1990-1991 Ford F-250 F-350 19 Gallon Diesel Fuel Sending Unit - Rear Tank (FMSU-7DER)
description

Part Number: FMSU-7DER (MTS)
This Product is not made in China.
High-quality MTS replacement fuel tank sending unit designed for **1990-1991 Ford F-250 & F-350** trucks equipped with the **19 Gallon Rear Tank** and 7.3L Diesel engine.
Fitment Information
- Ford F-250 – 1990, 1991 (7.3L Diesel)
- Ford F-350 – 1990, 1991 (7.3L Diesel)
- Tank Size: 19 Gallon Rear Tank
- Engine: 7.3L Diesel
- Note: This unit is specifically for the 19 Gallon Rear Tank. Does NOT fit front or side tank models.
Product Features
- Manufactured by MTS
- Correct ohm range for accurate factory gauge performance
- Reliable float arm and sender mechanism
- Includes new gasket (where applicable)
Common Symptoms This Part Fixes
- Fuel gauge stuck on empty or full
- Inaccurate or fluctuating fuel level readings
- Check engine light related to fuel level sensor
Installation Recommendations
- Best replaced together with a new fuel tank
- Replace tank lock ring and gasket at the same time
- Inspect wiring and connector for corrosion
- Professional installation recommended
Why Buy From Gas Tank Depot?
- 15+ years specializing in Ford 7.3L Diesel fuel systems
- Accurate fitment information
- Competitive pricing
- Fast shipping with tracking
- Knowledgeable customer support
Need help confirming fitment? Contact us with your exact year and tank location.







