Compatible with Fuliste Auto Parts Oxygen Sensor Rear ED8A-9G444-GA

Ford Escort 2015-2018 1.5L, with rear oxygen sensor requirements for some platforms. Rear O2 sensor monitors oxygen in exhaust post-catalytic converter, providing feedback to ECU to optimize air-fuel ratio for emissions and economy. OEM ED8A-9G444-GA; factory equivalent ED8A-9G444; cross-check stock or replacement. Replacement difficulty: medium; use dedicated oxygen sensor socket; avoid thread damage.