Premium Auto Oxygen O2 Sensor engineered for precise emissions control in Mercedes C/E/S/ML Series. High-grade ceramic sensing element ensures accurate air-fuel ratio monitoring with rapid response time. Direct-fit design matches OEM specifications 16276/0015406017/0258006276 for seamless installation. Durable stainless steel housing resists corrosion in harsh driving conditions. Optimizes engine performance while reducing harmful exhaust emissions. Compatible with urban commuting and highway driving scenarios. Strict quality control guarantees 12-month reliable operation. Bulk order discounts available for fleet managers and auto repair shops.