NGK NTK Oxygen Lambda Sensor OZA739-EE17

NGK NTK Oxygen Lambda Sensor Fits Subaru Forester, Impreza, Liberty, Outback

NTK is the world's largest manufacturer of oxygen sensors. NTK Oxygen Sensors are designed to maintain optimal fuel efficiency and are supplied with a direct-fit connector similar to those used by the OEM manufacturer for easy installation.

Every NTK Oxygen Sensor undergoes a complex three test process, including long life, high temperature & anti-poisoning, to guarantee high quality and durability. As future emissions standards become tougher, NTK is further developing oxygen sensor technologies to help provide cleaner, more efficient engines.

An oxygen sensor continually detects the oxygen content in the exhaust gases of an engine. The oxygen sensor output signal informs the vehicle's ECU (Electronic Control Unit) whether the AFR (Air-Fuel Ratio) is lean or rich. Based on this, the ECU adjusts the amount of fuel injected into the engine to achieve an optimal AFR.

Suitable for the various Australian vehicle models listed below. This is a guide only.
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Key features

• Direct-fit connector for easy installation
• Maintains optimal fuel efficiency
• Undergoes rigorous testing for durability and longevity
• Helps reduce harmful emissions
• Compatible with a range of Subaru models
• Improves engine performance by optimising air-fuel ratio

Technical details

• Brand: NTK
• Type: Oxygen Lambda Sensor
• OEM equivalent: Yes
• Testing: Long life, high temperature, anti-poisoning
• Fitment: Direct replacement for specified Subaru models

Applications / fitment

This oxygen sensor is typically used in various Subaru models to monitor and optimise engine performance.

• Subaru Forester 2.0 SF, SF5 AWD 1997-2002
• Subaru Forester 2.5 SG AWD 2002-2005
• Subaru Forester 2.5 SG, SG9 RX Nato AWD 2002-2005
• Subaru Impreza 2.0 GD, GD9 i AWD 1999-2007
• Subaru Impreza 2.0 GG i AWD 2000-2007
• Subaru Liberty 2.0 BE, BE5 AWD 1998-2003
• Subaru Liberty 2.0 BH, BH5 i GX AWD 1998-2003
• Subaru Outback 2.5 BH, BH9 AWD 2000-2003

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Frequently asked questions

How do I install the oxygen sensor?

Installation typically requires basic tools and should be done following the vehicle manufacturer's guidelines.

Is this sensor compatible with my vehicle?

Please refer to the fitment list provided or add your vehicle details to My Garage for a guaranteed fit.

What are the signs of a faulty oxygen sensor?

Common signs include poor fuel economy, rough engine performance, and the check engine light being activated.

How often should I replace the oxygen sensor?

It is recommended to replace the oxygen sensor every 100,000 km or as specified by the vehicle manufacturer.

Can I clean the oxygen sensor instead of replacing it?

Cleaning is not generally recommended as it may not restore full functionality; replacement is usually the best option.