Mazda Familia II BMW Engine Oxygen Sensor HB00-18-862M1 Dedicated Fit

Mazda Familia (Mazda 323) generation with BMW N6 engine (1.6L) uses special oxygen sensor (OEM HB00-18-862M1) as direct replacement; no wiring changes needed. Monitors exhaust oxygen content and transmits to ECU to control injection. Replaces high fuel consumption, weak acceleration, and emissions; avoids check engine light. If idle is unstable, exhaust emits black smoke, or fuel consumption rises, replace promptly to revitalize the engine.