Mazda6 2.3 Old Model / Família 1.6 Oxygen Sensor ZH40-18-861A L813-1

Mazda6 2.3L (2003-2008) and Familia 1.6L (2006-2012) can use this oxygen sensor; monitors exhaust oxygen content and feeds ECU to adjust air-fuel ratio; ensures combustion efficiency and emissions compliance. OEM ZH40-18-861A and L813-1; cross-check with factory part ZH40-18; replacement medium; use dedicated oxygen sensor socket and anti-seize; life prolonging lubrication recommended.