Bosch 17218 Oxygen Sensor - Upstream Left

Bosch Wideband O2 Sensor for OE Fitment

Bosch 17218 is an Actual OE Oxygen Sensor built as a wideband air-fuel sensor for precise mixture feedback to the ECU. It is a specific-fit, heated sensor with a 5-wire harness and 6-terminal connection, made for direct replacement on select Porsche Panamera and Audi S6 applications.

The Bosch Actual OE Oxygen Sensor line focuses on OE-level signal accuracy and durable construction for modern engine management systems. Bosch pioneered the wideband A/F oxygen sensor design, and this part reflects that OE development with fast light-off, controlled heater operation, and a robust ceramic sensing element.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated design for faster sensor response during cold starts
• Specific-fit replacement with included wiring harness
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Oblong male connector with pin terminals
• Steel finish and metal housing for OE-style construction
• Bosch part number 17218 for direct catalog lookup

Detailed Description

Bosch 17218 is engineered for vehicles that rely on wideband oxygen sensor input for precise fuel control across the full lambda range. Unlike a traditional switching sensor, this wideband design provides the ECU with more detailed feedback, helping maintain accurate air-fuel management under changing load and temperature conditions. It is a direct replacement choice for drivers servicing 2010-2016 Porsche Panamera, upstream left, and 2008-2011 Audi S6, upstream.

This Bosch Actual OE Oxygen Sensor uses a threaded mount, 24.8-inch sealing-surface-to-connector length, and a 22.6-inch wiring harness length. The sensor is built for OE-style integration with a male oblong connector, male terminals, and six terminal positions. If you are searching for a Bosch 17218 oxygen sensor for Porsche Panamera upstream left or an Audi S6 upstream wideband O2 sensor, this part matches the listed applications.

This part cross-references 07L906262T and 97060612302 for the same application.

What It Helps Address

• Incorrect air-fuel ratio readings from a worn wideband sensor
• Check engine lights related to oxygen sensor performance
• Rough idle or drivability issues tied to mixture control
• Reduced fuel economy caused by inaccurate sensor feedback
• Emissions test failures linked to faulty upstream sensor data

Installation Notes and Tips

Verify the connector shape, terminal count, thread size, and sensor position before installation. This Bosch 17218 sensor is a specific-fit part, so confirm the vehicle application and upstream location on the Porsche Panamera or Audi S6 before replacing the original unit. Use proper oxygen sensor service tools and follow the vehicle manufacturer’s torque and routing specifications to protect the harness and threaded mount.

Quality Assurance

Bosch supplies OE-developed oxygen sensor technology to the aftermarket, and this Actual OE Oxygen Sensor line is built around the same wideband principles used in modern engine management systems. The design emphasizes accurate signal output, heater control, and durable construction for consistent operation in demanding thermal conditions.