Description

The Bosch 15383 Downstream Oxygen (O₂) Sensor is engineered to meet or exceed OEM standards for select Ford, Lincoln, Mazda, and Mercury vehicles from 2011 to 2019 . Installed after the catalytic converter, this downstream O₂ sensor monitors exhaust gases to ensure proper emissions control and efficient catalytic converter operation. A failing downstream oxygen sensor can trigger check engine lights, reduce fuel efficiency, or cause emission test failures. This Bosch sensor restores accurate exhaust gas readings, supports proper air-fuel mixture management, and maintains overall engine performance. Constructed from durable, OEM-quality materials, it features a direct-fit, plug-and-play design for easy and reliable installation. Key Features & Benefits Genuine Bosch 15383 Downstream Oxygen Sensor Monitors catalytic converter efficiency and emissions Helps maintain fuel efficiency and engine performance Reduces drivability issues caused by faulty sensors Durable, OEM-quality construction for long service life Direct-fit, plug-and-play installation Engine Compatibility Gasoline engines (engine-specific fitment applies) Compatible with Ford, Lincoln, Mazda, and Mercury vehicles (verify engine code for exact fit) Vehicle Applications Ford (2011–2019) Lincoln (2011–2019) Mazda (2011–2019) Mercury (2011–2019) Part Number Bosch: 15383 Frequently Asked Questions Q1: Is this a downstream or upstream oxygen sensor? A: This is a downstream oxygen sensor, installed after the catalytic converter. Q2: Will this fit my Ford, Lincoln, Mazda, or Mercury? A: It fits many models from 2011–2019. Verify engine code and year for exact fitment. Q3: What are symptoms of a faulty downstream O₂ sensor? A: Check engine light, poor fuel economy, failed emissions tests, or rough engine performance. Q4: Is this a genuine Bosch part? A: Yes, Bosch 15383 is a high-quality OEM-standard oxygen sensor. Q5: Is installation difficult? A: No programming is required; it is a direct-fit, plug-and-play replacement.