Bosch 18202 Oxygen Sensor - Upstream Right

Bosch Wideband O2 Sensor for Atlas and Atlas Cross Sport

Bosch Validated Oxygen Sensor 18202 is a specific-fit wideband air-fuel ratio sensor for select Volkswagen applications. It provides continuous, high-precision AFR feedback to the ECU, helping maintain accurate mixture control across changing load and temperature conditions.

Built with a heated design, 5-wire harness, threaded mounting, and a rectangular male connector, this Bosch wideband sensor is engineered for direct replacement service on the upstream right position. It is a practical choice for Volkswagen Atlas and Volkswagen Atlas Cross Sport owners looking for OE-style sensor performance.

Key Features

• Wideband oxygen sensor for precise air-fuel ratio measurement
• Heated design for faster sensor operation after startup
• Specific-fit replacement with included wiring harness
• Threaded mount with 18 mm thread diameter and 22 mm hex size
• Rectangular male connector with 6 terminals and 5 wires
• Steel finish and metal housing for durable underhood service
• Overall length: 31.1 in; harness length: 27.6 in

Product Details

Bosch 18202 is part of the Bosch Validated Oxygen Sensor line, which focuses on OE-proven replacement coverage for modern engine management systems. Bosch pioneered the wideband A/F oxygen sensor design, and this sensor follows that approach with fast light-off, controlled heater operation, and robust ceramic construction for stable readings during rapid load changes and thermal cycling. It is listed for the upstream right position on 2018-2023 Volkswagen Atlas and 2020-2023 Volkswagen Atlas Cross Sport applications. This part cross-references 03H906262AP for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings reported to the ECU
• Rough idle or drivability issues tied to mixture control
• Reduced fuel economy caused by inaccurate sensor feedback
• Emissions test failures linked to upstream sensor faults

Installation Notes

Fits 2018-2020 Volkswagen Atlas, upstream right. Fits 2021-2023 Volkswagen Atlas, upstream right. Fits 2020 Volkswagen Atlas Cross Sport, upstream right. Fits 2021-2023 Volkswagen Atlas Cross Sport, upstream right. Confirm connector shape, wire count, thread size, and sensor position before installation. Use proper oxygen sensor service tools and follow factory torque and routing specifications to avoid harness damage or exhaust leaks.

Quality Assurance

Bosch backs this sensor with more than five decades of OE development in oxygen sensing and engine management technology. The Bosch Validated Oxygen Sensor line is built to OE-level standards for accurate signal response and dependable service in modern Volkswagen applications.