Denso 234-4341 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Denso OE Style Oxygen Sensor 234-4341

Denso 234-4341 is an OE Style heated oxygen sensor built for direct replacement on select Chevrolet, Cadillac, Pontiac, and Saturn applications. It is engineered for specific fitment, accurate signal response, and a first-time fit on vehicles such as the Chevrolet Malibu, Cadillac STS, and Cadillac SRX.

Key Features

• Heated oxygen sensor with specific fitment
• 4-wire design with female connector
• Threaded mounting type for direct replacement
• Wiring harness length: 25.59
• Thread diameter: 0.708
• OE Style construction for factory-style replacement

OE Style Design

Denso’s OE Style line is built to match original equipment requirements for fit and function. The 234-4341 oxygen sensor uses precision-built components and an exact-replacement design to help restore proper exhaust feedback on downstream applications. Denso also incorporates an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine operation and fuel control.

This part cross-references Bosch 15165 and NTK 21566 for the same application.

Vehicle Fitment

• Fits 2008-2012 Chevrolet Malibu, Downstream Right
• Fits 2007-2010 Cadillac STS, Downstream Left
• Fits 2007-2009 Cadillac SRX, Downstream Left
• Fits 2006-2009 Cadillac STS, Downstream
• Fits 2008-2009 Pontiac G6, Downstream Right
• Fits 2008-2009 Saturn Aura, Downstream Right

What It Helps Address

• Check engine light concerns related to oxygen sensor performance
• Incorrect exhaust oxygen readings affecting fuel mixture control
• Rough idle or drivability issues tied to sensor signal degradation
• Reduced fuel economy caused by inaccurate downstream feedback
• Replacement needs for worn or contaminated OE-style sensors

Installation Notes

Verify the connector style, wire count, threaded mounting, and downstream position before installation. This sensor is specific fit, so match the vehicle application exactly to the listed year, make, model, and position. For best results, inspect the exhaust threads and wiring routing before final tightening.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality and fitment accuracy. The 234-4341 is built for direct replacement use on the listed applications, including Chevrolet Malibu, Cadillac STS, Cadillac SRX, Pontiac G6, and Saturn Aura models.