Denso 234-4566 Oxygen Sensor
OE Quality 60-Day Returns
Denso
 Oxygen Sensor - OE Style

Denso 234-4566 Oxygen Sensor

Brand Denso 234-4566
Position Downstream, Upstream, Downstream Left, and Downstream Right
Wiring Harness Length 14.76
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 4
Connector Gender Female
Thread Diameter 0.708
Mounting Type Threaded
Product line Oxygen Sensor - OE Style
Fits Buick, Cadillac, Chevrolet, GMC, Pontiac, and Suzuki · 64 vehicles

OE style replacement. Precision-built for an exact, first-time fit.

Heated sensor. Helps support efficient engine performance and fuel economy.

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

Cross-references Bosch 16451, GMC 12634085 and GMC 12640453 for the same application. See all 6.

$68.16Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Denso OE Style Oxygen Sensor 234-4566

Denso 234-4566 is an OE Style heated oxygen sensor built for direct replacement on select Chevrolet, Cadillac, Buick, GMC, Pontiac, Suzuki, and related applications. It is engineered for a specific fit and uses a threaded mounting design for accurate installation on the intended exhaust location.

Key Features

  • Heated oxygen sensor for faster operating response
  • Specific fit design for direct replacement applications
  • 4-wire configuration with female connector
  • Threaded mounting type with 0.708 in. thread diameter
  • 14.76 in. wiring harness length for OE-style routing
  • Denso OE Style construction for factory-style fit and function

OE Style Construction

Denso’s OE Style line is built to match original equipment dimensions and electrical requirements for a first-time fit. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable exhaust feedback, consistent engine management, and long service life. This part cross-references Bosch 16451 for the same application.

Vehicle Fitment

  • Fits 2019-2020 Chevrolet Impala, upstream.
  • Fits 2019 Cadillac XTS, upstream.
  • Fits 2013-2018 Cadillac XTS, upstream.
  • Fits 2013-2018 Cadillac XTS, downstream.
  • Fits 2014-2018 Chevrolet Impala, upstream.
  • Fits 2014-2018 Chevrolet Impala, downstream.
  • Fits 2012-2017 Buick Enclave, downstream.
  • Fits 2012-2017 Chevrolet Traverse, downstream.
  • Fits 2017 GMC Acadia Limited, downstream.
  • Fits 2015-2016 Chevrolet Colorado, upstream.
  • Fits 2015-2016 Chevrolet Colorado, downstream.
  • Fits 2012-2016 GMC Acadia, downstream.
  • Fits 2015-2016 GMC Canyon, upstream.
  • Fits 2015-2016 GMC Canyon, downstream.
  • Fits 2013-2015 Chevrolet Camaro, downstream left.
  • Fits 2013-2015 Chevrolet Camaro, downstream right.
  • Fits 2008-2009 Chevrolet Equinox, downstream.
  • Fits 2008-2009 Pontiac Torrent, downstream.
  • Fits 2007-2009 Suzuki XL-7, downstream.

Common Issues This Sensor Can Address

  • Fault codes related to oxygen sensor response or heater circuit performance
  • Rough idle or inconsistent air-fuel feedback from a worn sensor
  • Reduced fuel economy caused by inaccurate exhaust readings
  • Failed emissions testing tied to a degraded upstream or downstream sensor
  • Check engine light concerns on Chevrolet Impala, Cadillac XTS, and GMC Acadia applications

Installation Notes

Verify the sensor position before ordering, since this part is listed for upstream, downstream, downstream left, and downstream right locations depending on the vehicle. Match the connector style, wire count, thread diameter, and harness length to the original sensor before installation. Use proper exhaust sensor service procedures and confirm the connector routes cleanly away from heat sources.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement use. The OE Style design is intended to deliver factory-style fit and dependable sensor performance on the listed Chevrolet, Cadillac, Buick, GMC, Pontiac, and Suzuki applications.

Related reading

This part fits 64 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionPositionNotes
2020ChevroletImpala—UpstreamO.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
2019CadillacXTS—UpstreamO.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
2019ChevroletImpala—UpstreamO.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
2018CadillacXTS—UpstreamOE Style
2018CadillacXTS—DownstreamOE Style
2018ChevroletImpala—UpstreamOE Style
2018ChevroletImpala—DownstreamOE Style
2017BuickEnclave—DownstreamOE Style
2017CadillacXTS—UpstreamOE Style
2017CadillacXTS—DownstreamOE Style
2017ChevroletImpala—UpstreamOE Style
2017ChevroletImpala—DownstreamOE Style
2017ChevroletTraverse—DownstreamOE Style
2017GMCAcadia Limited—DownstreamO.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
2016BuickEnclave—DownstreamOE Style
2016CadillacXTS—UpstreamOE Style
2016CadillacXTS—DownstreamOE Style
2016ChevroletColorado—UpstreamOE Style
2016ChevroletColorado—DownstreamOE Style
2016ChevroletImpala—UpstreamOE Style
2016ChevroletImpala—DownstreamOE Style
2016ChevroletTraverse—DownstreamOE Style
2016GMCAcadia—DownstreamOE Style
2016GMCCanyon—UpstreamOE Style
2016GMCCanyon—DownstreamOE Style
2015BuickEnclave—DownstreamOE Style
2015CadillacXTS—UpstreamOE Style
2015CadillacXTS—DownstreamOE Style
2015ChevroletCamaroManualDownstream LeftOE Style
2015ChevroletCamaro—Downstream RightOE Style
2015ChevroletColorado—UpstreamOE Style
2015ChevroletColorado—DownstreamOE Style
2015ChevroletImpala—UpstreamOE Style
2015ChevroletImpala—DownstreamOE Style
2015ChevroletTraverse—DownstreamOE Style
2015GMCAcadia—DownstreamOE Style
2015GMCCanyon—UpstreamOE Style
2015GMCCanyon—DownstreamOE Style
2014BuickEnclave—DownstreamOE Style
2014CadillacXTS—UpstreamOE Style
2014CadillacXTS—DownstreamOE Style
2014ChevroletCamaroManualDownstream LeftOE Style
2014ChevroletCamaro—Downstream RightOE Style
2014ChevroletImpala—UpstreamOE Style
2014ChevroletImpala—DownstreamOE Style
2014ChevroletTraverse—DownstreamOE Style
2014GMCAcadia—DownstreamOE Style
2013BuickEnclave—DownstreamOE Style
2013CadillacXTS—UpstreamOE Style
2013CadillacXTS—DownstreamOE Style
2013ChevroletCamaroManualDownstream LeftOE Style
2013ChevroletCamaro—Downstream RightOE Style
2013ChevroletTraverse—DownstreamOE Style
2013GMCAcadia—DownstreamOE Style
2012BuickEnclave—DownstreamOE Style
2012ChevroletTraverse—DownstreamOE Style
2012GMCAcadia—DownstreamOE Style
2009ChevroletEquinox—DownstreamOE Style
2009PontiacTorrent—DownstreamOE Style
2009SuzukiXL-7—DownstreamOE Style
2008ChevroletEquinox—DownstreamOE Style
2008PontiacTorrent—DownstreamOE Style
2008SuzukiXL-7—DownstreamOE Style
2007SuzukiXL-7—DownstreamOE Style
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 16451GMC — 12634085GMC — 12640453NTK — 21571Walker Products — 250-24773Walker Products — 350-34003