Mazda3 2008-2010 Oxygen Sensor LFL7-18-8G1 Front/Rear Oxygen Optional, Accurately Matches GS/GT Hatchback

Mazda3 2008-2010 hatchback-specific oxygen sensor LFL7-18-8G1, upstream/downstream oxygen options; differentiate by installation location. Sensor features stainless steel housing with ceramic sensing element, endurance beyond 50,000 km per bench tests, performance comparable to original and more affordable. Monitors exhaust oxygen and feeds ECU to ensure precise air-fuel ratio, preventing fuel economy degradation or MIL. Installation requires dedicated sleeve and anti-seize agent; medium difficulty; ideal OEM replacement.