华泰圣达菲1.8T/550/750后氧传感器0258006918，品质升级之选

Baosteel Santa Fe 1.8T/550/750 rear oxygen sensor, direct replacement for OEM number 0258006918; broad compatibility; no wiring changes required. Function: monitor oxygen content in exhaust and feed ECU to adjust injection quantity, ensuring combustion efficiency. Fits Huatai Santa Fe 1.8T, 550, 750 models; replacement resolves excessive fuel consumption, weak acceleration, and excessive emissions. If the check engine light is on, idle is unstable, or exhaust shows black smoke, sensor aging is indicated; replace to save fuel and maintenance.