Bosch 17018 oxygen sensor for the 2000-2002 Subaru Forester H4 2.5L and other vehicles reads the exhaust and reports the air-fuel ratio to the engine computer. It is an upstream wide-band type, which gives the ECU more detailed air-fuel data than a switching sensor.
- Wide-band design that measures the air-fuel ratio continuously across the full lambda range
- Reaches operating temperature in less than 7 seconds for quick closed-loop control
- Integrated heater element and TSP coating to resist vibration, corrosion and contamination
- Withstands exhaust streams up to 1,880°F
- Ceramic construction with optimized heater control for rapid load changes and harsh thermal cycles
Quick facts
- Part: Bosch 17018 oxygen sensor
- Fits: 2000-2002 Subaru Forester H4 2.5L and other vehicles
- Position: Upstream
- Material: Metal
- Condition: New
A worn wideband sensor can show up as a check engine light, poor fuel economy or a rough idle, though other faults produce the same signs. Before replacing the sensor, and with the engine off and cool, look over the wiring and connector for cracks, melted insulation or corrosion; a shop can run any test that needs the engine running.
Fits
The vehicles it fits include the 2000-2002 Subaru Outback H4 2.5L, and it is also the oxygen sensor for the 2000-2002 Subaru Impreza H4 2.5L. This listing is one sensor, which is the quantity the H4 2.5L takes. If your car is not named here, look it up by year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Upstream
- Quantity per application: 1
- Thread size: M18 - 1.5
- Hex size: 22 mm
- Overall length: 18.1 in
- Length (sealing surface to end of connector): 16.9 in
- Terminal quantity: 6
Build and materials
- Sensor type: Wide-band
- Housing material: Metal
- Mounting type: Threaded
- Wiring harness: included
- Condition: New
- Warranty: Bosch 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks
In the box
One oxygen sensor with its wiring harness.
Installation notes
- Conductive anti-seize is pre-applied on the threads.
- Direct-fit connectors are designed for quick installation.
Frequently Asked Questions
Is Bosch 17018 an oxygen sensor for the 2000-2002 Subaru Outback H4 2.5L?
Yes. Bosch 17018 is an upstream wide-band oxygen sensor that fits the 2000-2002 Subaru Outback H4 2.5L, and the listing is one sensor.
Is this an O2 sensor that fits a 2001 Subaru Forester H4 2.5L?
Yes. This sensor fits the 2000-2002 Subaru Forester H4 2.5L, which includes 2001. For another car, search the "Vehicles it fits" section by year and engine.
Is this Bosch premium oxygen sensor a wideband or a switching type?
Wideband. Bosch 17018 is a wide-band A/F sensor with 6 terminals, an M18 - 1.5 thread and a 22 mm hex.
Does this Bosch O2 sensor include its wiring harness?
Yes. The listing is one sensor with its wiring harness, and the threads come with pre-applied conductive anti-seize.
What warranty covers the Bosch 17018 oxygen sensor?
Bosch backs it with a 1-year, unlimited-mileage warranty for non-commercial passenger cars and light trucks.
