Mopar M-Body Fuel Tanks (1977-1989)
Gas Tank Depot offers high-quality replacement fuel tanks for Mopar M-Body vehicles. This rear-wheel-drive platform was used for police, taxi, and luxury sedans during the 1980s.
M-Body Models We Cover
- Dodge Diplomat
- Plymouth Gran Fury
- Chrysler Fifth Avenue, Newport, LeBaron (sedan)
- All years 1977-1989
M-Body Fuel Tank Buying Guide
Steel Tanks for M-Body Sedans
Most M-Body tanks were steel. Our galvanized replacements provide excellent rust protection while maintaining correct dimensions for these full-size RWD cars.
Common Problems
- Rust and pinhole leaks on steel tanks
- Leaking seams and deteriorated gaskets
- Worn tank straps under heavy vehicle weight
Related M-Body Parts
Need help finding the right M-Body fuel tank? Tell us your exact year and model (Diplomat, Gran Fury, Fifth Avenue, etc.). We’ll recommend the correct direct-fit replacement.
