Mazda6 Front Oxygen Sensor LFH1-18-8G1 LFH1-18-861 Precision Replacement Part

This replacement part matches OEM standards in material and process, using high-temperature ceramic substrate with dual protective tubes to resist heat shocks and corrosive exhaust; lifespan comparable to OE. OEM numbers LFH1-18-8G1 and LFH1-18-861; fits 2006-2013 Mazda6 (including 2.0L and 2.3L gasoline). Function: monitor exhaust oxygen content and feed back to ECU to ensure combustion efficiency and emission standards. Installation difficulty: medium; use specialized socket to remove old sensor; avoid thread galling; cold-start recommended to prevent burns.