Denso 234-3013 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-3013

Denso 234-3013 is a heated oxygen sensor built to OE-style specifications for direct replacement in select Volkswagen applications. It is engineered for exact fitment, stable signal performance, and reliable exhaust monitoring on upstream sensor locations.

Key Features

• Heated oxygen sensor for faster operating temperature and accurate emissions feedback
• Specific-fit design for direct replacement on listed Volkswagen models
• 3-wire configuration with male connector and threaded mounting
• Wiring harness length: 23.82 in.
• Thread diameter: 0.708 in.
• OE-style construction from Denso for precise replacement fit

OE Style Design

Denso’s OE Style line focuses on direct-fit replacement parts that match factory dimensions and connection points. For this oxygen sensor, that means the right connector style, harness length, and threaded mounting setup for a first-time fit on the listed Volkswagen EuroVan, Cabriolet, Fox, Corrado, Golf, and Jetta applications. The Denso 234-3013 is built for upstream use where accurate exhaust feedback is critical to fuel control and emissions performance.

This part cross-references Bosch 13211 and NTK 25504 for the same application.

Vehicle Fitment

• Fits 1992-1996 Volkswagen EuroVan, Upstream
• Fits 1990-1993 Volkswagen Cabriolet, Upstream; California exempt parts can be used on pollution controlled vehicles in California.; OE Style
• Fits 1991-1993 Volkswagen Fox, Upstream; California exempt parts can be used on pollution controlled vehicles in California.; OE Style
• Fits 1991-1992 Volkswagen Corrado, Upstream; OE Style
• Fits 1991-1992 Volkswagen Golf, Upstream; California exempt parts can be used on pollution controlled vehicles in California.; OE Style
• Fits 1992 Volkswagen Jetta, Upstream; California exempt parts can be used on pollution controlled vehicles in California.; OE Style
• Fits 1991 Volkswagen Jetta, Upstream; Calif; From Chassis #1G-M-020 636; OE Style

Common Repair Uses

• Replacing a failed upstream oxygen sensor on a Volkswagen EuroVan, Cabriolet, Fox, Corrado, Golf, or Jetta
• Restoring proper air-fuel ratio feedback after sensor aging or contamination
• Addressing check engine light concerns related to oxygen sensor performance
• Improving fuel control when the original sensor response has slowed
• Correcting emissions-monitoring faults tied to the upstream sensor circuit

Installation Notes

Verify the connector style, wire count, and threaded mounting location before installation. This is a specific-fit sensor, so match the vehicle year, model, and upstream position exactly to the fitment list. Inspect the exhaust bung threads and wiring routing during replacement to ensure the sensor seats properly and the harness is kept clear of heat sources.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life and stable engine management on the listed Volkswagen applications.