Coarse Thread C4 Band Adjustment Sealing Nut Mustang 65-73/ Bronco 66-77

The band adjustment screw on a C4 automatic passes through the case, and the stop nut both locks the adjustment and seals the opening against fluid seepage. Reusing an old nut after a band adjustment can leave a slow leak at the case. Consider getting a new nut for the utmost security.

This replacement nut uses the coarse thread pitch and matches factory part number 388307-S100. It is also compatible with C3, A4LD, 4R44E, 4R55E, 5R55N, 5R55S, and 5R55W transmissions.

Features and Benefits:
- Locks and seals the band adjustment screw
- Coarse thread pitch
- Replaces factory part number 388307-S100
- Also compatible with C3, A4LD, 4R44E, 4R55E, 5R55N, 5R55S, and 5R55W transmissions

Vehicle Fitment:
- 1965-1973 Ford Mustang
- 1966-1977 Ford Bronco
- 1967-1973 Ford Cougar
- 1968-1971 Ford Torino
- 1964-1970 Ford Fairlane
- 1960-1970 Ford Falcon
- Designed for models with a C4 automatic transmission