2005ChevroletSilverado 3500——Rear Left—
2005ChevroletSuburban 2500——Rear Left—
2005GMCSierra 2500 HD——Rear Left—
2005GMCSierra 3500——Rear Left—
2005GMCYukon XL 2500——Rear Left—
2004ChevroletAvalanche 2500——Rear Left—
2004ChevroletSilverado 2500 HD——Rear Left—
2004ChevroletSilverado 3500——Rear Left—
2004ChevroletSuburban 2500——Rear Left—
2004GMCSierra 2500 HD——Rear Left—
2004GMCSierra 3500——Rear Left—
2004GMCYukon XL 2500——Rear Left—
2003ChevroletAvalanche 2500——Rear Left—
2003ChevroletSilverado 2500 HD——Rear Left—
2003ChevroletSilverado 3500——Rear Left—
2003ChevroletSuburban 2500——Rear Left—
2003GMCSierra 2500 HD——Rear Left—
2003GMCSierra 3500——Rear Left—
2003GMCYukon XL 2500——Rear Left—
Directly replaces or cross-references 24 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 15283DENSO Auto Parts — 234-4563DENSO Auto Parts — 234-4673NTK — 21555Quality-Built — 151145S44045S81845S1018012 61 764821311622134116213429921346931257270712607145126165021262230825024492OS1689REA1578SG935SU1517SU9650SU11633