Bosch 17219 Oxygen Sensor - Upstream

Bosch Actual OE Oxygen Sensor 17219

Bosch 17219 is an Actual OE oxygen sensor built for upstream air-fuel monitoring on select BMW and Mini applications. It uses a heated switching-type design with OE-level ceramic sensing elements and a specific-fit harness for direct replacement service.

Key Features

• Actual OE oxygen sensor from Bosch
• Heated narrow-band sensor design for upstream exhaust monitoring
• Specific fit with included wiring harness
• Threaded mounting with 18 mm thread size and 22 mm hex
• Male oblong connector with 5-wire configuration
• Built with high-temperature-resistant materials for demanding exhaust conditions
• OE-style replacement for BMW and Mini upstream sensor locations

Product Details

Bosch’s Actual OE Oxygen Sensor line is based on decades of original equipment development, including early thimble-style sensors and later planar narrowband designs that improved light-off speed, lambda accuracy, and closed-loop response. Part number 17219 continues that OE-focused approach with precise air-fuel-ratio feedback to the ECU, helping maintain stable combustion control and emissions performance across changing operating conditions. This Bosch 17219 oxygen sensor is a direct-fit replacement for upstream locations on select BMW M2, BMW M3, BMW M4, BMW X1, BMW X2, BMW X3, BMW X4, BMW 228i Gran Coupe, BMW 228i xDrive Gran Coupe, BMW M235i xDrive Gran Coupe, Mini Cooper, Mini Cooper Clubman, and Mini Cooper Countryman applications.

This part cross-references 11788659884 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings sent to the ECU
• Rough idle or unstable combustion control from a failing upstream sensor
• Reduced emissions performance caused by slow sensor response
• Delayed closed-loop operation after startup

Installation Notes

Verify the upstream sensor location, connector style, and thread size before installation. Bosch 17219 uses a threaded 18 mm mounting design, a male oblong connector, and a 5-wire harness layout. Because oxygen sensors are exposed to heat and vibration, inspect the exhaust bung and wiring routing during replacement to avoid damage to the new sensor.

Quality Assurance

Bosch backs this Actual OE Oxygen Sensor with OE development experience and materials selected for high thermal and vibration loads. The sensor is engineered to deliver consistent signal accuracy and durable service in demanding exhaust environments.