Is your Ford Focus, Transit Connect, or Mazda 3, 5, or 6 (with the 4F27E or FN4A-EL 4-speed automatic transmission) acting up? A clogged filter or worn solenoid might be the issue. This kit includes a replacement shift solenoid filter and the necessary gaskets for a transmission service. It's made from quality materials for durability. Compatibility is key – it fits specific model years of Ford Focus (2000-2014), Transit Connect (2010-2013), and various Mazdas from 1999-2010. Always double-check your vehicle's exact year, model, and transmission code (4F27E) before ordering. This is a professional-level part for a transmission fluid service or solenoid replacement. A good way to maintain or repair your transmission's shifting performance.