Denso 234-4342 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-4342

Denso 234-4342 is a specific-fit heated oxygen sensor built for OE-style replacement on select Chevrolet, Pontiac, and Saturn applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on the vehicles listed below.

Key Features

• Heated oxygen sensor with a specific-fit design
• OE Style replacement for direct application matching
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 9.84 in. wiring harness length for proper routing
• Built to Denso OE standards for replacement accuracy and durability
• Uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination

Product Details

Denso OE Style sensors are precision built to match the original part form and function. This oxygen sensor is designed to deliver the correct signal to the engine control system, helping maintain proper air-fuel control and emissions performance. The Denso 234-4342 is a direct replacement for upstream locations on select Chevrolet Cobalt, Chevrolet Malibu, Chevrolet HHR, Pontiac G5, Pontiac G6, Pontiac Solstice, Pontiac Pursuit, Saturn Ion, Saturn Sky, and Saturn Vue applications.

This part cross-references Bosch 15152 and NTK 21546 for the same application.

Vehicle Fitment

• Fits 2005-2008 Chevrolet Cobalt, Upstream
• Fits 2007-2008 Chevrolet Malibu, Upstream
• Fits 2006 Chevrolet HHR, Upstream
• Fits 2007-2008 Pontiac G5, Upstream
• Fits 2006-2007 Pontiac G6, Upstream
• Fits 2006-2007 Pontiac Solstice, Upstream
• Fits 2005-2006 Pontiac Pursuit, Upstream
• Fits 2005-2007 Saturn Ion, Upstream
• Fits 2007 Saturn Sky, Upstream
• Fits 2006-2007 Saturn Vue, Upstream

Installation Notes and Tips

Confirm the upstream sensor location and connector style before installation. Match the threaded mounting point, wire count, and harness length to the original sensor routing. For best results, inspect the exhaust threads and connector terminals before installing the new sensor.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The OE-style construction and contamination-resistant trap layer support long service life in demanding exhaust conditions.