Bosch 15885 Oxygen Sensor - Upstream

Overview

Bosch 15885 is a specific-fit wideband oxygen sensor for precise air-fuel ratio monitoring. It is built for the upstream position on select Porsche applications and uses Bosch’s Actual OE Oxygen Sensor line for OE-style replacement performance.

Key Features

• Wideband A/F sensor provides continuous air-fuel ratio measurement across the full lambda range.
• Heated design with optimized heater control for faster sensor response.
• Robust ceramic construction for stable operation through thermal cycling.
• Threaded mounting with an 18 mm thread diameter and 22 mm hex size.
• Five-wire design with a male oblong connector and blade terminals.

Detailed Description

This Bosch oxygen sensor is engineered for accurate feedback to the ECU, helping maintain precise mixture control under changing load and temperature conditions. The Bosch 15885 uses a wideband design rather than a traditional switching sensor, giving the engine management system more detailed information for fuel control, performance consistency, and emissions management. It is a direct-fit replacement for select Porsche 911 upstream applications and reflects Bosch’s long OE development history in modern engine management. This part cross-references URO 9A260618802 for the same application.

What It Helps Address

• Incorrect air-fuel ratio readings from a worn sensor.
• Delayed sensor response during cold start or load changes.
• Rough running caused by inaccurate mixture feedback.
• Reduced fuel economy linked to poor oxygen sensor performance.
• Higher emissions from degraded upstream sensor operation.

Installation Notes and Tips

Fits 2017-2019 Porsche 911, upstream. Verify the connector shape, wire count, and threaded mounting style before installation. The sensor uses a specific-fit design, so confirm the application by part number 15885 and compare the original sensor configuration before replacement.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development and supplies aftermarket sensors built to OE-proven standards. The Bosch 15885 is part of the Actual OE Oxygen Sensor line, which reflects Bosch’s focus on accurate measurement and durable construction.