Bosch 11-78-1-720-537 Premium Oxygen Sensor

The Bosch 11-78-1-720-537 (Bosch part number 13052) is a premium original equipment oxygen sensor designed to monitor oxygen levels in the exhaust system for optimal engine performance and emissions control. As the world's leading supplier and original equipment manufacturer of oxygen sensors, Bosch brings over 40 years of expertise to this critical emissions component.

Key Features:

• Four-wire heated oxygen sensor design for faster response time
• Zirconia Nernst cell ceramic element for precise oxygen measurement
• OE connector included for direct-fit installation
• Cable length: 1520mm (approximately 60 inches)
• Original equipment quality and reliability
• Recommended replacement interval: 60,000 miles

This upstream oxygen sensor measures the concentration of oxygen in exhaust gases, allowing the engine control unit (ECU) to adjust the air-fuel mixture for optimal combustion efficiency, improved fuel economy, and reduced emissions. The heating element speeds up the oxygen-sensing process by quickly bringing the sensor to operating temperature. Cross-reference part numbers include BMW 11781720537, 11781714873, and Bosch 0258003052.