Mercedes-Benz C300 Oxygen Sensor 0258017014, universal replacement A0035426918 ensures exhaust emissions meet standards.

Mercedes-Benz C-Class C300 and W204 chassis models with M264/M274 engines; if experiencing rough idle, black smoke from exhaust, or rising fuel consumption, replace oxygen sensor (OEM 0258017014, compatible with A0035426918). This part is highly universal; after installation it works normally. Core function is to monitor exhaust oxygen content and feed back to ECU to adjust air-fuel ratio to meet emissions standards. Effectively resolves high fuel consumption, weak acceleration, and engine warning lights; standard replacement for restoring power and emissions.