Bosch 11-78-1-743-994 Premium Oxygen Sensor

The Bosch 11-78-1-743-994 is a premium original equipment quality oxygen sensor designed to monitor exhaust oxygen levels and optimize engine performance. This 4-wire heated oxygen sensor features an 840mm (33.1 inch) cable length with an OE-style connector for direct plug-and-play installation.

Key Features:

• OEM-quality construction meeting original equipment specifications
• 4-wire heated design for rapid sensor activation and accurate readings
• 840mm cable length provides proper reach for front manifold installation
• Double laser-welded stainless steel body for complete submersion protection
• 100% functionally tested at high temperatures to ensure quality and reliability
• Includes OE-style connector for direct fit installation without modifications
• Recommended replacement interval of 100,000 miles

Bosch invented the automotive oxygen sensor in the late 1960s and remains the world's leading supplier of O2 sensors to vehicle manufacturers. This sensor helps maintain the optimal air-fuel ratio of 14.7:1 for complete combustion, reducing harmful emissions while improving fuel economy and protecting your catalytic converter from premature failure. The integrated heating element allows the sensor to reach operating temperature quickly, ensuring accurate readings from engine start-up.

Cross-reference part numbers include BMW 11781743994, Bosch 13949, and UPC 028851139496. This sensor is designed for front manifold pre-catalytic converter applications monitoring cylinders 1-3.