Denso 234-4911 Oxygen Sensor - Downstream or Upstream

Denso OE Style Oxygen Sensor 234-4911

Denso 234-4911 is an OE-style heated oxygen sensor built for direct replacement on select Porsche and Saab applications. It is engineered for specific fitment, threaded mounting, and a 4-wire male connector layout to match the original sensor configuration.

The OE Style line focuses on exact replacement fit and factory-style performance. This sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine operation and consistent fuel control.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct replacement
• 4-wire configuration with male connector
• Threaded mounting with 0.708 in. thread diameter
• Wiring harness length: 26.38 in.
• OE Style replacement for factory-matched fitment

Detailed Description

Denso 234-4911 is designed for vehicles that require an OE-style oxygen sensor with the correct connector, thread size, and harness length. It fits 2000-2009 Saab 9-5, upstream; 2000-2003 Saab 9-3, upstream; 2002-2005 Porsche 911, upstream; and 2004-2005 Porsche Carrera GT, upstream or downstream. This part number is also referenced by 234-4911 in OE-style replacement listings for the same application.

Built to strict OE standards, this sensor is precision made for first-time fitment and consistent signal performance. It is a practical choice for drivers servicing Saab 9-5, Saab 9-3, Porsche 911, or Porsche Carrera GT exhaust and emissions systems where the original sensor specification must be matched closely.

This part cross-references Bosch 16433 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel economy from a failing upstream or downstream sensor
• Slow sensor response during closed-loop operation
• Emissions system faults tied to worn sensor elements

Installation Notes and Tips

Confirm the sensor position before ordering, since this application includes upstream and downstream locations depending on vehicle. Verify connector style, thread diameter, and harness length against the original part before installation. Use proper exhaust sensor removal tools and follow the vehicle service procedure for wiring routing and torque specifications.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for direct replacement use. The OE Style design is intended to deliver the correct fit and factory-matched configuration for the listed Saab and Porsche applications.