Buick Encore 1.4T Front Oxygen Sensor 55563348 Direct Replacement for Original Part

This replacement uses an OEM-consistent zirconia ceramic sensing element and high-temperature stainless steel housing; material and welding process meet OEM standards; durability comparable to original parts in testing. OEM number 55563348; directly corresponds to Opel Astra 1.4T models. Function: monitor exhaust oxygen content and feed ECU to adjust air-fuel ratio; ensure combustion efficiency and emissions compliance. Replacement difficulty: medium; remove front exhaust pipe section; perform cold-start operation and apply anti-seize; a technician with basic tools can complete within half an hour.