Replacement Front Oxygen Sensor for Hyundai and Kia 39210-04000 3921004000 Direct Fit
Refresh your Hyundai or Kia with a trusted Front Oxygen Sensor designed to keep your engine running clean and efficient. This OEM-grade sensor from WEIDA AUTO PARTS matches the Hyundai/Kia specification 39210-04000 (also listed as 3921004000), delivering accurate oxygen readings that let your ECU fine-tune the air-fuel mix in real time. The front-position sensor features a 4-wire heated design for rapid warm-up and stable performance across driving conditions, helping reduce emissions, improve fuel economy, and maintain smooth idle and power delivery. Built to exact OEM tolerances, it’s a reliable replacement that restores factory-like responsiveness without compromise.
Main Description
Key characteristics include a 4-wire heated configuration, a piezoelectric sensing element, and compatibility with Hyundai and Kia vehicles that use OEM part 39210-04000. The sensor’s repeatable performance aligns with OEM expectations (3921004000), ensuring consistent readings and durable operation. Originating from Mainland China, this WEIDA part is crafted to withstand the heat and vibration of exhaust systems while delivering precise data to your vehicle’s engine management system.
Benefits & Tips
- Improved cold-start performance: The built-in heater reduces warm-up time, helping the ECU reach optimal operating conditions faster and lowering initial emissions.
- Enhanced fuel efficiency and lower emissions: Accurate O2 readings support precise air-fuel balancing, contributing to steadier acceleration and better MPG.
- Reliable replacement: Matching OEM numbers (39210-04000 / 3921004000) ensures straightforward installation and dependable performance in Hyundai/Kia applications.
Product Specifications
- Brand Name: WEIDA AUTO PARTS
- OEM No.: 39210-04000
- Measuring Range: For Hyundai/Kia
- Sensor Type: Piezoelectric
- Type: Heating
- Linear: 4 Wire
- Origin: Mainland China
- Repeatability: 3921004000
- Hysteresis: 39210-04000
- Resolution: Oxygen Sensor
- Choice: Yes
Package includes:
- 1 x Front Oxygen Sensor compatible with Hyundai/Kia OEM 39210-04000 (3921004000)
Warnings / Reminders
- Ensure vehicle compatibility by confirming the OEM number 39210-04000 matches your vehicle’s requirements before installation.
- Follow proper installation procedures: allow the exhaust system to cool, disconnect the battery, handle the sensor carefully, and torque to the manufacturer’s specification.
- Replace the sensor with vehicle-specific guidelines in mind; if your vehicle requires sensor pair replacement, consider replacing both sides to avoid uneven readings.
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