Denso 234-3000 Oxygen Sensor

Denso 234-3000 Oxygen Sensor Overview

The Denso 234-3000 is a universal heated oxygen sensor built for direct replacement use across a wide range of import and domestic applications. It is engineered to OE standards for accurate exhaust feedback, stable engine management, and consistent emissions control.

This part cross-references Bosch (e.g., 13005, 13008) for the same application.

Key Features

• Heated oxygen sensor design for faster operating temperature and quicker signal response
• Universal fit with a threaded mounting type for broad application coverage
• 3-wire configuration with an 11.77 wiring harness length
• 0.708 thread diameter for applications requiring this specification
• Built with Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination
• Precision-built for exact replacement and first-time fit

Product Details

Denso Universal oxygen sensors are manufactured and tested to strict OE standards, with attention to sensor accuracy, durability, and fitment consistency. The 234-3000 is a heated, threaded sensor designed for upstream locations and is listed across many vehicles including Mazda Millenia, Mazda 626, Ford Probe, Chevrolet Corvette, Volkswagen Golf, and Porsche 928 applications. For buyers searching by vehicle, this Denso oxygen sensor is a direct-fit option for many upstream oxygen sensor replacement jobs where reliable exhaust monitoring is required.

As part of Denso’s Universal line, this sensor is intended to simplify replacement selection while maintaining OE-style performance characteristics. The protective trap layer is used to reduce contamination-related wear, supporting long-term sensor stability in demanding exhaust environments.

Common Problems This Part Addresses

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent air-fuel control from a failing upstream sensor
• Reduced fuel economy caused by inaccurate exhaust readings
• Slow sensor response during closed-loop operation
• Emissions test failures tied to worn or contaminated oxygen sensors

Installation Notes and Fitment Tips

Compatible With upstream oxygen sensor locations across listed applications, including 1995-2002 Mazda Millenia, 1998-1999 Mazda 626, 1997 Ford Probe, 1993-1998 Volkswagen Golf, and 1993-1995 Chevrolet Corvette. Additional fitment coverage includes 1986-1995 Ford Taurus, 1988-1995 Saab 900, 1986-1991 Mercedes-Benz 300E, and 1984-1993 Ford Mustang.

Verify connector style, wire count, thread diameter, and sensor location before installation. This 3-wire heated sensor is universal, so matching the vehicle’s original sensor configuration is essential for proper operation. The part number 234-3000 should be confirmed against the existing sensor and application notes, especially on vehicles with California or chassis-specific requirements.

Quality Assurance

Denso manufactures and tests this oxygen sensor to strict OE standards for consistent performance and fit. The 234-3000 is built as a precision replacement part with contamination protection designed to support sensor longevity and dependable engine performance.