Denso 234-4648 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4648

Denso 234-4648 is an OE-style heated oxygen sensor built for specific downstream applications. It is engineered for a first-time fit and direct replacement performance on select Chevrolet Metro, Suzuki Swift, Pontiac Firefly, Suzuki Vitara, Chevrolet Tracker, and Geo Metro models.

The OE Style line focuses on exact replacement dimensions and connector fitment, making this Denso oxygen sensor a practical choice when replacing a downstream sensor on emissions-controlled vehicles.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for direct replacement applications
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 25.20 in. wiring harness length
• OE-style construction for accurate fit and function
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Detailed Description

This Denso oxygen sensor is designed for downstream use on 1996-2001 Chevrolet Metro, 1996-2001 Suzuki Swift, 1996-2000 Pontiac Firefly, 1999-2000 Suzuki Vitara, 1999-2000 Chevrolet Tracker, and 1996-1997 Geo Metro applications. Denso builds this OE Style part to match original equipment dimensions and electrical requirements, helping restore proper exhaust feedback on the vehicles listed above. Part number 234-4648 is a direct-fit replacement for drivers and technicians looking for a sensor that matches the original mounting and connector style.

This part cross-references Bosch 13041 and NTK 21524 for the same application.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Slow or inaccurate exhaust oxygen readings
• Emissions test failures caused by a worn sensor
• Poor fuel control from degraded sensor response
• Connector or fitment issues during replacement of the original sensor

Installation Notes and Tips

Verify the downstream location, connector style, wire count, and thread size before installation. Use the vehicle’s original routing path for the 25.20 in. harness to avoid heat damage or strain on the lead. Confirm the application by year, make, and model before ordering, especially on Chevrolet Metro, Suzuki Swift, Pontiac Firefly, Suzuki Vitara, Chevrolet Tracker, and Geo Metro vehicles.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The OE Style design is intended to deliver the correct part and fit for the listed applications, with contamination protection built into the sensor construction for improved durability.