NTK NGK Oxygen (O2) Lambda Sensor - NGK 1405 / NTK OZA457-EE3 - 4-Wire - Fits BMW E39 535i 540i M5, E38 735i 740i 750i, E31 840Ci 850Ci, Z8 E52

NTK NGK Oxygen (O2) Lambda Sensor - NGK 1405 / NTK OZA457-EE3 - 4-Wire - Fits BMW E39 535i 540i M5, E38 735i 740i 750i, E31 840Ci 850Ci, Z8 E52

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NTK Lambda Sensor / O2 Sensor NGK 1405 — OZA457-EE3

Restore precise fueling, reliable emissions control and smooth performance with the NTK Lambda Sensor / Oxygen Sensor NGK 1405, part code OZA457-EE3. This 4‑wire NTK O2 sensor is engineered for OE‑level accuracy and durability, making it the ideal direct replacement oxygen sensor for many BMW applications listed below. If you are searching for BMW lambda sensor, BMW O2 sensor, BMW oxygen sensor, NTK lambda sensor, NGK 1405 O2 sensor or OZA457‑EE3, this is the correct part for the vehicles detailed in our compatibility section.

We choose NTK by NGK for their outstanding build quality and signal stability. We have supplied and fitted these sensors for our customers and feedback has been consistently positive, with noticeable improvements in drivability, fuel economy and emissions test results when replacing tired or failed sensors.

Why choose this NTK oxygen sensor

  • OE‑quality NTK lambda sensor for accurate air‑fuel ratio feedback
  • 4‑wire design for stable signal and rapid warm‑up
  • Designed for the BMW models listed in our fitment guide
  • Helps restore fuel economy, throttle response and smooth idle
  • Reduces emissions and helps prevent MOT failures due to a faulty O2 sensor
  • Trusted brand from NGK/NTK, a leading ignition and sensor specialist

Common search terms for this item include BMW lambda sensor E39, BMW M5 O2 sensor, BMW 540i oxygen sensor, BMW 735i O2 sensor, BMW 740i lambda probe, BMW 750i O2 sensor, BMW 8 Series oxygen sensor, BMW Z8 lambda sensor, NGK 1405 oxygen sensor, NTK OZA457‑EE3, upstream O2 sensor, downstream O2 sensor, pre‑cat lambda sensor, post‑cat lambda sensor, BMW V8 oxygen sensor replacement. Always verify position and connector against your vehicle.

Fitting and support

Want it fitted properly first time? We offer professional installation at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com. Not local? No problem — we can advise on selection and compatibility before you order.

Compatibility check before dispatch

To ensure the part you have ordered fits your vehicle, we run a compatibility check prior to dispatch. Provide your registration number for UK vehicles or the last 7 digits of your VIN at checkout and we will confirm the match.

Vehicle compatibility

Please utilise our product recommender to double‑check compatibility. If you need help, contact Sales@nforcd.com.

  • 5 Series
    • 5 Saloon (E39)
      • 535i 3.5 (173 KW / 235 HP) (04/1996 - 03/1999)
      • 535i 3.5 (180 KW / 245 HP) (04/1999 - 06/2003)
      • 540i 4.4 (210 KW / 286 HP) (04/1996 - 06/2003)
      • M5 4.9 (294 KW / 400 HP) (10/1998 - 06/2003)
    • 5 Touring (E39)
      • 540i 4.4 (210 KW / 286 HP) (01/1997 - 05/2004)
  • 7 Series
    • 7 (E38)
      • 735i / iL 3.5 (173 KW / 235 HP) (01/1996 - 12/1998)
      • 740i / iL 4.4 (210 KW / 286 HP) (01/1996 - 11/2001)
      • 750i / iL 5.4 (240 KW / 326 HP) (12/1994 - 11/2001)
  • 8 Series
    • 8 (E31)
      • 840Ci 4.4 (210 KW / 286 HP) (01/1996 - 12/1999)
      • 850Ci 5.4 (240 KW / 326 HP) (09/1994 - 12/1999)
  • Z Series
    • Z8 Roadster (E52)
      • 4.9 (294 KW / 400 HP) (06/2000 - 06/2003)

Technical details

Number of circuits 4
Length 300 mm

Part numbers

  • NGK: 1405
  • NTK: OZA457‑EE3

Replace your failing BMW lambda sensor with confidence. This NTK O2 sensor NGK 1405 OZA457‑EE3 is the go‑to oxygen sensor for the BMW E39, E38, E31 and E52 models listed. For the best results, verify bank and sensor position on your vehicle before ordering. Need assistance or professional fitting in Warwickshire? Email Sales@nforcd.com.