Denso 234-4565 Oxygen Sensor

Denso OE Style Oxygen Sensor 234-4565

Denso 234-4565 is an OE Style heated oxygen sensor built for direct replacement on select Cadillac, Buick, Chevrolet, and GMC applications. It is engineered for a specific fit and uses a threaded mounting design with a 4-wire female connector for straightforward replacement on the correct downstream or upstream location.

Key Features

• Heated oxygen sensor for precise exhaust monitoring
• Specific-fit design for the listed vehicle applications
• Threaded mounting type with 0.708 in. thread diameter
• 4-wire configuration with female connector
• Wiring harness length: 10.24 in.
• OE Style construction for direct replacement use
• Aluminum oxide trap layer helps protect the sensing element from silicone and lead contamination

OE Style Design Details

Denso’s OE Style line is built to match original equipment requirements for fit and function. The sensor is precision manufactured for the listed applications, helping ensure the correct installation point and electrical connection. For buyers searching for a Denso oxygen sensor 234-4565, this part is a direct-fit option for vehicles such as the Cadillac CTS, Cadillac ATS, Chevrolet Camaro, Chevrolet Traverse, Buick Enclave, and GMC Acadia.

This part cross-references Bosch 16449 for the same application.

Vehicle Fitment

• Fits 2019 Cadillac ATS, downstream left. O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
• Fits 2019 Cadillac CTS, downstream. O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
• Fits 2013-2018 Cadillac ATS, downstream.
• Fits 2015-2018 Cadillac CTS, downstream.
• Fits 2010 Cadillac CTS, downstream.
• Fits 2005-2007 Cadillac CTS, downstream.
• Fits 2012-2017 Buick Enclave, upstream.
• Fits 2012-2017 Chevrolet Caprice, upstream.
• Fits 2012-2017 Chevrolet Caprice, downstream.
• Fits 2012-2017 Chevrolet Traverse, upstream.
• Fits 2017 GMC Acadia Limited, upstream. O.E. Quality Direct Fit Replacement Sensor; Oxygen Sensor - OE Style
• Fits 2012-2016 GMC Acadia, upstream.
• Fits 2008-2014 Cadillac CTS, downstream right.
• Fits 2014 Cadillac CTS, downstream left.
• Fits 2008-2011 Cadillac CTS, downstream left.
• Fits 2010-2012 Chevrolet Camaro, downstream right.
• Fits 2008-2011 Cadillac STS, downstream right.
• Fits 2010-2011 Chevrolet Camaro, downstream.
• Fits 2004-2009 Cadillac SRX, downstream.
• Fits 2005-2007 Cadillac STS, downstream.

Common Issues This Sensor Can Address

• Fault codes related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn sensor
• Reduced fuel economy caused by inaccurate exhaust feedback
• Delayed sensor response during closed-loop operation
• Replacement needs after contamination from silicone or lead exposure

Installation Notes

Confirm the sensor position, connector style, thread diameter, and harness length before installation. This Denso 234-4565 oxygen sensor is specific-fit, so matching the listed year, make, model, and position is important for proper installation on Cadillac CTS, Cadillac ATS, Chevrolet Camaro, and related applications. Use the vehicle’s original routing and connector location to avoid strain on the harness.

Quality Assurance

Denso manufactures and tests these sensors to OE standards for replacement accuracy and consistent operation. The aluminum oxide trap layer is included to help protect the ceramic element and support long-term sensor performance in the exhaust stream.