Bosch Oxygen Sensor P/N:11051
Bosch 15914 oxygen sensor for the 2004-2009 Mazda 3 4-cylinder 2.0L and the 2006-2009 3 4-cylinder 2.3L measures exhaust oxygen from the downstream position and sends air-fuel-ratio readings to the ECU. This Bosch O2 sensor is a heated, narrow-band type that helps the ECU manage combustion and emissions.
A check engine light, lower fuel economy or rough running can mean the oxygen sensor is worn. An exhaust leak, a damaged wiring connector, the upstream sensor or a tired catalytic converter can be behind the same signs, so find the cause before buying.
This is a direct-fit replacement for the 2004-2009 Mazda 3 (L4-2.0L) and the 2006-2009 Mazda 3 (L4-2.3L). This listing is one downstream sensor, and each of those engines takes one.
Fit and size
Build and materials
One oxygen sensor with its wiring harness. A mounting bracket is not included.
Is this the right 2008 Mazda 3 oxygen sensor?
Yes. Bosch 15914 is a downstream sensor for the 2004-2009 Mazda 3 L4-2.0L and the 2006-2009 Mazda 3 L4-2.3L, so a 2008 Mazda 3 with either engine is covered.
Is this Bosch premium oxygen sensor heated?
Yes. Bosch 15914 is a heated, narrow-band oxygen sensor with an integrated heater element that reaches operating temperature in under 10 seconds.
What thread size and hex size does this oxygen sensor have?
The thread is M18 - 1.5 and the hex size is 22 mm. Length from the sealing surface to the end of the connector is 30.7 in.
Does this oxygen sensor come with its wiring harness?
Yes, the wiring harness is included with the sensor. A mounting bracket is not included.
Does this oxygen sensor come with anti-seize on the threads?
Yes. Conductive anti-seize is pre-applied to the threads of this sensor, and its connectors are direct-fit.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.