Description

The Bosch 16094 Downstream Oxygen (O₂) Sensor is engineered to meet or exceed OEM standards for BMW M2, M3, and M4 models from 2015 to 2021 with 3.0L engines. Positioned after the catalytic converter, this downstream O₂ sensor monitors exhaust gases to ensure proper emissions control and optimal catalytic converter function. A failing downstream oxygen sensor can trigger check engine lights, reduce fuel efficiency, or lead to failed emissions tests. This Bosch sensor restores accurate exhaust gas readings, supports proper air-fuel mixture management, and maintains engine performance. Built with durable materials, it features a direct-fit, plug-and-play design for simple and reliable installation. Key Features & Benefits Genuine Bosch 16094 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 BMW 3.0L turbocharged engines (engine-specific fitment applies) Compatible with BMW M2, M3, M4 2015–2021 models Vehicle Applications BMW M2 (2016–2021) BMW M3 (2015–2021) BMW M4 (2015–2021) Part Number Bosch: 16094 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 BMW M2, M3, or M4? A: Yes, it fits BMW M2 (2016–2021), M3 (2015–2021), and M4 (2015–2021) with 3.0 L engines. 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 16094 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.