Premium OEM-grade Air Fuel Ratio Oxygen Sensor for Toyota Corolla Altis. Precision-engineered with zirconia ceramic sensing element and platinum electrodes for ultra-accurate AFR measurements. Direct-fit replacement for OE part 89467-12100 with identical 4-wire configuration. Features military-grade stainless steel housing with anti-corrosion treatment. Seamless compatibility with 3ZZ/1ZZ engines – no ECU reprogramming required. Includes factory-style waterproof connector and pre-installed anti-seize lubricant. Optimizes fuel efficiency while reducing harmful emissions. Meets strict ISO 9001 manufacturing standards. Ideal for emissions testing compliance and performance tuning applications. Ships in protective anti-static packaging with installation guide.