Bosch 11788657235 OE Oxygen Sensor (O2 Sensor)

The Bosch 11788657235 is an OE-specification oxygen sensor (O2 sensor) engineered to restore accurate air-fuel ratio monitoring and exhaust emissions control. As the original inventor of the automotive oxygen sensor, Bosch brings decades of manufacturing expertise to every unit, ensuring this sensor meets or exceeds the performance of the factory-installed part it replaces.

Oxygen sensors play a critical role in engine management. The sensor continuously measures oxygen content in the exhaust stream and relays that data to the engine control unit (ECU), which uses it to maintain the optimal air-fuel ratio of approximately 14.7:1. A failed or degraded O2 sensor can result in reduced fuel economy, rough idle, increased emissions, and illumination of the check engine light.

Key Features:

• OE-quality zirconia ceramic sensing element for fast, accurate lambda feedback
• Stainless steel body construction for resistance to exhaust heat and corrosion
• Fully factory-tested to ensure operation within design specifications before leaving the factory
• Engineered to match the original equipment sensor in form, fit, and function
• Helps restore fuel efficiency, reduce harmful emissions, and support proper catalytic converter operation
• Manufactured by Bosch — the company that invented the automotive oxygen sensor in the 1970s

Replacing a worn or faulty O2 sensor with a genuine Bosch unit is the most effective way to restore precise combustion control, reduce CO2 and hydrocarbon emissions, and maintain engine performance. This sensor is direct-fit and designed to install without modification.