Denso 234-4818 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Denso OE Style Oxygen Sensor 234-4818

Denso 234-4818 is an OE-style heated oxygen sensor built for specific-fit applications on select Cadillac, Chevrolet, and GMC vehicles. It is engineered for direct replacement performance with the correct connector, threaded mounting, and harness length for a first-time fit.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific fit design for direct replacement installation
• 4-wire configuration with female connector
• Threaded mounting type with 0.708 in. thread diameter
• 9.84 in. wiring harness length
• OE Style construction for factory-like fit and function
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

Denso’s OE Style oxygen sensor line is built and tested to OE standards, with attention to sensor response, connector fit, and durability. Part number 234-4818 is a heated, threaded oxygen sensor designed for downstream locations on select Cadillac CTS, Cadillac STS, Cadillac SRX, and Chevrolet Camaro applications. It also cross-references Bosch 16134 for the same application. For buyers searching for a Denso oxygen sensor 234-4818 or an OE-style downstream oxygen sensor for Cadillac CTS and Chevrolet Camaro, this part provides the correct fitment details needed for replacement work.

This sensor is used in emissions control systems to monitor exhaust oxygen content and support proper fuel control. The OE-style design helps maintain the original sensor layout on vehicles that require a specific-fit downstream sensor.

Compatible Vehicle Applications

• Fits 2008-2011 Cadillac CTS, Downstream Left
• Fits 2008-2011 Cadillac CTS, Downstream Right
• Fits 2008-2011 Cadillac STS, Downstream Right
• Fits 2010-2011 Chevrolet Camaro, Downstream
• Fits 2010-2011 Chevrolet Camaro, Downstream Right
• Fits 2010 Cadillac CTS, Downstream
• Fits 2005-2007 Cadillac CTS, Downstream
• Fits 2004-2009 Cadillac SRX, Downstream
• Fits 2005-2007 Cadillac STS, Downstream

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn downstream sensor
• Slow sensor response caused by age or contamination
• Emissions test failures tied to sensor malfunction
• Rough fuel control from inaccurate exhaust readings

Installation Notes and Tips

Verify the connector style, wire count, and downstream position before installation. This is a specific-fit sensor with a threaded mount, so matching the original application is important for proper installation. Confirm the vehicle year, make, model, and sensor location against the fitment list before ordering Denso 234-4818.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards. The design includes protection for the sensing element against silicone and lead contamination, supporting long-term sensor stability and consistent operation.