Denso 234-4105 Oxygen Sensor - Upstream

Denso 234-4105 Oxygen Sensor Overview

Denso 234-4105 is an OE Style heated oxygen sensor built for specific-fit replacement in select Suzuki and Chevrolet applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on vehicles such as the 1999-2005 Suzuki Grand Vitara, 2001-2004 Chevrolet Tracker, 2004 Suzuki Vitara, and 2000 Suzuki Esteem.

Denso’s OE Style line focuses on direct replacement fitment and factory-style performance. This sensor uses a threaded mounting design, a 4-wire heated configuration, and a male connector with a 13.39-inch wiring harness length for a clean, application-specific installation.

Key Features

• OE Style replacement oxygen sensor for specific applications
• Heated sensor design for faster operating response
• 4-wire construction with male connector
• Threaded mounting type with 0.708-inch thread diameter
• 13.39-inch wiring harness length
• Built to Denso OE standards for exact replacement fit
• Includes Denso aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination

Detailed Product Information

The Denso 234-4105 oxygen sensor is designed to deliver the correct signal to the engine control system so fuel delivery and emissions control can stay within expected operating ranges. As an OE Style part, it is built for direct replacement use on the upstream position in supported vehicles, including the Suzuki Grand Vitara, Chevrolet Tracker, Suzuki Vitara, and Suzuki Esteem. If you are searching for an upstream oxygen sensor for 1999-2005 Suzuki Grand Vitara or a replacement oxygen sensor for 2001-2004 Chevrolet Tracker, this part number is a direct match for the listed applications.

This part cross-references Bosch 15040 and NTK 24281 for the same application. The Denso 234-4105 also reflects the brand’s focus on precision-built replacement parts, helping reduce fitment issues during service.

Common Problems This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn upstream sensor
• Reduced fuel economy caused by slow sensor response
• Rough idle or drivability issues tied to exhaust feedback errors
• Emissions test failures linked to a faulty oxygen sensor

Installation Notes and Tips

Verify the upstream position and connector style before installation. Confirm the threaded mounting size, wire count, and harness length against the original sensor on your vehicle. For best results, inspect the exhaust bung threads and wiring routing before tightening the sensor into place. This Denso 234-4105 is a specific-fit part, so matching the listed vehicle, year, and position is important for proper installation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality and fit. The aluminum oxide trap layer is used to help protect the sensing element from contamination, supporting long-term sensor performance in normal service conditions.

• Compatible With 1999-2005 Suzuki Grand Vitara, upstream
• Compatible With 2001-2004 Chevrolet Tracker, upstream
• Compatible With 2004 Suzuki Vitara, upstream
• Compatible With 2000 Suzuki Esteem, upstream