Bosch Oxygen Sensor P/N:11051

Give your engine computer the air-fuel feedback it relies on with the Bosch sensor 11051, a premium switching-type oxygen (O2) sensor cataloged for the upstream position. It fits many vehicles, among them the 1989-1994 Nissan Sentra, 1980-1987 Volkswagen Jetta and 1987-1988 Nissan Pathfinder, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.

Bosch introduced the original thimble-style oxygen sensor in 1976 and has supplied OE manufacturers for more than 50 years. This switching-type sensor sends air-fuel-ratio readings to the ECU, which uses them for combustion control. It is designed to help reduce emissions across a wide range of operating conditions.

• Precise feedback: Delivers air-fuel-ratio feedback to the ECU to support efficient operation and lower emissions.
• Built for heat: Designed to withstand exhaust streams up to 1,880°F. It uses a stainless steel housing, an advanced ceramic element and TSP coating to resist vibration and corrosion.
• Easy install: Has a direct-fit connector, and conductive anti-seize is already applied to the threads for a straightforward swap.
• Warranty: Bosch covers it with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.

Signs that an upstream oxygen sensor may need replacing include a check engine light, higher fuel consumption, a rough idle or hesitation, and a failed emissions test. Other faults can cause these symptoms, so diagnose the system first. If a worn sensor is the cause, this unit replaces it.