Denso 234-4298 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4298

Denso 234-4298 is a specific-fit heated oxygen sensor built to OE-style standards for direct replacement on select Chevrolet, Pontiac, and Suzuki applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on downstream locations.

Key Features

• Specific-fit heated oxygen sensor for direct replacement
• OE Style design for factory-style fit and function
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 15.20 in. wiring harness length for application-specific routing
• Precision-built to match original equipment dimensions
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

Denso 234-4298 is designed for downstream exhaust monitoring on 2009-2011 Chevrolet Aveo, 2009-2011 Chevrolet Aveo5, 2009-2010 Pontiac G3, 2009 Pontiac G3 Wave, and 2009 Suzuki Swift+. This OE Style oxygen sensor supports accurate air-fuel feedback and consistent emissions system operation in vehicles that require a direct-fit downstream sensor. The part number 234-4298 is also a useful reference when cross-shopping replacement options for the same application.

This part cross-references ACDelco 213-4551 and Bosch 18034 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel trim readings from a worn downstream sensor
• Reduced fuel economy caused by inaccurate exhaust feedback
• Emissions test failures tied to sensor response issues
• Rougher engine operation from degraded sensor output

Installation Notes and Tips

Verify downstream placement before installation and confirm connector style, thread diameter, and harness length against the original sensor. For 2009-2011 Chevrolet Aveo and Aveo5, 2009-2010 Pontiac G3, 2009 Pontiac G3 Wave, and 2009 Suzuki Swift+, match the OE-style routing and threaded mount to avoid fitment issues. Inspect the exhaust bung threads and connector condition before installing Denso 234-4298.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for dimensional accuracy and dependable operation. The design includes a protective aluminum oxide trap layer to help shield the sensing element from silicone and lead contamination, supporting long-term sensor performance.