Bosch Oxygen Sensor P/N:16185

Keep fuel trim accurate and closed-loop control quick with the Bosch Switching-Type Oxygen (O2) Sensor 16185, a narrow-band, 4-wire heated sensor that reports the exhaust air-fuel ratio to the ECU for stable combustion control. It installs as a direct-fit replacement on the 2016 Hyundai Elantra (L4-1.8L); 2018-2021 Hyundai Kona, 2016-2019 Hyundai Sonata, and 2019-2021 Hyundai Tucson (L4-2.0L); the 2016 and 2019-2024 Kia Forte (L4-1.8L and L4-2.0L); and the 2017-2020 Kia Optima (L4-2.0L).

• Precise feedback: Delivers air-fuel-ratio measurements to the ECU, helping maintain stable combustion control and reduce emissions across a wide range of operating conditions.
• Fast light-off: The narrow-band heated design reaches operating temperature in under 10 seconds for quicker closed-loop control.
• Built to endure: Rated for exhaust streams up to 1,880°F, with a metal housing, ceramic element, and TSP coating to resist vibration and corrosion.
• Easy install: Uses a direct-fit connector, an included wiring harness, and pre-applied conductive anti-seize on the M18-1.5 threads (22 mm hex).

The sensor measures oxygen content in the exhaust and switches its signal so the ECU can trim fueling in closed loop. If a slow or failed oxygen sensor is behind rough running, poor fuel economy, or a lit check-engine light, this replaces it — diagnose the cause first, since those symptoms have other possible sources. A wiring harness is included; a mounting bracket is not. Country of origin: United States. Backed by a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.

Manufacturer part number 16185.