After years of use your fuel sending unit can wear out or stop working entirely. When that happens it can cause your fuel gauge not to work or even send incorrect readings to the fuel gauge. Ensure that you always know how much fuel you actually have by replacing your worn out original with this quality reproduction fuel sending unit. Designed and manufactured to exact factory specifications this fuel sending unit will replace the original in both fit and function. Comes with fuel sender filter screen gasket and float. This 5/16 stainless steel sending unit will ensure your fuel gauge works properly provided the gauge and wiring are in good working order.Ford Vehicle Fitment:1983-86 Ford Mustangs with a 2.3L EFI Engine1984-86 Ford Mustangs with a 3.