General description 100% new and high-quality mass air flow sensor, part number: 3L3A-12B579- (3L3A12B579BA). This sensor is designed to ensure optimal engine performance by accurately measuring the amount of air entering the engine. Technical specifications Part number: 3L3A-12B579- (3L3A12B579BA) Color: Black Material: Plastic Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with various models including: Mercury: Focus (2003-2011), Grand Marquis (2005-2011), Mariner (2005-2011), Milan (2006-2011), Montego (2005-2007), Mountaineer (2004-2010), Sable (2004-2009) Ford: Crown (2004-2011), E-150 (2004-2014), E-250 (2004-2014), E-350 (2004-2015), E-450 (2004-2015), Edge (2007-2014), Escape (2005-2012), Expedition (2005-2011), Explorer (2004-2012), Explorer Sport Trac (2007-2010), F-450 Super Duty (2005-2010), F-550 Super Duty (2005-2010), Fiesta (2011-2013), Five Hundred (2005-2007), Flex (2009-2012), Focus (2003-2011), Freestyle (2005-2007), Fusion