Oxygen Sensor for BMW E46 11781433940 Heated Piezoelectric Compatible with BMW Vehicles
Main Description
The WEIDA AUTO PARTS BMW E46 Oxygen Sensor 11781433940 with Heating Piezoelectric is built to restore precise exhaust monitoring in BMW models from the 3 Series family and beyond. Designed to fit BMW 323i, 330i, 525i, 530i, X3, X5, Z3, and Z4, this heated oxygen sensor delivers fast, accurate readings from the exhaust stream, helping your engine maintain optimal air–fuel balance, reduce emissions, and preserve performance. With OEM part compatibility (11781433940), it ensures a snug fit, reliable electrical connection, and stable operation across engine temperatures.
Featuring a heating element and a piezoelectric sensing technology, this sensor responds quickly as the engine warms up, minimizing cold-start hesitation and ensuring the ECU has timely data for fuel trimming. This translates to smoother idle, improved throttle response, and better fuel efficiency without sacrificing performance. Built to meet the demands of European specifications, it’s a dependable replacement that keeps your BMW running as smoothly as the day it rolled off the line.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
At intercyprus.com since 2002 — trusted for quality and reliability.
Benefits & Tips
- Faster engine heat-up and quicker stable fuel trims thanks to the integrated heating element, improving driveability on cold mornings.
- Accurate oxygen readings from the piezoelectric sensor help the ECU optimize performance and reduce emissions over a broad range of driving conditions.
- Ideal replacement for aging sensors in BMW E46-era vehicles, helping maintain engine efficiency and prolonging catalytic converter life.
Product Specifications
- Brand: WEIDA AUTO PARTS
- OEM No.: 11781433940
- Sensor Type: Piezoelectric
- Type: Heating
- Measuring Range: Fits BMW 323i, 330i, 525i, 530i, X3, X5, Z3, Z4
- Origin: Mainland China
Package Includes
- 1x Oxygen Sensor 11781433940
Warnings / Reminders
- Verify compatibility with your specific BMW model and VIN before installation.
- Disconnect the battery and allow the exhaust system to cool before replacing the sensor.
- Follow proper torque and connector orientation during installation to ensure reliable operation.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Since 2002, intercyprus.com has delivered trustworthy parts and dependable service—maintain your BMW with confidence.