Product Description
The 1987-1989 model years in this same 16-gallon diesel sending unit family — verify your exact year against FMSU-4DES, -6DES, and -7DES.
Fuel gauges don't usually fail gradually — they're fine, then suddenly wrong, and a bad sending unit is almost always the reason. This one matches the OEM ohm range and mounting pattern so the gauge reads correctly from the first mile, not just close enough to guess by.
Technical Specifications
- Capacity: 16 Gallons
- Fuel Type: Diesel
Fitment
- Ford F-Series (Diesel, Front/Midship/Side) | 1987-1989