Oxygen Sensor for 2006-2009 Mazda 3 - Bosch 15253

Bosch 15253 oxygen sensor for the 2006-2009 Mazda 3 4-cylinder 2.0L or 2.3L sends air-fuel-ratio readings to the ECU for combustion control. As a downstream Bosch O2 sensor, it is a narrow-band, heated switching-type unit.

• Heated narrow-band switching-type design with an integrated heater element
• Reaches operating temperature in under 10 seconds for quick closed-loop control
• Withstands exhaust streams up to 1,880°F
• Metal housing and TSP coating, built to resist vibration, corrosion and contamination
• Advanced ceramic elements and heater control for consistent output under heat and vibration

Quick facts

• Part: Bosch 15253 oxygen sensor
• Fits: 2006-2009 Mazda 3 4-cylinder 2.0L or 2.3L
• Position: Downstream
• Material: Metal
• Condition: New

A check engine light, rough running or poor fuel economy can mean an oxygen sensor is worn, though each of those signs has other possible causes. With the engine off and cool, look over the sensor's wiring and connector for damage or melted insulation, and find the cause before you replace the part.

Fits

This sensor is a direct-fit replacement for the 2006-2009 Mazda 3 with the L4-2.0L or L4-2.3L engine. This listing is one downstream sensor, and the 2006-2009 Mazda 3 4-cylinder 2.0L or 2.3L takes one.

Specifications

In the box

One oxygen sensor with its wiring harness. A mounting bracket is not included, and the old one may not be reusable.

Installation notes

• Conductive anti-seize is pre-applied to the threads.
• The direct-fit connector is made for quick installation.