Bosch 13069 Oxygen Sensor - Upstream

Bosch OE Oxygen Sensor for BMW 318i

Bosch 13069 is an Actual OE Oxygen Sensor built as a standard replacement for narrow-band heated applications. It provides precise air-fuel-ratio feedback to the ECU, helping maintain stable combustion control and lower emissions on the BMW 318i and 318is upstream positions.

Compatible with 1991-1993 BMW 318i, upstream, and 1991 BMW 318is, upstream, this Bosch oxygen sensor uses a threaded metal housing, round female connector, and included wiring harness for a direct-fit service replacement. Bosch 13069 is engineered for consistent signal response under heat and vibration, making it a practical choice for BMW 318i oxygen sensor replacement work.

Key Features

• Actual OE Oxygen Sensor from Bosch
• Narrow-band heated sensor type for closed-loop fuel control
• Specific fit design for upstream BMW applications
• 4-wire configuration with included wiring harness
• Round female connector with pin terminals
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Metal housing for high-temperature service

Product Details

Bosch Actual OE Oxygen Sensor line draws on Bosch’s long OE development history in oxygen sensing, including narrowband designs that improve response time and lambda measurement accuracy. Part number 13069 uses advanced ceramic sensing elements and controlled heater operation to deliver steady feedback to the engine control unit across changing exhaust temperatures. For BMW 318i and BMW 318is upstream service, this Bosch 13069 sensor supports accurate mixture control where the original sensor has aged or drifted out of range.

This part cross-references Bosch 13069 for the same application.

Common Problems This Part Can Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by inaccurate air-fuel feedback
• Reduced fuel economy from a slow or aging upstream sensor
• Emissions test failure tied to mixture control faults
• Delayed closed-loop operation after startup

Installation Notes and Tips

Install Bosch 13069 in the upstream exhaust location specified for the vehicle. Verify the connector shape, wire count, and thread size before installation, and inspect the exhaust bung threads for damage or corrosion. Because this is a heated narrow-band sensor, confirm the harness routing keeps the lead away from exhaust heat and moving components.

Quality Assurance

Bosch supplies this oxygen sensor as an OE-style replacement backed by decades of oxygen-sensor development and aftermarket support. The design reflects Bosch’s focus on durable sensing elements, heater control, and stable signal output for emission-control service.