Description
A properly sealed differential keeps contamination out and performance flowing—this 4.25in closed derby cap delivers the protection your drivetrain deserves. Whether you’re running stock or upgraded internals, a quality cap prevents fluid loss and maintains bearing integrity under sustained load. Chrome-plated steel construction resists corrosion while the closed design ensures a reliable seal for street or track use.
- 4.250 in OD
- 4.20 in tall
- Closed end design
- Steel construction
- Chrome plated
- Universal fitment
- Bolt-on installation
- Sold individually







