Denso 234-4441 Oxygen Sensor - Downstream, Upstream, Upstream Left or Upstream Right

Denso OE Style Oxygen Sensor 234-4441

Denso 234-4441 is an OE Style heated oxygen sensor built for direct replacement on select Cadillac, Chevrolet, Buick, and GMC applications. It is engineered for a specific fit and uses a 4-wire, threaded design with a male connector for straightforward OE-style service.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific fit design for direct replacement service
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 14.76 in. wiring harness length
• Denso OE Style construction for factory-style fit and function

OE Style Construction

The Denso OE Style line is built to match original equipment requirements for fit and performance. This sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine operation, fuel control, and long service life. Part number 234-4441 is a direct replacement choice for drivers servicing emissions and air-fuel ratio feedback systems on vehicles such as the Cadillac ATS, Cadillac CTS, Chevrolet Equinox, and GMC Terrain.

This part cross-references ACDelco 213-4574 and Bosch 16132 for the same application.

Vehicle Fitment

• Fits 2019 Cadillac ATS, Upstream Left
• Fits 2019 Cadillac CTS, Upstream
• Fits 2013-2018 Cadillac ATS, Upstream
• Fits 2010-2018 Cadillac CTS, Upstream
• Fits 2013-2017 Chevrolet Equinox, Upstream
• Fits 2013-2017 Chevrolet Equinox, Downstream
• Fits 2012-2017 GMC Terrain, Upstream
• Fits 2012-2017 GMC Terrain, Downstream
• Fits 2012-2016 Buick LaCrosse, Upstream
• Fits 2012-2016 Buick LaCrosse, Downstream
• Fits 2012-2016 Cadillac SRX, Upstream
• Fits 2012-2016 Cadillac SRX, Downstream
• Fits 2014-2016 Chevrolet Impala Limited, Upstream
• Fits 2014-2016 Chevrolet Impala Limited, Downstream
• Fits 2010-2015 Chevrolet Camaro, Upstream
• Fits 2014 Cadillac CTS, Upstream Left
• Fits 2014 Cadillac CTS, Upstream Right
• Fits 2012-2013 Chevrolet Impala, Upstream
• Fits 2012-2013 Chevrolet Impala, Downstream
• Fits 2012 Chevrolet Captiva Sport, Upstream
• Fits 2012 Chevrolet Captiva Sport, Downstream

What It Helps Address

• Faulty oxygen sensor readings
• Check engine light concerns related to O2 sensor performance
• Rich or lean air-fuel mixture issues
• Reduced fuel economy caused by inaccurate exhaust feedback
• Emissions system service needs on OE-style applications

Installation Notes

Verify connector style, wire count, thread diameter, and sensor position before installation. This Denso oxygen sensor is a specific-fit replacement, so matching the vehicle year, make, model, and upstream or downstream location is important for correct installation. For best results, inspect the harness routing and exhaust threads before fitting the sensor.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The 234-4441 is built as an OE-style replacement for service work where factory-style dimensions and sensor response matter.