Denso 234-3048 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-3048

Denso 234-3048 is an OE Style heated oxygen sensor built for specific-fit replacement on select Audi, Jaguar, Saab, and Volkswagen applications. It is designed for upstream locations and uses a threaded mounting design with a 3-wire configuration for direct service replacement.

Key Features

• Heated oxygen sensor for upstream exhaust monitoring
• Specific-fit design for direct replacement on listed vehicles
• 3-wire sensor with male/female connector style
• Threaded mounting with 0.708 in. thread diameter
• 49.49 in. wiring harness length for routing flexibility
• OE Style construction from Denso for exact replacement fit

OE Style Design and Function

The Denso OE Style line is built to match original equipment fit and performance requirements. This oxygen sensor uses precision-built components for first-time fitment and incorporates Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination. That protection supports stable engine management, consistent fuel control, and long service life in demanding exhaust environments. The Denso 234-3048 is a practical replacement choice for upstream sensor service on vehicles such as the Audi 80, Audi 100, Jaguar XJ6, Saab 900, and Volkswagen Jetta.

This part cross-references Bosch (e.g., 13019, 13032) for the same application.

What This Sensor Helps Address

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

Installation Notes and Fitment

Fits 1990-1994 Audi V8 Quattro, upstream. Fits 1993 Jaguar Vanden Plas, upstream. Fits 1993 Jaguar XJ6, upstream. Fits 1993 Jaguar XJS, upstream. Fits 1988-1993 Saab 900, upstream. Fits 1988-1992 Audi 80, upstream. Fits 1988-1992 Audi 80 Quattro, upstream. Fits 1988-1992 Audi 90 Quattro, upstream. Fits 1981-1992 Jaguar XJ12, upstream. Fits 1980-1992 Jaguar XJS, upstream. Fits 1988-1992 Volkswagen Golf, upstream. Fits 1990-1992 Volkswagen Jetta, upstream. Fits 1985 Volkswagen Jetta, upstream. Fits 1989-1991 Audi 100, upstream. Fits 1989-1991 Audi 100 Quattro, upstream. Fits 1989-1991 Audi 200, upstream. Fits 1989-1991 Audi 200 Quattro, upstream. Fits 1988-1991 Audi 90, upstream. Fits 1990-1991 Audi Coupe Quattro, upstream. Fits 1988-1991 Jaguar Vanden Plas, upstream. Fits 1987-1991 Jaguar XJ6, upstream. Fits 1986-1991 Saab 9000, upstream. Fits 1988-1990 Volkswagen Fox, upstream. Fits 1990 Volkswagen Passat, upstream. Fits 1988-1989 Volkswagen Cabriolet, upstream. Fits 1987-1989 Volkswagen Jetta, upstream, sensor with 2 connectors. Fits 1986-1988 Audi 5000 Quattro, upstream. Fits 1987-1988 Volkswagen Quantum, upstream. Fits 1985-1987 Audi 4000, upstream. Fits 1987 Audi Coupe, upstream. Fits 1986-1987 Jaguar Vanden Plas, upstream, 3 lead sensor. Fits 1986-1987 Jaguar XJ6, upstream, 3 lead sensor. Fits 1986-1987 Saab 900, upstream, 3 lead sensor. Fits 1987 Volkswagen Cabriolet, upstream, 3 lead sensor. Fits 1987 Volkswagen Fox, upstream, 3 lead sensor. Fits 1985-1987 Volkswagen Golf, upstream, 3 lead sensor. Fits 1986 Volkswagen Jetta, upstream, 3 lead sensor. Fits 1986 Volkswagen Quantum, upstream, 3 lead sensor.

Before installation, confirm connector style, harness routing, and upstream sensor location against the vehicle’s original part. The threaded mount and specific-fit design are intended to match the listed applications without modification.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for fit, function, and durability. The OE Style construction is intended to deliver the correct part and the correct fit for the listed applications, including Audi, Jaguar, Saab, and Volkswagen models.