Oxygen Sensor for 1992-1995 BMW 318i & More - Bosch 13231

Give your engine computer accurate exhaust feedback with the Bosch sensor 13231, a switching-type oxygen sensor designed to send precise air-fuel-ratio readings to the ECU for stable combustion control and to help reduce emissions. It fits many vehicles, among them the 1992-1995 BMW 318i, 1992-1995 BMW 318is and 1995 BMW 318ti, as a direct-fit replacement in the upstream position for the listed applications. See the Buyer's Guide tab for the full list.

Bosch developed the original thimble-style oxygen sensor in 1976 and has supplied vehicle manufacturers for more than 50 years. That OE background carries into this aftermarket Bosch O2 sensor.

• Precise feedback: Delivers air-fuel-ratio feedback to the ECU, helping the engine run efficiently and keep emissions in check.
• Built for heat: Designed for exhaust streams up to 1,880°F, with a stainless steel housing, an advanced ceramic element and TSP coating to resist vibration and corrosion.
• Easy install: A direct-fit connector, with conductive anti-seize pre-applied to the threads.
• Warranty: Bosch covers it with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.

Signs an upstream oxygen sensor may need replacing include an illuminated check engine light, a rough idle, hesitation or a drop in fuel economy. These symptoms can have other causes, so diagnose the system before you replace the sensor.