Bosch Front Upstream Oxygen Sensor - OE Replacement

The Bosch Front Upstream Oxygen Sensor (O2 sensor, air-fuel ratio sensor) is an OE replacement. It is made to restore factory-level engine management performance. Mounted ahead of the catalytic converter, the upstream sensor measures the oxygen content of the exhaust. It sends that data to the engine control unit (ECU) so fuel delivery can be adjusted for efficient combustion.

Key Features:

• OE-style design intended to match the original sensor's function and performance
• Provides accurate exhaust oxygen readings for proper air-fuel mixture control
• Helps maintain fuel economy, smooth engine operation and low emissions
• Helps prevent check engine light problems caused by a worn or slow-responding sensor
• Made by Bosch, a long-time original equipment supplier of oxygen sensor technology

A failing upstream oxygen sensor can cause poor fuel economy, rough idle, hesitation, increased emissions and a lit check engine light. Replacing it with a Bosch OE replacement sensor helps bring back reliable engine management feedback. Choose the child item that matches your application.