BBK has made ongoing improvements to the internals of the fuel pressure regulators over the years. By using this rebuild kit fuel pressure regulator you'll not only have brand new internals, but will be making it like new again. Replaces Worn or Failed Diaphragm in later production BBK Fuel Pressure Regulators 2010 and newer. Easy Installation Using Only Basic Tools Fits later model BBK Fuel Pressure Regulators Part 1706 and Part 1707 ONLY