Mazda 3 L4-2.0L 2010-2013 Downstream. Mazda 3 L4-2.5L 2010-2011 Downstream. Mazda 3 Sport L4-2.5L 2010 Downstream. Mazda 3 Sport L4-2.0L 2010 Downstream. Mazda 3 Sport L4-2.0L 2012-2013 Downstream. ● High Performance - Oxygen Sensor Features double protection layer, aluminum oxide trap layer, PTFE filter, and stainless steel housing.
