OXYGEN SENSOR 3921025300 39210-25300 FOR Hyundai KIA
High-precision zirconia ceramic sensing element ensures accurate air-fuel ratio measurement for optimal engine performance. Direct-fit OEM replacement with exact plug-and-play compatibility, no modifications required for Hyundai/Kia models. High-grade stainless steel housing resists corrosion from extreme temperatures (-40°C to 900°C) and road chemicals. Advanced laser-welded construction prevents gas leaks, maintaining consistent signal output for 60,000+ miles. Integrated heating element (4-wire design) enables fast cold-start readiness and reduced emissions in city/highway driving. Tested under SAE J1979 standards for flawless integration with ECU systems in Santa Fe, Sportage, Sorento, and Optima. Sealed waterproof connectors with gold-plated terminals ensure stable voltage transmission in rainy/snowy conditions. Factory-calibrated to meet strict OE specifications (0.1-0.9V output range) for instant error-free installation. Bulk purchase available with wholesale pricing—ideal for auto repair shops and fleet maintenance operations.