WJIECO 234-4138 Oxygen Sensor 4-Wire Heated O2 Lambda Sensor, OEM OE#89465-60150 89465-50120 89465-60430, Direct Replacement for Lexus LS430 GS430 SC430 GX470 LX470 Toyota Land Cruiser 4Runner 4.3L 4.7L V8, IATF 16949 Certified

Purchase precautions

1. Please purchase according to the original OE and OEM numbers of the vehicle. If you are unable to confirm the specific model, please contact us promptly and we will provide guidance within 24 hours. You can also provide the following information about the vehicle in a timely manner (frame number, model year, displacement, engine code, fuel type) so that we can accurately match the appropriate oxygen sensor for you. Do not purchase directly without confirming the suitability of the model, as incorrect parts may result in inability to install and use.
2. Before installation, please ensure that the engine and exhaust system are cooled down to avoid high temperature burns. When installing, please tighten the threaded interface to prevent exhaust air leakage.
3. After product installation, if there are problems such as check engine lights or abnormal signal readings, please contact us in a timely manner. We will reply within 24 hours and help you troubleshoot and solve the problem.
4. This product is for exclusive use by vehicles. Please do not modify it or use it for non-automotive applications.

   Product Parameters

   1. Product Model and OEM/OE Number: 234-4138, 89465-60150, 89465-50120, 89465-60430
   2. Part Name: Heated Oxygen Sensor / O2 Sensor / Lambda Sensor
   3. Sensor Type: 4-Wire Heated Narrowband Oxygen Sensor (Zirconia)
   4. Output Signal Range: 0.1 V (lean) ~ 0.9 V (rich), switching at λ=1 (0.45 V reference)
   5. Switching Point Accuracy: ±10 mV at λ=1
   6. Response Time (T90): < 100 ms (after reaching operating temperature)
   7. Heater Warm-Up Time: < 20 seconds to reach operating temperature (300℃)
   8. Sensor Element Operating Temperature: 300℃ ~ 800℃ (continuous)
   9. Exhaust Gas Temperature Range: -40℃ ~ +850℃ (peak intermittent)
   10. Heater Supply Voltage: 12V DC (operating range: 10V ~ 16V)
   11. Heater Resistance: 3.0 ~ 5.0 Ω at 25℃
   12. Output Type: Analog voltage output (narrowband, 0–1V)
   13. Mounting Thread: M18 × 1.5
   14. Harness Length: 210 mm (8.27 inches)
   15. Connector Type: 4-pin OEM direct-fit male plug
   16. Part Brand: WJIECO
   17. Part Origin: Made in China
   18. Service Life: ≥ 100,000 km / 60,000 miles

   WJIECO Core advantages of the product

   1. Accurate measurement, meeting strict emission regulations:

   The sensing element delivers a wide linear output range (0.1–0.9V) with precision 5–10 times higher than conventional unheated sensors, and can capture minute changes in air-fuel ratio. The signal error is ≤±0.5% of full scale, with temperature compensation deviation of ±0.2℃, which meets the requirements of Euro 5 and Euro 6 emission regulations and is perfectly adapted to the vehicle’s engine management system and catalytic converter.

   2. Smarter Technology:

   Designed for fit-and-forget convenience with OE-level calibration that adapts seamlessly to your vehicle’s ECU. Faster Response — third-party tests validate OE-level accuracy and responsiveness, ensuring swift and precise air-fuel mixture control. Enhanced Durability — built to withstand harsh exhaust conditions with improved protection against oil, fuel, and water ingress, ensuring long-lasting reliability.

   3. Premium Material and Performance:

   The oxygen sensor housing is made of high-grade stainless steel with excellent corrosion resistance and heat dissipation, ensuring fast response times and long-term stability. The protective sleeve utilizes dual-layer porous ceramic (alumina substrate) with exceptional thermal shock resistance and dimensional stability, which can still provide accurate and reliable signal output even in complex or harsh exhaust environments. Our sensing element is engineered with a brand-new high-purity zirconia ceramic core, delivering precise lambda detection. Designed for exceptional durability.

   4. Effortless Installation:

   Package including the sensor and OEM-style connector. The automotive oxygen sensor is installed directly into the exhaust manifold or catalytic converter bung and can be installed easily and quickly with a single 22mm wrench or oxygen sensor socket. The O2 sensor seamlessly replaces older or faulty sensors while maintaining factory-spec signal output, making it a standard OEM replacement.

   5. Stable compatibility and fault prevention:

   Equipped with high-quality zirconia ceramic chips and waterproof seals, it is waterproof and dustproof, avoiding sensor failure caused by moisture and contamination; Stable signal transmission, eliminating problems such as rough idle, poor fuel economy, hesitation under acceleration, and constant check engine lights caused by oxygen sensor failures.