NTK/NGK Lambda O2 Sensor 5707 (OZA660-EE14) for BMW 5 Series E34 520i 525i 1989-1997 - OEM Oxygen Sensor Upstream/Downstream

NTK Lambda Sensor / O2 Sensor NGK 5707 - OZA660-EE14

Upgrade or replace your oxygen sensor with the NTK Lambda Sensor, NGK 5707, also known as NTK OZA660-EE14. This OE-quality NTK O2 sensor restores precise air fuel ratio control, improves drivability, helps reduce emissions and fuel consumption, and can resolve check engine light faults related to a tired or failed lambda probe. Perfect for BMW 5 Series E34 520i and 525i applications listed below, this NTK oxygen sensor delivers the accuracy, durability, and reliability enthusiasts expect from NGK and NTK.

Why choose this NTK oxygen sensor

• OE-quality NTK lambda sensor for accurate air fuel ratio feedback
• Direct replacement O2 sensor with the correct connector for listed applications
• Helps restore performance, smooth idle, throttle response and fuel economy
• Built to withstand heat, vibration and contamination for long service life
• Ideal solution for failed or slow sensors that trigger fault codes or MOT-emissions concerns

We fit and use NTK sensors ourselves, and our customers consistently report excellent results. If your BMW E34 is running rich or lean, has rough idle, poor MPG, or an emissions-related warning light, a fresh NTK lambda sensor is a proven fix.

Compatibility

Please use our product recommender to double check suitability. You can also contact us at Sales@nforcd.com for assistance.

Note: Sensor position can vary by model year and engine. Some vehicles use more than one lambda sensor. Please verify pre-cat or post-cat position before ordering if applicable.

Compatibility check before dispatch

For peace of mind, we will verify fitment before shipping. Provide your UK registration number or the last 7 digits of your VIN at checkout and we will confirm the correct oxygen sensor for your car.

Professional fitting

Want it supplied and fitted by specialists? Nforcd offers installation at our Warwickshire facility. Request a quote at Sales@nforcd.com.

Part numbers

• NGK: 5707
• NTK: OZA660-EE14

Common search terms

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