Bosch 17404 Wide-Band Oxygen Sensor Air Fuel Ratio Sensor

The Bosch 17404 is a premium wide-band oxygen sensor (air/fuel ratio sensor) designed as a direct-fit original equipment replacement. This upstream sensor monitors oxygen levels in the exhaust system and sends precise signals to the engine computer to optimize the air-fuel mixture, ensuring maximum fuel efficiency and reduced emissions.

Key Features:

• Wide-band oxygen sensor technology for precise air/fuel ratio monitoring
• 5-wire design with integrated OEM connector for easy installation
• Thread-in mounting style for secure fitment
• Includes wiring harness for complete installation
• Durable ceramic element construction using zirconium and yttrium oxides
• Tested to 1,000 degrees Celsius for functional and environmental robustness
• Patented universal connection system resistant to water, contamination, and extreme temperatures
• Upstream position sensor

Bosch is the world's leading supplier and original equipment manufacturer of oxygen sensors, having invented the automotive oxygen sensor. Each Bosch sensor is engineered for superior quality and performance, meeting or exceeding OEM specifications. A properly functioning oxygen sensor is essential for maintaining optimal engine performance, fuel economy, and extending catalytic converter life.

OEM Cross-Reference: BMW 11788644371