Denso 234-4284 Oxygen Sensor - Downstream or Upstream

Denso OE Style Oxygen Sensor 234-4284

Denso 234-4284 is an OE Style heated oxygen sensor built for exact replacement and first-time fit. It is engineered for specific applications on Chevrolet Aveo, Pontiac Wave and Wave5, and Suzuki Swift+ models, with upstream and downstream coverage where listed.

The OE Style line focuses on direct-fit replacement parts that match factory requirements. This Denso oxygen sensor uses a threaded mounting design, a female connector, 4 wires, and a 15.75-inch wiring harness length for a clean installation on the correct application.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific fit design for direct replacement applications
• Threaded mounting type with 0.708-inch thread diameter
• 4-wire configuration with female connector
• 15.75-inch 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

Application Details

This Denso oxygen sensor 234-4284 is built for 2004-2005 Chevrolet Aveo, upstream and downstream; 2005 Pontiac Wave, upstream and downstream; 2005 Pontiac Wave5, upstream and downstream; and 2004-2005 Suzuki Swift+, upstream and downstream. It cross-references Bosch 13852 and NTK 24653 for the same application.

As an emission control sensor, it monitors exhaust oxygen content so the engine control system can adjust fuel delivery and maintain proper air-fuel ratio. That helps support smoother drivability, accurate fuel control, and consistent emissions system operation on the listed vehicles.

Common Issues This Part Can Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel trim readings
• Poor fuel economy caused by a failing sensor
• Rough idle or hesitation from inaccurate exhaust feedback
• Emissions test failure tied to sensor response issues

Installation Notes

Verify the sensor position, connector style, wire count, and thread size before installation. Use the vehicle-specific fitment listing to confirm whether the application is upstream or downstream on your Chevrolet Aveo, Pontiac Wave, Pontiac Wave5, or Suzuki Swift+.

Inspect the harness routing and connector condition during replacement, and make sure the sensor threads seat correctly in the exhaust bung. Because this is a specific-fit part, matching the exact application is important for proper operation.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards. The design is intended to deliver accurate replacement fitment and durable performance in demanding exhaust environments.